A method for processing a bamboo support member

Abstract

The application discloses a processing method of a bamboo supporting component and relates to the field of bamboo processing. Bamboo is cut into bamboo tubes, which are split into arc-shaped bamboo pieces with a certain arc length. The arc-shaped bamboo pieces are standardized in width, thickness and arc degree to obtain standardized arc-shaped bamboo pieces and standardized fan-shaped bamboo pieces with a certain specification. Bamboo pipe materials are prepared by using multiple cylindrical unit modules. Bamboo column materials are prepared by using a central cylindrical unit module and a cylindrical unit module. Alternatively, bamboo pipe materials are prepared by using an arc-shaped laminated unit module. Bamboo column materials are prepared by using a fan-shaped laminated unit module. The application utilizes the arc-shaped characteristics of bamboo in the original state, uses arcs for arcs, reduces the internal stress of the material itself, realizes the thickening and solidification of the hollow thin bamboo tubes through the standardization and specification of the units, reduces the bamboo loss during the processing, improves the utilization rate of the bamboo, maintains the gradient structure and surface texture characteristics of the bamboo in the original state in terms of appearance quality and texture, and reduces the amount of adhesive.

Description

Technical Field

[0001] This invention relates to the field of bamboo processing, and in particular to a method for processing bamboo support components. Background Technology

[0002] Bamboo is a natural biomass material characterized by its hollow, thin-walled structure with a tapered appearance. The bamboo nodes are regularly distributed along the length of the culm, acting like hoops to locally enhance the lateral strength of the tubular culm. This tapered tubular structure gives bamboo excellent strength and toughness, preventing it from splitting or breaking even under significant bending.

[0003] Pipes and columns have wide applications in daily life and are important components of building structures. Currently, commonly used materials in building structures include wood, plastic, metal, and bamboo-wood composites. Bamboo stalks are also used directly as supporting columns for simple tropical houses. Bamboo is a natural tubular material with a hollow conical shell structure, thinner at the top and thicker at the bottom, exhibiting significant anisotropy. Therefore, it cannot be used as a standard form of column / pipe material in industrial products.

[0004] The main processing methods for standard bamboo tubes or columns include: 1) heating and softening bamboo culms to straighten them; 2) using reconstituted bamboo as raw material, milling the reconstituted bamboo into tubes or columns; 3) using rectangular bamboo strips as raw material, first assembling the bamboo strips into square pieces with glue, then milling them into tubes; 4) using rectangular bamboo strips as raw material, directly assembling and gluing them into tubes on a tube mold according to the tube dimensions; and 5) using bamboo strips as raw material, preparing bamboo-wound tubes using a winding method. Regardless of whether reconstituted bamboo or rectangular bamboo strips are used as raw materials, the material utilization rate of the processed bamboo tubes is very low. Furthermore, the crushing and reconstituted process is highly destructive to the bamboo raw material, requires a large amount of adhesive, and easily loses the original elegant texture, feel, and good physical and mechanical properties of the bamboo. Bamboo tubes prepared using the winding method have a complex manufacturing process, with a resin content as high as about 50%, and still lose the natural texture and gradient structure of the bamboo. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a processing method for bamboo support components, which improves the utilization rate of bamboo materials and maintains the original gradient structure and surface texture characteristics of bamboo materials in terms of appearance quality and texture.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides a method for processing bamboo support components, comprising the following steps:

[0008] Step 1: Cut the bamboo into sections according to the length of the bamboo support components to obtain multiple bamboo tubes;

[0009] Step 2: Classify the bamboo tubes according to the outer circumference of the small end. Then, classify the bamboo tubes with the same outer circumference of the small end according to the wall thickness of the small end.

[0010] Step 3: Divide the graded bamboo tubes according to the outer circumference of the small end and the size of the required arc-shaped bamboo strips. The arc length of the arc-shaped bamboo strips shall not exceed 1 / 2 of the arc length. The arc lengths of the small end and the large end of the arc-shaped bamboo strips shall be unequal. The arc-shaped bamboo strips shall be gradient arc-shaped bamboo strips with unequal widths in the length direction.

[0011] Step 4: Standardize the width, thickness, and curvature of multiple curved bamboo strips to obtain standardized curved bamboo strips and standardized fan-shaped bamboo strips of a certain specification.

[0012] Step 5: The bamboo support component is prepared using cylindrical unit modules. Each cylindrical unit module includes multiple standardized arc-shaped bamboo strips bonded sequentially along the circumference. When the bamboo support component to be prepared is a bamboo tube, the innermost cylindrical unit module is fitted onto the central mold. Multiple cylindrical unit modules are bonded sequentially from the inside to the outside to form the bamboo tube. The bamboo tube is fixed with clamps on the outside. After curing for a period of time, the clamps and the central mold are removed. When the bamboo support component to be prepared is a bamboo column, a central cylindrical unit module is first made. The central cylindrical unit module includes multiple standardized fan-shaped bamboo strips bonded sequentially along the circumference. Then, at least one cylindrical unit module is bonded to the outside of the central cylindrical unit module to form the bamboo column. The bamboo column is fixed with clamps on the outside. After curing for a period of time, the clamps are removed.

