JP4859762B2 - Bamboo fiber manufacturing method and manufacturing apparatus - Google Patents

Description

  The present invention relates to a bamboo fiber manufacturing method and a manufacturing apparatus for manufacturing a bamboo fiber having a uniform length at room temperature and normal pressure.

  Bamboo fiber is an environmentally friendly fiber that is attracting attention as a car interior, building material, and reinforcing material because it is a natural product and has excellent stickiness and strength. Bamboo fiber is not usually used alone, but is mixed with a material such as plastic fiber. When long bamboo fiber is used, a product with excellent bending strength can be obtained. On the other hand, when short bamboo fibers are used, the density of the fibers can be increased, and it can be used as a product that can secure screws, nails and the like. In addition, if the fibers are thin, the density increases, which leads to an improvement in the strength of the product. Further, if the bamboo fibers are in the form of ridges, they are well entangled with the mixed material and the degree of bonding is increased, so that a stronger product is obtained. be able to. As described above, bamboo fibers having a uniform length, a constant fineness, and a both-sided shape are demanded in accordance with the use of various products.

  As methods for obtaining bamboo fibers, there are mainly known methods for fiberizing by applying high-temperature and high-pressure energy (for example, Patent Document 1) or methods for fiberizing using a defibrating machine (for example, Patent Documents 2 to 4). ing.

  In patent document 1, the bamboo material which was made into the heat pressurization state of 140 degreeC-200 degreeC is made into a non-pressurization state instantaneously, the bamboo material is crushed into a fiber form, and the bamboo fiber is obtained.

  Patent document 2 prepares bamboo cut to a predetermined length, passes the bamboo through a rolling device, coarsely crushes, then defibrates with a lapping machine, further refines with a turbo mill, and has an average length of 25 cm, Bamboo fibers with an average diameter of less than 0.4 mm are obtained.

  In Patent Document 3, a fiber is loosened while crushing a bamboo piece with a feed roller, and then the vertical direction and the horizontal direction are cut with a cutting blade roller. This is fed from the side of the defibrator and defibrated between the impeller of the inner cylinder of the defibrator and the defibrated groove of the outer cylinder. When the fiber diameter becomes smaller than the slit provided in the outer cylinder, bamboo fibers are discharged from the slit. The bamboo fiber of a certain thickness is obtained.

In Patent Document 4, bamboo pieces are repeatedly passed through a rubber roller to crush and shear the bamboo pieces, and then the bamboo fibers and fine powder are separated by a sieve to obtain bamboo fibers.
JP 2003-253011 A JP-A-5-138617 JP 2000-71209 A JP-A-4-307203

  In patent document 1, there exists a problem that it must process at high temperature and pressure, and cannot be fiberized unless high energy is given.

  In addition, because of the explosion, bamboo fibers having a desired length and fineness cannot be obtained.

  Furthermore, bamboo is processed under a high temperature and high pressure of 140 ° C. to 200 ° C., but lignin, which is a constituent of bamboo, undergoes a chemical reaction when heat exceeding 85 ° C. is applied, and gas such as formaldehyde is generated. For this reason, the obtained bamboo fiber generates formaldehyde, which is not environmentally preferable.

  In Patent Document 2, bamboo is defibrated with a lapping machine and is made into fine fibers with a turbo mill, and there is no step of adjusting the length of the bamboo fibers. There is a problem that the bamboo fiber cannot be obtained.

  In addition, the stamping type rolling is performed, and the bamboo fiber is easily damaged by the rolling, and the strength of the bamboo fiber itself is weakened.

  In Patent Document 3, a bamboo piece is cut with a cutting blade to adjust the length of the fiber. For this reason, since both ends of the fiber have a sharp cross-section, when mixed into a material such as plastic fiber, it is difficult to get entangled with the material and bonding is weak. For this reason, there exists a subject that the bamboo fiber which can be used for the building material etc. with which intensity | strength is calculated | required cannot be obtained.

  In Patent Document 4, the bamboo pieces are passed through the roller many times and the bamboo fibers are obtained by crushing. Therefore, the lengths of the fibers are non-uniform, and it is not possible to obtain fibers in a predetermined range.