[0013] Alternatively, the bamboo support component can be prepared using a stacked unit module. When the bamboo support component to be prepared is a bamboo tube, the stacked unit module is an arc-shaped stacked unit module. The arc-shaped stacked unit module includes multiple standardized arc-shaped bamboo strips that are sequentially bonded radially. Multiple arc-shaped stacked unit modules are sequentially bonded circumferentially to form the bamboo tube, and the bamboo tube is fitted onto a central mold. The bamboo tube is fixed to the outside of the bamboo tube using clamps. After curing for a period of time, the clamps and the central mold are removed. When the bamboo support component to be prepared is a bamboo column, the stacked unit module is a fan-shaped stacked unit module. The fan-shaped stacked unit module includes one standardized fan-shaped bamboo strip and at least one standardized arc-shaped bamboo strip that is radially bonded to the outside of the standardized fan-shaped bamboo strip. Multiple fan-shaped stacked unit modules are sequentially bonded circumferentially to form the bamboo column. The bamboo column is fixed to the outside of the bamboo column using clamps. After curing for a period of time, the clamps are removed.

[0014] Preferably, in step one, the length of the bamboo tube is 2cm to 3cm longer than the length of the bamboo support component as a processing allowance.

[0015] Preferably, in step two, the outer circumference and wall thickness of the small end of the bamboo tube are measured. First, the bamboo tubes are graded at 1mm intervals based on the outer circumference of the small end. Then, the bamboo tubes with the same outer circumference of the small end are graded at 0.5mm intervals based on the wall thickness of the small end.

[0016] Preferably, in step four, the upper and lower surfaces of the arc-shaped bamboo strips are treated to remove the green and yellow parts, remove the nodes, and define the arc. The two sides of the arc-shaped bamboo strips are cut to form lateral mating surfaces, resulting in standardized arc-shaped bamboo strips and standardized fan-shaped bamboo strips of a certain specification. This ensures that the lateral mating surfaces of one standardized arc-shaped bamboo strip can fit together with the lateral mating surfaces of its adjacent standardized arc-shaped bamboo strips when they are joined together, and that the lateral mating surfaces of one standardized fan-shaped bamboo strip can fit together with the lateral mating surfaces of its adjacent standardized fan-shaped bamboo strips when they are joined together.

[0017] Preferably, in step four, the central angle of the standardized arc-shaped bamboo strip and the standardized fan-shaped bamboo strip is 30° to 90°, and the thickness is 4mm to 10mm; when the cross-sectional dimensions of the upper and lower ends of the standardized arc-shaped bamboo strip and the standardized fan-shaped bamboo strip are the same, the maximum chord length of the standardized arc-shaped bamboo strip and the standardized fan-shaped bamboo strip is 2cm to 10cm; when the upper and lower ends of the standardized arc-shaped bamboo strip and the standardized fan-shaped bamboo strip are the small end and the large end, respectively, the maximum chord length of the small end of the standardized arc-shaped bamboo strip and the standardized fan-shaped bamboo strip is 2cm to 10cm.

[0018] Preferably, in step five, the bamboo support component is prepared using cylindrical unit modules. When the bamboo support component to be prepared is a bamboo tube, the axial joints of any two adjacent cylindrical unit modules are staggered. When the bamboo support component to be prepared is a bamboo column, the axial joint of the innermost cylindrical unit module is staggered with the axial joint of the central cylindrical unit module, and the axial joints of any two adjacent cylindrical unit modules are staggered.

[0019] Preferably, in step five, the bamboo support component is prepared using a cylindrical unit module. The cylindrical unit module further includes multiple first reinforcing bars. Each standardized arc-shaped bamboo strip has a first reinforcing bar and a first hole on both sides. The first reinforcing bar of each standardized arc-shaped bamboo strip is used to insert into the first hole of the adjacent standardized arc-shaped bamboo strip. When the bamboo support component to be prepared is a bamboo column, the central cylindrical unit module further includes multiple second reinforcing bars. Each standardized fan-shaped bamboo strip has a second reinforcing bar and a second hole on both sides. The second reinforcing bar of each standardized fan-shaped bamboo strip is used to insert into the second hole of the adjacent standardized fan-shaped bamboo strip.