  For the same reason, the fiber thickness is also non-uniform, and a fiber having a desired thickness cannot be obtained.

  Thus, the method and apparatus which can manufacture in large quantities continuously the bamboo fiber which arranged in the length of a certain range at normal temperature and normal pressure are not implement | achieved at present.

  The present invention includes a step of forming bamboo pieces in which bamboo fibers extend in the length direction and the bamboo fibers and meat are integrated, and the bamboo pieces are pressed at predetermined intervals, and the bamboo fibers are pressed. A step of stretching and weakening the bamboo piece, and a step of dividing the bamboo piece at a portion where the bamboo fiber is stretched while being defibrated.

  Further, the present invention is characterized in that the bamboo fiber side of the bamboo piece is pressed to extend the bamboo fiber to the meat quality side.

  Furthermore, the present invention is characterized in that before the bamboo piece is defibrated, the bond between the bamboo fiber and the meat is weakened while applying vibration to the bamboo piece.

  Furthermore, the present invention is characterized in that the length of the bamboo fiber after defibration is not more than the predetermined interval.

  Furthermore, the present invention includes a pressing roller having convex portions provided on the surface at predetermined intervals, and the bamboo fibers are pressed at the predetermined intervals by pressing the convex portions while passing through the conveying table with the fiber side of the bamboo pieces facing upward. A pressing device that partially extends at the position, a fiber separation roller provided on the transport table, and a vibration supply device that transmits vibration to the transport table, the fiber side of the bamboo piece facing upward on the transport table A fiber separating device that transmits vibration from the bamboo fiber side of the bamboo piece to weaken the bond between the bamboo fiber and the meat using the weight of the fiber separation roller to the bamboo piece, And a defibrating device for taking out the bamboo fiber by tearing the bamboo fiber at the predetermined interval with a defibrating drum having a large number of blades on the surface.

  Furthermore, the present invention is characterized in that a vibration supply device is also provided in the conveying table of the pressing device, and the bamboo fiber is partially stretched by applying vibration to the bamboo piece from the time of pressing by the pressing roller.

  Furthermore, the present invention is characterized in that the fiber separation roller is movable in the vertical direction so that the bamboo piece is constantly vibrated from the fiber side even if the thickness of the bamboo piece changes.

  Furthermore, the present invention is characterized in that a large number of blades of the defibrating drum are slightly offset in the rotational direction, and the bamboo fibers are sandwiched between the blades and then torn.

  Furthermore, the present invention is characterized in that the defibrating drum is made of wood.

  According to the present invention, the bamboo pieces are pressed at a predetermined interval, the bamboo fibers are stretched at the pressed portions, and the bamboo fibers are naturally divided at the portions at the time of defibration. It is possible to mass-produce bamboo fibers with a length equal to or less than the interval.

  In addition, according to the present invention, bamboo fiber can be produced at room temperature and normal pressure, so high temperature and high pressure energy is unnecessary, and bamboo fiber can be mass-produced with energy saving.

  Furthermore, according to the present invention, bamboo fiber can be produced at room temperature and normal pressure without applying heat exceeding 85 ° C., so that lignin, which is a constituent component of bamboo, does not cause a chemical reaction. For this reason, there exists an advantage which can obtain the bamboo fiber which generation | occurrence | production of noxious gases, such as formaldehyde, is equivalent to a natural material.

  Furthermore, according to the present invention, the bamboo fiber is pressed from the side of the bamboo fiber to compress and dent, and the bamboo fiber is extended to the meat side. The fiber can be stretched.

  Furthermore, according to the present invention, if the bond between bamboo fiber and meat is weakened in advance, there is an advantage that defibration at normal temperature and normal pressure can be easily performed.

  Furthermore, according to the present invention, since the bamboo fiber is divided at the stretched portion, both ends of the divided bamboo fiber are separated so as to be torn off to form a saddle shape. Moreover, since the whole bamboo fiber is also stretched by pressing and can be vibrated, the whole bamboo fiber also has a wrinkle shape. For this reason, when mixed in plastic fibers or the like, the bamboo fibers or other fibers are entangled well, and a resin material or the like having excellent strength can be manufactured.