[0020] Preferably, in step five, the bamboo support component is prepared using a stacked unit module. When the bamboo support component to be prepared is a bamboo tube, the stacked unit module is an arc-shaped stacked unit module. The arc-shaped stacked unit module is pressurized and heated. Then, according to the dimensional design requirements of the bamboo tube, the arc-shaped stacked unit module is processed so that the width and arc length at both ends meet the design requirements. The two sides of the arc-shaped stacked unit module are cut to form arc-shaped unit lateral mating surfaces, so that when an arc-shaped unit lateral mating surface of one arc-shaped stacked unit module is assembled with its adjacent arc-shaped stacked units. The side mating surfaces of the arc-shaped units of the module are fitted together; when the bamboo support component to be prepared is a bamboo column, the stacked unit module is a fan-shaped stacked unit module. The fan-shaped stacked unit module is pressurized and heated, and then processed according to the size design requirements of the bamboo column so that the width and arc length at the top and bottom ends meet the design requirements. The two sides of the fan-shaped stacked unit module are cut to form the side mating surfaces of the fan-shaped units, so that the side mating surfaces of the fan-shaped units of one fan-shaped stacked unit module can fit together with the side mating surfaces of the fan-shaped units of its adjacent fan-shaped stacked unit modules when they are assembled.

[0021] Preferably, in step five, the bamboo support component is prepared using a stacked unit module. When the bamboo support component to be prepared is a bamboo tube, the stacked unit module is an arc-shaped stacked unit module. The arc-shaped stacked unit module is placed in a vacuum bag, vacuumed and pressurized, and then the arc-shaped stacked unit module and the vacuum bag are placed together in a heating device for heating, curing, and bonding. Alternatively, the arc-shaped stacked unit module is placed in a fixed mold for pressure and heating. When the bamboo support component to be prepared is a bamboo column, the stacked unit module is a fan-shaped stacked unit module. The fan-shaped stacked unit module is placed in a vacuum bag, vacuumed and pressurized, and then the fan-shaped stacked unit module and the vacuum bag are placed together in a heating device for heating, curing, and bonding. Alternatively, the fan-shaped stacked unit module is placed in a fixed mold for pressure and heating.

[0022] Preferably, in step five, the bamboo support component is prepared using a stacked unit module. When the bamboo support component to be prepared is a bamboo tube, the stacked unit module is an arc-shaped stacked unit module. Each arc-shaped stacked unit module has a third anchor and a third hole on both sides. The third anchor of each arc-shaped stacked unit module is used to insert into the third hole of the adjacent arc-shaped stacked unit module. When the bamboo support component to be prepared is a bamboo column, the stacked unit module is a fan-shaped stacked unit module. Each fan-shaped stacked unit module has a fourth anchor and a fourth hole on both sides. The fourth anchor of each fan-shaped stacked unit module is used to insert into the fourth hole of the adjacent fan-shaped stacked unit module.

[0023] The present invention achieves the following technical effects compared to the prior art:

[0024] The processing method of the bamboo support component of this invention involves cutting bamboo into bamboo tubes of standard length, splitting them into arc-shaped bamboo strips of a certain arc length, and standardizing the width, thickness, and curvature of the arc-shaped bamboo strips to obtain standardized arc-shaped bamboo strips and standardized fan-shaped bamboo strips of a certain specification. Bamboo tubes are prepared using multiple cylindrical unit modules, and bamboo columns are prepared using central cylindrical unit modules and cylindrical unit modules; alternatively, bamboo tubes are prepared using arc-shaped stacked unit modules, and bamboo columns are prepared using fan-shaped stacked unit modules. This invention utilizes the original arc-shaped characteristics of bamboo, using the arc to reduce the internal stress of the material itself. Through the standardization and specification of unit preparation, it achieves the thickening and solidification of hollow thin-walled bamboo tubes, reduces bamboo material loss during processing, improves the utilization rate of bamboo, and maintains the original gradient structure and surface texture characteristics of bamboo in terms of appearance quality and texture. Compared with the preparation methods of crushing and reassembling and winding, it reduces the amount of adhesive used. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the bamboo tube material prepared using cylindrical unit modules in this invention;

[0027] Figure 2 This is a schematic diagram of the bamboo column material prepared using the central cylindrical unit module and the cylindrical unit module in this invention.

[0028] Figure 3 This is a schematic diagram of the bamboo tube material prepared using the arc-shaped stacked unit module in this invention;

[0029] Figure 4 This is a schematic diagram of the bamboo column material prepared using the fan-shaped stacked unit module in this invention;

[0030] Figure 5 This is a schematic diagram of the arc-shaped stacked unit module in this invention;

[0031] Figure 6 This is a schematic diagram of the structure of the fan-shaped stacked unit module in this invention;

[0032] Figure 7 This is a schematic diagram of the structure of the bamboo column material prepared by the fan-shaped stacked unit module with a fourth rebar in this invention;

[0033] Figure 8 This is a schematic diagram of the structure of the conical cylinder prepared in this invention;

[0034] Figure 9 This is a schematic diagram of the structure of the fixed mold used in this invention;

[0035] Figure 10 This is a flowchart illustrating the preparation of bamboo column materials using a fan-shaped stacked unit module in this invention.