  According to the manufacturing apparatus of the present invention, when the pressing roller for extending the bamboo fiber, the fiber separating roller for weakening the bond between the bamboo fiber and the meat, and the defibrating drum are continuously arranged, the bamboo fibers having the same length are continuously arranged. There is an advantage that it can be manufactured in large quantities.

  Moreover, according to the manufacturing apparatus of this invention, there exists an advantage which can also change the length of the bamboo fiber which can be taken by changing the space | interval of the convex part of a press roller.

  Furthermore, according to the manufacturing apparatus of the present invention, since the vibration from the vibration supply device is applied from above the bamboo piece using the weight of the fiber separation roller, even if the thickness of the bamboo piece varies, a constant vibration can be obtained. Can be given to bamboo pieces. And this vibration is efficiently transmitted to the bamboo fiber gathered on the skin side of the bamboo piece, and the bond between the bamboo fiber and the flesh can be weakened.

  Furthermore, by offsetting the blade of the defibration drum in the rotation direction, the bamboo fiber is sandwiched between the blades and taken out, so the bamboo fiber is surely torn off at the pressed location and a large amount of bamboo fiber of uniform length is obtained. Can be manufactured.

  Furthermore, according to the manufacturing apparatus of the present invention, the surface of the defibrating roller is made of wood, and the impact received by the blade during defibration can be absorbed by the wooden portion, and the blade is not easily chipped. For this reason, a blade with a thin wall thickness can be used, and the fineness of the meat filling the space between the bamboo fibers can be scraped off to produce a bamboo fiber having a small diameter of 100 to 500 μm.

  With reference to FIGS. 1-4, the manufacturing method of the bamboo fiber of this invention is demonstrated.

  As shown in the process diagram of FIG. 1, the first form of the method for producing bamboo fiber of the present invention is mainly a step of forming bamboo pieces, a step of extending bamboo fibers in the bamboo pieces at predetermined intervals, and bamboo pieces. It consists of the process of defibrating.

  First, the process of forming bamboo pieces will be described.

  As shown in FIG. 2A, bamboo has a circular cross section and a hollow structure inside. And pipes 12, such as a conduit for transporting water and inorganic substances from the rhizome, and a mentor pipe for transporting nutrients obtained by photosynthesis, are scattered irregularly. This tube 12 is used as bamboo fiber. And the meat quality 13 is packed so that the space between these pipes 12 may be filled. The tube 12 is densely present in the bamboo skin 14 side, mainly in the range of 2/3 of the thickness direction from the skin 14 side, is not so much present on the inner skin 15 side, and the meat quality 13 occupies most. .

  First, the branches and leaves are removed from the harvested bamboo and cut in the direction perpendicular to the extension direction. The cut bamboo is divided in the radial direction, and the protrusions of the divided bamboo nodes are removed to form a bamboo piece 11 shown in FIG. As a result, bamboo fiber extends in the length direction of the bamboo piece 11. Further, the bamboo strip inner and outer skins may be removed for use. The length and width of the bamboo piece 11 may be cut and divided so that the length and width are easy to handle.

  The type of bamboo to be used is not particularly limited, but bamboo with a high fiber content, such as citake, is preferable. When civic bamboo is used, the length of the bamboo piece is 1 to 2 m, the width of the bamboo piece is about 30 mm, and the thickness is about 4 to 6 mm.

  Next, the process of extending the bamboo fiber 12 in the bamboo piece 11 at a predetermined interval will be described.

  FIG. 3 is a schematic view of the side surface of the bamboo piece 11 in the process of stretching the bamboo fiber 12, but as shown in the figure, it is pressed as shown by the arrow from the skin side of the bamboo piece 11, that is, from the bamboo fiber 12 side at predetermined intervals. To do. Since the meat quality 13 side is fixed by a hard base or the like, the meat quality 13 at the pressed location is compressed and recessed. Bamboo fibers 12 extend toward the meat 13 side along the dent and can be weakened.

  This step is one of the features that characterize the present application. By pressing the bamboo piece 11 from the bamboo fiber 12 side with a pressing roller provided with a projection, the meat 13 is substantially crushed and only the thickness of the bamboo piece 11 is obtained. The bamboo fiber 12 is mechanically stretched. Further, by making the height of the protrusion constant, the length of the bamboo fiber 12 that is extended becomes constant, and the weakness of the bamboo fiber 12 at the pressed portion can be made constant.

  Moreover, in this process, the length of the bamboo fiber 12 which can be taken by selecting the space | interval of a processus | protrusion can be selected. Although the length of the bamboo fiber 12 is selected depending on its use, it is often selected in the range of 10 to 120 mm.

  Further, in the defibrating process, the bamboo pieces 11 are defibrated and the bamboo fibers 12 are taken out. Since the strength of the bamboo fiber 12 is weakened at the pressed portion in the previous step, it is cut naturally during defibration. Since the length of the bamboo fiber 12 to be obtained can be selected by appropriately setting the predetermined interval between the pressed portions of the bamboo fiber 12, the bamboo fiber 12 having a required length can be selectively produced in large quantities.

  For defibration, a defibrator in which a number of blades, wires and the like are provided on the surface of the defibrating drum described later may be used. The meat quality 13 of the bamboo piece 11 is scraped off by a blade, a wire, etc., and the bamboo fiber 12 appears. Part of the bamboo fiber 12 is sandwiched between the blades or the wires, and is pulled by the rotation of the defibrating drum. By this tensile stress, the bamboo fiber 12 is naturally divided at the pressed portion. Since the bamboo fiber 12 is mechanically pulled by a defibrator and cut into pieces, the cut surface is stretched and cut into pieces.

  FIG. 4 is a side view for explaining the state of the defibrating process of the bamboo fiber 12, FIG. 4 (A) shows the state in which the bamboo fiber 12 is elongated at the time of defibrating, and FIG. The state of each divided bamboo fiber 12 is shown.

  In FIG. 4 (A), the bamboo fiber 12 is pulled at the time of defibration, and receives a tensile stress from both as shown by the arrow in the pressed part. Since the bamboo fiber 12 is thin and weak at the place where the bamboo fiber 12 is pressed, it is naturally divided by the tensile stress.

  In FIG. 4 (B), each bamboo fiber 12 in a state where both ends are raised can be manufactured because it is mechanically divided so as to be torn off by a defibrating device at the pressed location.

  Then, with reference to FIG. 5, FIG. 6, the 2nd form of the manufacturing method of the bamboo fiber of this invention is demonstrated.

  As shown in the process diagram of FIG. 5, the second embodiment mainly includes a step of forming a bamboo piece, a step of extending bamboo fibers in the bamboo piece at a predetermined interval, and the bamboo fiber and meat quality in the bamboo piece. It consists of the process of weakening the bond and the process of defibrating bamboo pieces. The step of weakening the bond between bamboo fibers in the bamboo pieces and meat quality is added to the first embodiment of the present invention described above.

  Since the step of forming the bamboo pieces, the step of extending the bamboo fibers in the bamboo pieces at a predetermined interval, and the step of defibrating the bamboo pieces are the same as in the first embodiment described above, description thereof is omitted here.

  The process of weakening the bond between bamboo fiber and meat will be described.

  In the bamboo piece 11, the meat quality 13 is bonded and attached to the bamboo fiber 12, so that the bamboo fiber 12 and the meat quality 13 cannot be efficiently separated by the defibrating machine in the next defibrating process. Bamboo fiber 12 in a state in which meat quality 13 is bonded to is formed. In order to prevent this, this process is inserted in advance to weaken the bond between the bamboo fiber 12 and the meat 13 before the defibrating process.

  In this step, the bamboo piece 11 is vibrated to weaken the bond between the bamboo fiber 12 and the meat quality 13. As apparent from FIG. 2, the bamboo fiber 12 is on the skin side of the bamboo piece 11, and the meat quality 13 is on the opposite side, so that vibration is applied from the skin side of the bamboo piece 11 and the bamboo fiber 12 and the meat quality 13 are A method of weakening the bond is desirable. A specific method will be described in detail in a manufacturing apparatus described later.