[0036] Explanation of reference numerals in the attached diagram: 1. Cylindrical unit module; 2. Central cylindrical unit module; 3. Arc-shaped stacked unit module; 4. Fan-shaped stacked unit module; 5. Standardized arc-shaped bamboo strip; 6. Standardized fan-shaped bamboo strip; 7. Fourth reinforcing bar; 8. Semi-circular shell; 9. Heating tube; 10. Bolt; 11. Divider plate. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] The purpose of this invention is to provide a processing method for bamboo support components, which improves the utilization rate of bamboo materials and maintains the original gradient structure and surface texture characteristics of bamboo materials in terms of appearance quality and texture.

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1-10 As shown, this embodiment provides a method for processing bamboo support components, including the following steps:

[0041] Step 1: Cut the bamboo into sections according to the length of the bamboo support components to obtain multiple bamboo tubes.

[0042] Step 2: Classify the bamboo tubes according to the outer circumference of the small end. Then, classify the bamboo tubes with the same outer circumference of the small end according to the wall thickness of the small end.

[0043] Step 3: Divide the graded bamboo tubes into sections according to the outer circumference of the small end and the required size of the arc-shaped bamboo strips. The arc length of the arc-shaped bamboo strips shall not exceed 1 / 2 of the arc length. The number of small ends and large ends of the multiple arc-shaped bamboo strips obtained from the division of each bamboo tube shall be the same. The arc lengths of the small ends and large ends of the arc-shaped bamboo strips shall be unequal. The arc-shaped bamboo strips shall be gradient arc-shaped bamboo strips with unequal widths in the length direction.

[0044] Step 4: Standardize the width, thickness, and curvature of multiple curved bamboo strips to obtain standardized curved bamboo strips 5 and standardized fan-shaped bamboo strips 6 with certain specifications.

[0045] Step 5: Bamboo support components are prepared using cylindrical unit modules 1. Each cylindrical unit module 1 includes multiple standardized arc-shaped bamboo strips 5 sequentially bonded along the circumference. For example... Figure 1 As shown, when the bamboo support component to be prepared is a bamboo tube, the innermost cylindrical unit module 1 is fitted onto the central mold, and multiple cylindrical unit modules 1 are bonded together from the inside to the outside to form a bamboo tube. The bamboo tube is fixed by clamps on the outside. After curing for a period of time, the clamps and the central mold are removed. The curing time is greater than 4 hours under normal temperature and pressure.

[0046] like Figure 2As shown, when the required bamboo support component is a bamboo column, a central cylindrical unit module 2 is first fabricated. The central cylindrical unit module 2 includes multiple standardized fan-shaped bamboo strips 6 bonded sequentially along the circumference. Then, at least one cylindrical unit module 1 is bonded to the outside of the central cylindrical unit module 2 to form the bamboo column. The bamboo column is fixed to the outside using clamps. After curing for a period of time, the clamps are removed. The curing and fixing time at room temperature and pressure is greater than 4 hours. When preparing the bamboo column using multiple cylindrical unit modules 1, multiple cylindrical unit modules 1 are bonded sequentially to the outside of the central cylindrical unit module 2 to form the bamboo column.

[0047] Alternatively, bamboo support components can be fabricated using stacked unit modules, such as... Figure 3 and Figure 5 As shown, when the required bamboo support component is a bamboo tube, the stacked unit module is an arc-shaped stacked unit module 3. The arc-shaped stacked unit module 3 includes multiple standardized arc-shaped bamboo pieces 5 that are sequentially bonded in the radial direction. Multiple arc-shaped stacked unit modules 3 are sequentially bonded in the circumferential direction to form a bamboo tube, and the bamboo tube is fitted onto the central mold. The bamboo tube is fixed by clamps on the outside. After curing for a period of time, the clamps and the central mold are removed. The curing time is greater than 4 hours under normal temperature and pressure.

[0048] like Figure 4 and Figure 6 As shown, when the required bamboo support component is a bamboo column, the laminated unit module is a fan-shaped laminated unit module 4. The fan-shaped laminated unit module 4 includes a standardized fan-shaped bamboo strip 6 and at least one standardized arc-shaped bamboo strip 5 radially bonded to the outside of the standardized fan-shaped bamboo strip 6. Multiple fan-shaped laminated unit modules 4 are sequentially bonded circumferentially to form a bamboo column. The bamboo column is fixed to the outside using clamps. After curing for a period of time, the clamps are removed. The fixing and curing time at room temperature and pressure is greater than 4 hours. When preparing the bamboo column, the fan-shaped laminated unit module 4 uses multiple standardized arc-shaped bamboo strips 5. The fan-shaped laminated unit module 4 includes a standardized fan-shaped bamboo strip 6 and multiple standardized arc-shaped bamboo strips 5 radially bonded to the outside of the standardized fan-shaped bamboo strip 6.