  FIG. 6A is a schematic diagram showing a state in which the bond between the bamboo fiber 12 and the meat 13 in the bamboo piece 11 is weakened. In this figure, the bond between the bamboo fiber 12 and the meat quality 13 is weakened by vibration, and the bamboo fiber 12 and the meat quality 13 are separated with a gap. Therefore, in the next defibrating step, defibration can be easily performed and the thin bamboo fiber 12 can be taken out.

  FIG. 6B is a schematic diagram showing the state of the bamboo fiber 12 after defibration. In this step, the bamboo fiber 12 itself can be brought into a state where the entire surface is raised by vibration. Thereby, the entanglement between the bamboo fibers 12 can be improved.

  The bamboo fiber manufacturing apparatus of the present invention will be described with reference to FIGS. 7 is a side view showing an outline of the bamboo fiber manufacturing apparatus of the present invention, FIG. 8 is an enlarged view of the surface of the pressure roller according to the present invention, and FIG. 9 shows a state in which the bamboo fiber of the present invention is stretched. FIG. 10 is an enlarged view of the surface of the defibrating roller of the present invention. FIG. 11 is a plan view showing the arrangement state of the blades of the defibrating drum of the present invention, and FIG. 12 is a state diagram of defibrating bamboo pieces with the defibrating drum of the present invention.

  As shown in FIG. 7, the manufacturing apparatus 1 includes a pressing device 2, a fiber separation device 3, and a defibrating device 4.

  The pressing device 2 includes a feed roller 21, a pressing roller 22, a transport table 23, and a vibration supply device 24.

  Bamboo pieces are fed into the pressing roller 22 as indicated by arrows on the conveying table 23 by the feed roller 21 with the fiber side facing upward. Protrusions are formed on the pressing roller 22 at predetermined intervals, and the bamboo pieces to be fed are pressed by the protrusions at the predetermined intervals, and stretched at the locations where the bamboo fibers are partially pressed. Therefore, the space between the pressing roller 22 and the transport table 23 is separated by about 5 mm, which is thinner than the thickness of the bamboo piece.

  FIG. 8 shows an enlarged view of the pressing roller 22. On the surface of the pressing roller 22, projections 25 having a semispherical cross section are formed at a desired interval in a direction perpendicular to the feeding direction of the bamboo pieces. As the pressure roller 22 is rotated, the bamboo fiber is crushed by the protrusions 25 so that the bamboo fibers inside the bamboo piece are partially stretched and weakened.

  Since the protrusion 25 has a function of crushing the bamboo piece and extending the bamboo fiber inside, it is preferable to use a metal such as iron. In this embodiment, the space | interval of the processus | protrusion 25 is 60 mm, and in this case, about 60 mm or less bamboo fiber can be taken. By changing the interval of the protrusions 25, bamboo fibers having a length equal to or shorter than the interval can be manufactured. Moreover, the thickness of the protrusion 25 is set to such a thickness that the bamboo flakes can be weakened by compressing the flesh inside the bamboo pieces. In the present embodiment, considering that the thickness of the bamboo piece used is about 4 to 6 mm, the thickness of the protrusion 25 is 3 mm. By changing the thickness of the protrusion 25, the degree of elongation of the bamboo fiber can be selected, and the degree of weakening of the bamboo fiber can be selected.

  The conveying table 23 is a metal table provided with a groove slightly wider than the width of the bamboo piece so that the bamboo piece can be conveyed, and the bamboo piece is continuously flowed through the groove with the skin side up.

  The vibration supply device 24 is provided in the lower part of the transport table 23 and transmits vibrations to the transport table 23 to be transmitted to the bamboo pieces to be transported. This vibration is used to weaken the bond between the bamboo fiber and the flesh of the bamboo pieces and facilitate defibration. The vibration supply device 24 is the same as the vibration supply devices 35 and 36 described later, and the supplied vibration frequency is 5 to 15 Hz. When the frequency is less than 5 Hz, it is insufficient to weaken the bond between the bamboo fiber and the meat, and the subsequent defibration cannot be facilitated. If the frequency is higher than 15 Hz, the bond between the bamboo fibers and the meat quality is too weak, and the blade 45 of the defibrating device 4 gets into the bamboo pieces, and the meat quality is gradually scraped and thin bamboo fibers cannot be taken out.

  FIG. 9 schematically shows a state in which the bamboo piece 11 is pressed by the protrusion 25 to extend the fiber. The bamboo piece 11 is passed through the pressing device 2 with the skin side facing upward. As shown in FIG. 2, since bamboo fibers 12 are present on the skin side of the bamboo, the flesh 13 is crushed by pressing the projections 25 from the skin side, and the bamboo fibers 12 are pushed into the depressions and the bamboo The fiber 12 is stretched.

  The fiber separation device 3 includes a feed roller 31, fiber separation rollers 32 and 33, a conveyance table 34, and vibration supply devices 35 and 36.

  The feed roller 31 sends the bamboo pieces that have passed through the pressing device 2 to the conveying table 34 and sends the bamboo pieces to the fiber separation rollers 32 and 33 with the skin side facing upward.

  The fiber separation rollers 32 and 33 are in contact with the upper surface of the bamboo piece on the carriage 34 and transmit vibration from the upper surface of the bamboo piece by its own weight.

  The vibration supply devices 35 and 36 are installed in the lower part of the conveyance table 34, and transmit vibrations from the vibration supply devices 35 and 36 to the bamboo pieces via the conveyance table 34. Further, since the bamboo pieces are conveyed with the skin side facing upward, they are pressed from the upper surface by the fiber separation rollers 32 and 33. For this reason, since vibration is transmitted also to the upper surface side of a bamboo piece by the dead weight of the fiber separation rollers 32 and 33, the coupling | bonding of the bamboo fiber in a bamboo piece and meat quality can be weakened efficiently from the bamboo fiber side.

  The frequency supplied from the vibration supply devices 35 and 36 is 5 to 15 Hz. When the frequency is less than 5 Hz, it is insufficient to weaken the bond between the bamboo fiber and the meat, and the subsequent defibration cannot be facilitated. If the frequency is higher than 15 Hz, the bond between the bamboo fibers and the meat quality is too weak, and the blade 45 of the defibrating device 4 gets into the bamboo pieces, and the meat quality is gradually scraped and thin bamboo fibers cannot be taken out.

  In this embodiment, the weight of the fiber separation roller 32 is about 30 kg, and the weight of the fiber separation roller 33 is about 40 kg. The vibration is transmitted by the lighter first fiber separation roller 32 to weaken the bond between the bamboo fiber and the meat quality in the range of half the thickness from the bamboo fiber side. Next, the heavier second fiber separation roller 33 weakens the bond between bamboo fibers and meat quality in the remaining half thickness range. In this way, by changing the weight in two stages, it is possible to achieve a constant weakening of the bond between the bamboo fibers in the bamboo pieces and the meat quality.

  Further, since the fiber separation rollers 32 and 33 are mounted so as to be movable in the vertical direction, even if the thickness of the bamboo pieces to be conveyed varies, a constant weight can always be added to the upper surface of the bamboo pieces. A certain level of vibration is applied to all the bamboo fibers and flesh inside, making it easy to defibrate.

  The defibrating device 4 includes a feed roller 41, a defibrating drum 42, and a transport table 43.

  The feed roller 41 sends bamboo pieces sent from the transport stage 34 in the previous process to the transport stage 43 and sends them to the defibrating drum 42.

  The defibrating drum 42 is provided with a large number of blades 45 on the surface thereof, and the bamboo pieces are taken out while scraping the bamboo pieces in the longitudinal direction to scrape the meat quality.

  In addition, as described above, the bamboo piece is naturally cut at this location because the strength of the bamboo fiber is weakened at the location pressed by the pressing device 2. For this reason, bamboo fibers having a predetermined interval or less are continuously obtained, and both ends of the bamboo fibers are in a wrinkle shape.

  FIG. 10 shows an enlarged view of the main part of the defibrating drum 42. In the present embodiment, a large number of blades 45 having a height of 8 mm are provided on the surface of the defibrating drum 42, and the bamboo pieces are defibrated by the blades 45.