[0049] As can be seen, in this embodiment, the bamboo is first cut into bamboo tubes of standard length, which are then split into arc-shaped bamboo strips of a certain arc length. The width, thickness, and curvature of the arc-shaped bamboo strips are standardized to obtain standardized arc-shaped bamboo strips 5 and standardized fan-shaped bamboo strips 6 of a certain specification. Bamboo tubes are prepared using multiple cylindrical unit modules 1, and bamboo columns are prepared using a central cylindrical unit module 2 and a cylindrical unit module 1. Alternatively, bamboo tubes can be prepared using an arc-shaped stacked unit module 3, and bamboo columns can be prepared using a fan-shaped stacked unit module 4.

[0050] This embodiment utilizes the inherent curved shape of bamboo, using the curve itself to reduce internal stress and thus minimize dimensional instability such as shape rebound during application. Through standardized and regulated unit fabrication, it achieves both thick-walled and solidified hollow bamboo tubes, reducing bamboo material loss during processing and improving utilization. It maintains the original gradient structure and surface texture characteristics of bamboo in terms of appearance and texture, reducing adhesive usage compared to methods involving crushing, reassembling, and winding. Furthermore, the use of cylindrical unit modules 1 or stacked unit modules improves fabrication efficiency.

[0051] In step one, the length of the bamboo tube is 2cm to 3cm longer than the length of the bamboo support component as a processing allowance.

[0052] In step two, the outer circumference and wall thickness of the small end of the bamboo tube are measured. Specifically, the outer circumference and wall thickness of the small end of the bamboo tube are measured using a mechanical contact probe. First, the bamboo tubes are graded at 1mm intervals based on the outer circumference of the small end. Then, bamboo tubes of the same grade are graded at 0.5mm intervals based on the wall thickness of the small end. After grading, bamboo tubes of different grades can be selected according to actual needs.

[0053] In step four, the upper and lower surfaces of the curved bamboo strips undergo de-greening, de-yellowing, node removal, and arc-setting treatments. Specifically, the curved bamboo strips are softened by steam. After softening, the inner and outer nodes, as well as the siliceous and waxy layers on the upper and lower surfaces, are removed using an integrated machine for de-greening, de-yellowing, node removal, and arc-expansion. The curved bamboo strips are then expanded in arc shape and dried for final shaping. In this embodiment, concave and convex arc-shaped milling cutters on the integrated machine are used to de-green, de-yellow, and node-setting the upper and lower surfaces of the curved bamboo strips, respectively. Simultaneously, a smooth, round roller with a certain curvature is used to expand the arc shape of the bamboo strips, thus producing curved bamboo strips of a specific curvature.

[0054] The two sides of the curved bamboo strip are cut to form the side joint surfaces of the bamboo strips, resulting in standardized curved bamboo strips 5 and standardized fan-shaped bamboo strips 6 of a certain specification. This allows the side joint surfaces of a standardized curved bamboo strip 5 to fit together with the side joint surfaces of its adjacent standardized curved bamboo strips 5 when they are joined together, and the side joint surfaces of a standardized fan-shaped bamboo strip 6 to fit together with the side joint surfaces of its adjacent standardized fan-shaped bamboo strips 6 when they are joined together.

[0055] Among them, the standardized fan-shaped bamboo strip 6 is used to make the central cylindrical unit module 2 and is set on the innermost side of the fan-shaped stacked unit module 4, and the standardized arc-shaped bamboo strip 5 is used to make the cylindrical unit module 1, the arc-shaped stacked unit module 3 and the outer side of the standardized fan-shaped bamboo strip 6 set on the fan-shaped stacked unit module 4.

[0056] In step four, the central angle of the standardized arc-shaped bamboo strip 5 and the standardized fan-shaped bamboo strip 6 is 30° to 90°, and the thickness is 4mm to 10mm.

[0057] When it is necessary to prepare round tubes and cylinders, the cross-sectional dimensions of the upper and lower ends of the standardized arc-shaped bamboo strip 5 and the standardized fan-shaped bamboo strip 6 are the same, and the maximum chord length of the standardized arc-shaped bamboo strip 5 and the standardized fan-shaped bamboo strip 6 is 2cm to 10cm.