  In the present embodiment, the surface of the defibrating drum 42 is wood 46. Since the wood 46 absorbs an impact at the time of defibration, the blade 45 is prevented from being broken or broken. The knot portion of the bamboo piece is hard, and if this portion is shaved with a thin blade 45, the blade 45 is bent and damaged, but the surface of the defibrating drum 42 is made of wood 46. The timber 46 at the base portion is deformed to reduce the impact. For this reason, the thin blade 45 can be used. If the thin blade 45 is used, the meat quality between the bamboo fibers can be finely scraped off, and the thin bamboo fibers can be taken out.

  FIG. 11 is a plan view of the main part of the defibrating drum 42. The broken line indicates the axis of the defibrating drum 42, and when the bamboo piece is fed from the lower side of the figure, it rotates around the axis as shown by the arrow. Blades 45 are arranged at intervals of 2 to 3 mm in the axial direction of the defibrating drum 42, and are slightly offset in the rotational direction of the defibrating drum 42. Since the blade 45 is offset and disposed, the blade 45 in contact with the bamboo piece with a width of 2 to 3 mm gradually shifts, and the meat quality is gradually scraped off. In this embodiment, since the bamboo piece is about 30 mm wide, while the defibrating drum 42 is rotating, about 10 to 15 blades 45 are constantly in contact with each other to scrape off the flesh, and the gap between about 30 mm width is removed without gaps. It is delicate.

  Bamboo fibers appear by gradually shaving the flesh. The bamboo fiber is sandwiched between the offset blades 45 and pulled. The pulled bamboo fiber is naturally shredded at this location because the strength of the pressed location is weakened. In this way, the bamboo fibers are naturally cut off at the pressed points, so that the bamboo fibers having the same length can be continuously taken out.

  In addition, since the pressed portion is mechanically shredded, the cut surface of the bamboo fiber is stretched and shredded.

  If a thin blade 45 is used, and the defibration drum 42 having the blades 45 installed with the axial distance of the defibration drum 42 narrowed is used, thinner bamboo fibers can be taken out. In the present embodiment, a thin blade 45 is used, and the defibration drum 42 is arranged with an axial interval of 2 to 3 mm to obtain bamboo fibers having a small diameter of 100 μm to 500 μm.

  If the thin blade 45 is used and the defibration drum 42 is arranged with a narrower interval in the axial direction, the flesh that fills the space between the bamboo fibers can also be finely scraped into thin bamboo fibers. Then, only thin bamboo fibers are sandwiched between the offset blades 45, and the bamboo fibers pulled by the rotation of the defibrating drum 42 are shredded at the pressed points. In this way, thinner bamboo fibers can be taken out.

  Furthermore, the defibration of the bamboo pieces will be described in detail with reference to FIG.

  FIG. 12A shows a state in which bamboo pieces are fed into the defibrating drum 42. The defibrating drum 42 rotates counterclockwise in the figure and gradually scrapes from the top of the bamboo piece.

  FIG. 12B shows a state where the bamboo piece 11 is being shaved. Since the blade 45 is arranged offset in the rotational direction of the defibrating drum 42, the flesh 13 of the bamboo piece is evenly shaved off and the bamboo fiber 12 appears.

  FIG. 12C shows a state in which the bamboo fiber 12 is divided. The blades 45 adjacent to the rotation direction of the defibration drum 42 are arranged slightly offset in the rotation direction of the defibration drum 42. When the bamboo fiber 12 is defibrated so as to be sandwiched by the offset width, the bamboo fiber 12 is sandwiched between the blades 45. The sandwiched bamboo fiber 12 is pulled by the rotation of the defibrating drum 42 while being wound around the defibrating drum 42. And, by this tensile stress, it is a mechanism in which the bamboo fiber 12 is naturally shredded and dropped at a location where the strength of the bamboo fiber 12 is weakened.

  After passing through the defibrating device 4, the bamboo fiber and meat quality are collected on the receiving platform 51. The receiving platform 51 is provided with a fiber receiving net 52, and the bamboo fiber is fastened to the fiber receiving net 52, while the flesh is dropped to the lower part to separate the bamboo fiber.