[0058] like Figure 8 As shown, when it is necessary to prepare conical tubes and conical cylinders, the upper and lower ends of the standardized arc-shaped bamboo strip 5 and the standardized fan-shaped bamboo strip 6 are the small end and the large end, respectively. The maximum chord length of the small end of the standardized arc-shaped bamboo strip 5 and the standardized fan-shaped bamboo strip 6 is 2cm to 10cm.

[0059] When using cylindrical unit modules 1 to prepare bamboo support components, each cylindrical unit module 1 includes four standardized arc-shaped bamboo strips 5 bonded sequentially along the circumference. When the required bamboo support component is a bamboo column, a central cylindrical unit module 2 is first fabricated, which includes four standardized fan-shaped bamboo strips 6 bonded sequentially along the circumference. Alternatively, four stacked unit modules can be used to prepare the bamboo support component. Specifically, four arc-shaped stacked unit modules 3 are bonded sequentially along the circumference to form bamboo tubes, and four fan-shaped stacked unit modules 4 are bonded sequentially along the circumference to form bamboo columns. In this case, the central angle of the required standardized arc-shaped bamboo strips 5 and standardized fan-shaped bamboo strips 6 is 90°.

[0060] In step five, the bamboo support component is prepared by using cylindrical unit module 1. When the bamboo support component to be prepared is bamboo tube, the axial joints of any two adjacent cylindrical unit modules 1 are staggered to make the bamboo tube structure more robust.

[0061] It should be noted that adjacent multi-layer cylindrical unit modules 1 can also be used as a group, with the axial joint positions of each group corresponding and the axial joints of adjacent groups staggered.

[0062] When the bamboo support component to be prepared is a bamboo column, the axial joint of the innermost cylindrical unit module 1 is staggered with the axial joint of the central cylindrical unit module 2, and the axial joints of any two adjacent cylindrical unit modules 1 are staggered to make the bamboo column structure more robust.

[0063] It should be noted that the central cylindrical unit module 2 and several layers of cylindrical unit modules 1 can also be grouped together, with adjacent multi-layer cylindrical unit modules 1 forming another group. The axial joint positions of each group are corresponding, and the axial joints of adjacent groups are staggered.

[0064] The method of preparing bamboo support components using cylindrical unit module 1 is based on the diameter of bamboo tubes or bamboo columns as the standard. According to the size requirements of bamboo tubes or bamboo columns, the number of parts required to form bamboo tubes or bamboo columns is designed, thereby determining the central angle of standardized arc-shaped bamboo strips 5 and standardized fan-shaped bamboo strips 6.

[0065] When the required bamboo support component is bamboo tubing, the standardized arc-shaped bamboo strips 5 of the innermost cylindrical unit module 1 are sequentially bonded circumferentially, ensuring that the inner walls of each standardized arc-shaped bamboo strip 5 of the innermost cylindrical unit module 1 are in contact with the outer wall of the central mold, thus providing support for the innermost cylindrical unit module 1. Then, the standardized arc-shaped bamboo strips 5 of the next layer of cylindrical unit modules 1 are bonded to the outer wall of the innermost cylindrical unit module 1, and so on, to achieve the bonding of each cylindrical unit module 1.

[0066] When the required bamboo support component is a bamboo column, multiple standardized fan-shaped bamboo pieces 6 are sequentially glued together along the circumference to form a central cylindrical unit module 2. Then, multiple standardized arc-shaped bamboo pieces 5 of the next layer of cylindrical unit module 1 are glued to the outer wall of the central cylindrical unit module 2, and so on to achieve the bonding of each cylindrical unit module 1.

[0067] In step five, the cylindrical unit module 1 is used to prepare the bamboo support component. To make the connection of the cylindrical unit module 1 more secure, the cylindrical unit module 1 also includes multiple first anchor bars. Each standardized arc-shaped bamboo strip 5 has a first anchor bar and a first hole on both sides. The first anchor bars of each standardized arc-shaped bamboo strip 5 are used to insert into the first hole of the adjacent standardized arc-shaped bamboo strip 5. Adhesive can be applied to the surface of the first anchor bars to strengthen the connection. When the bamboo support component to be prepared is a bamboo column, in order to make the connection of the central cylindrical unit module 2 more secure, the central cylindrical unit module 2 also includes multiple second anchor bars. Each standardized fan-shaped bamboo strip 6 has a second anchor bar and a second hole on both sides. The second anchor bars of each standardized fan-shaped bamboo strip 6 are used to insert into the second hole of the adjacent standardized fan-shaped bamboo strip 6. Adhesive can be applied to the surface of the second anchor bars to strengthen the connection.