It is process drawing of the manufacturing method of the 1st Embodiment of this invention. It is sectional drawing which shows the internal structure of the bamboo used for this invention. It is a schematic diagram which shows a mode that the bamboo fiber is extended in the press process of this invention. It is a side view which shows the mode of the bamboo fiber in the defibration process of this invention. It is process drawing of the manufacturing method of the 2nd Embodiment of this invention. It is a schematic diagram which shows the state of the bamboo piece in the process of weakening the coupling | bonding of the bamboo fiber and meat quality of this invention. It is a side view which shows the outline of the manufacturing apparatus of the bamboo fiber of this invention. It is the elements on larger scale of the press roller surface by this invention. It is a side view which shows a mode that the bamboo fiber of this invention is extended by this invention. It is a principal part enlarged view of the defibration drum surface of this invention. It is a top view which shows the arrangement | positioning state of the blade of the defibration drum of this invention. It is a state figure which defibrates a bamboo piece with the defibration drum of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bamboo fiber manufacturing apparatus 2 Press apparatus 3 Fiber separation apparatus 4 Defibration apparatus 11 Bamboo piece 12 Bamboo fiber, tube 13 Meat 14 Epidermis 15 Endothelial 21 Feed roller 22 Press roller 23 Carriage 24 Vibration supply apparatus 25 Protrusion part 26 Support part 31 Feed roller 32 Fiber separation roller 33 Fiber separation roller 34 Transport table 35 Vibration supply device 36 Vibration supply device 37 Support portion 38 Support portion 41 Feed roller 42 Defibration drum 43 Transport table 44 Housing 45 Blade 46 Wood 51 Loading platform 52 Fiber receiving network

Claims (9)

Forming bamboo pieces in which the bamboo fibers extend in the length direction and the bamboo fibers and meat are integrated;
Pressing the bamboo pieces at predetermined intervals, and extending and weakening the pressed portions of the bamboo fibers;
And a step of dividing the bamboo piece at a portion where the bamboo fiber is stretched while defibrating the bamboo piece.   The method for producing bamboo fiber according to claim 1, wherein the bamboo fiber side of the bamboo piece is pressed and the bamboo fiber is stretched to the meat side.   2. The method for producing bamboo fiber according to claim 1, wherein before the bamboo piece is defibrated, the bond between the bamboo fiber and the flesh is weakened while applying vibration to the bamboo piece.   The method for producing bamboo fiber according to claim 1, wherein the length of the bamboo fiber after defibration is not more than the predetermined interval. A pressing roller provided with convex portions at a predetermined interval on the surface, and passing bamboo paper with the fiber side of the bamboo piece facing upward, while the bamboo fibers are partially pressed at the predetermined interval positions by pressing the convex portions A pressing device for extending;
A fiber separation roller provided on the transport table, and a vibration supply device that transmits vibration to the transport table, while passing through the transport table with the fiber side of the bamboo piece facing upward, A fiber separation device that transmits vibration from the bamboo fiber side of the bamboo piece using the weight of the fiber separation roller to weaken the bond between the bamboo fiber and the meat,
Bamboo fiber, comprising: a defibrating device for taking out the bamboo pieces sent from the conveying table while tearing the bamboo fibers at the predetermined intervals with a defibrating drum having a plurality of blades on the surface thereof Manufacturing equipment.   The bamboo fiber according to claim 5, wherein a vibration supply device is also provided in the conveyance table of the pressing device, and the bamboo fiber is partially stretched by applying vibration to the bamboo piece from the time of pressing by the pressing roller. Manufacturing equipment.   6. The bamboo fiber manufacturing apparatus according to claim 5, wherein the fiber separation roller is movable in the vertical direction, and even if the thickness of the bamboo piece changes, the bamboo piece is constantly vibrated from the fiber side.   6. The bamboo fiber manufacturing apparatus according to claim 5, wherein a number of blades of the defibrating drum are slightly offset in a rotating direction, and the bamboo fibers are torn between the blades.   The bamboo fiber manufacturing apparatus according to claim 5, wherein the defibrating drum is made of wood.

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