[0068] In step five, bamboo support components are prepared using a stacked unit module method. When the required bamboo support component is a bamboo tube, the stacked unit module is an arc-shaped stacked unit module 3. The arc-shaped stacked unit module 3 is pressurized and heated, and then its edges are aligned and its length is determined. According to the size design requirements of the bamboo tube, the arc-shaped stacked unit module 3 is processed so that the width and arc length at both ends meet the design requirements. The two sides of the arc-shaped stacked unit module 3 are cut to form arc-shaped unit lateral mating surfaces, so that the arc-shaped unit lateral mating surfaces of one arc-shaped stacked unit module 3 can fit against the arc-shaped unit lateral mating surfaces of its adjacent arc-shaped stacked unit module 3 when they are assembled.

[0069] When the required bamboo support component is a bamboo column, the stacked unit module is a fan-shaped stacked unit module 4. The fan-shaped stacked unit module 4 is pressurized and heated, and then its edges are aligned and its length is determined. According to the size design requirements of the bamboo column, the fan-shaped stacked unit module 4 is processed so that the width and arc length of the upper and lower ends meet the design requirements. The two sides of the fan-shaped stacked unit module 4 are cut to form fan-shaped unit lateral mating surfaces, so that the fan-shaped unit lateral mating surfaces of one fan-shaped stacked unit module 4 can fit together with the fan-shaped unit lateral mating surfaces of its adjacent fan-shaped stacked unit module 4 when they are assembled.

[0070] The method of preparing bamboo support components by using stacked unit modules is based on the diameter of bamboo tubes or bamboo columns as the standard. According to the size requirements of bamboo tubes or bamboo columns, the number of parts required to form bamboo tubes or bamboo columns is designed, thereby determining the central angle of standardized arc-shaped bamboo strips 5 and standardized fan-shaped bamboo strips 6.

[0071] When the required bamboo support component is bamboo tubing, the stacked unit module is an arc-shaped stacked unit module 3. This ensures that the innermost standardized arc-shaped bamboo strip 5 is fitted against the outer wall of the arc-shaped mold. The next layer of standardized arc-shaped bamboo strip 5 is then bonded to the outside of the innermost standardized arc-shaped bamboo strip 5, and so on, to achieve the bonding of each standardized arc-shaped bamboo strip 5. Multiple arc-shaped stacked unit modules 3 are bonded sequentially along the circumference, ensuring that the inner wall of each arc-shaped stacked unit module 3 is fitted against the outer wall of the central mold, thus allowing the central mold to provide support for the arc-shaped stacked unit module 3.

[0072] When the required bamboo support component is a bamboo column, the stacked unit module is a fan-shaped stacked unit module 4. This allows the innermost standardized arc-shaped bamboo strip 5 to be bonded to the outer wall of the central standardized fan-shaped bamboo strip 6. The next layer of standardized arc-shaped bamboo strips 5 is then bonded to the outside of the innermost standardized arc-shaped bamboo strip 5, and so on, to achieve the bonding of each standardized arc-shaped bamboo strip 5. Multiple fan-shaped stacked unit modules 4 are then bonded sequentially along the circumference.

[0073] Specifically, a double-sided adhesive application method is adopted, and the adhesive is a structural adhesive, which can be a phenolic resin or resorcinol resin adhesive.

[0074] In step five, bamboo support components are prepared using a stacked unit module. When the bamboo support component to be prepared is a bamboo tube, the stacked unit module is an arc-shaped stacked unit module 3. The arc-shaped stacked unit module 3 is placed in a vacuum bag and vacuumed and pressurized. The arc-shaped stacked unit module 3 and the vacuum bag are placed together in a heating device for heating, curing and bonding. Alternatively, the arc-shaped stacked unit module 3 is placed in a fixed mold for pressure and heating.

[0075] When using the vacuum pressure bonding method, the assembled arc-shaped laminated unit module 3 is placed in a vacuum bag and vacuumed and pressurized. The vacuum pressure is 1 atmosphere. After reaching the vacuum pressure value, the arc-shaped laminated unit module 3 and the vacuum bag are placed together in a curing oven for heating, curing and bonding.

[0076] like Figure 9 As shown, the fixed mold includes a partition plate 11, an outer cover component, and a heating tube 9. The partition plate 11 is disposed in the outer cover component and is used to divide the interior of the outer cover component into multiple equal sector-shaped regions. The central angle of the sector-shaped regions formed after the division matches the central angle of the stacked unit module. Specifically, when the number of stacked unit modules is four, that is, when the central angle is 90°, the partition plate 11 is a cross-shaped plate. The outer cover component includes two semi-circular shells 8. One end of the two semi-circular shells 8 is hinged, and the other end of the two semi-circular shells 8 is provided with connecting ears. Each connecting ear is provided with a through hole. Bolts 10 pass through the two through holes in sequence and nuts are installed to connect the two semi-circular shells 8 for sealing, fixing, and pressurizing. The semi-circular shells 8 are hollow structures, and the heating tube 9 is disposed inside the semi-circular shells 8.

[0077] When using a fixed mold pressure bonding method, the arc-shaped stacked unit module 3 is placed in a fan-shaped area of ​​the outer cover component. A fan-shaped mold matching the structure of the arc-shaped stacked unit module 3 is set on the inner side of the fan-shaped area to support the inner side of the arc-shaped stacked unit module 3. The two semi-circular shells 8 are connected by bolts 10 and nuts. The outer cover component applies pressure to the outer side of the arc-shaped stacked unit module 3 and heats it through the heating pipe 9.

[0078] When the required bamboo support component is a bamboo column, the laminated unit module is a fan-shaped laminated unit module 4. The fan-shaped laminated unit module 4 is placed in a vacuum bag and vacuumed and pressurized. The fan-shaped laminated unit module 4 and the vacuum bag are placed together in a heating device for heating, curing and bonding. Alternatively, the fan-shaped laminated unit module 4 is placed in a fixed mold for pressure and heating.

[0079] When using the vacuum pressure bonding method, the assembled fan-shaped laminated unit module 4 is placed in a vacuum bag and vacuumed and pressurized. The vacuum pressure is 1 atmosphere. After reaching the vacuum pressure value, the fan-shaped laminated unit module 4 and the vacuum bag are placed together in a curing oven for heating, curing and bonding.

[0080] When using a fixed mold pressure bonding method, the fan-shaped stacked unit module 4 is placed in a fan-shaped area of ​​the outer cover component. The inner side of the fan-shaped stacked unit module 4 is in contact with the partition plate 11. The partition plate 11 supports the inner side of the fan-shaped stacked unit module 4. The two semi-circular shells 8 are connected by bolts 10 and nuts. The outer cover component applies pressure to the outer side of the fan-shaped stacked unit module 4 and heats it through the heating pipe 9.

[0081] In step five, bamboo support components are prepared using a stacked unit module method. When the required bamboo support component is bamboo tubing, the stacked unit module is an arc-shaped stacked unit module 3. To make the connection of the arc-shaped stacked unit modules 3 more secure, each arc-shaped stacked unit module 3 has a third anchor and a third hole on both sides. The third anchor of each arc-shaped stacked unit module 3 is inserted into the third hole of the adjacent arc-shaped stacked unit module 3. Adhesive can be applied to the surface of the third anchor to strengthen the connection; for example... Figure 7 As shown, when the bamboo support component to be prepared is a bamboo column, the laminated unit module is a fan-shaped laminated unit module 4. In order to make the fan-shaped laminated unit module 4 more firmly connected, each fan-shaped laminated unit module 4 has a fourth anchor 7 and a fourth hole on both sides. The fourth anchor 7 of each fan-shaped laminated unit module 4 is used to be inserted into the fourth hole of the adjacent fan-shaped laminated unit module 4. Adhesive can be applied to the surface of the fourth anchor 7 to strengthen the connection.

[0082] In this embodiment, the materials for the first, second, third, and fourth reinforcing bars 7 are bamboo composite timber, bamboo, reconstituted bamboo, or metal bolts 10, and their shapes are cylindrical, conical, trapezoidal, or rectangular.

[0083] The central mold used in this embodiment is a one-piece structure, or is composed of multiple fan-shaped structures, which facilitates the removal of the bamboo tubes after they have cured and shaped. The clamps in this embodiment are metal clamps.

[0084] In this specific embodiment, the steps for preparing bamboo tubing using the arc-shaped stacked unit module 3 are as follows:

[0085] (1) Sectioning: Cutting bamboo into sections to obtain bamboo tubes;

[0086] (2) Splitting: Select a bamboo tube with a length of 1.2m and an outer diameter of 125-130mm and split it into 3 parts; the moisture content of the arc-shaped bamboo strips was measured to be around 85%;

[0087] (3) Softening: Soften the curved bamboo strips with steam at 180℃ for 8 minutes;

[0088] (4) Arc expansion: The softened arc-shaped bamboo strips are processed by removing the inner and outer bamboo nodes of the bamboo strips using an integrated machine for removing green, yellow and nodes, and the arc-shaped bamboo strips are then expanded.

[0089] (5) Drying and shaping: The expanded arc-shaped bamboo strips are fixed in a drying and shaping mold with a radius of 75mm and placed in a drying kiln to dry at a temperature of 75℃ until the moisture content is less than 10%.

[0090] (6) Preparation of curved bamboo laminated units: Based on the design and calculation of the bamboo tube dimensions, the shaped curved bamboo strips are coated with phenolic resin at a rate of 150-200 g / m. 2 After applying the adhesive, the bamboo strips are pre-dried at 60°C for 45 minutes. Then, the three-layer shaped arc bamboo strips are glued together to form an arc bamboo laminate unit at a hot-pressing temperature of 145°C. The unit is then treated by vacuum pressure gluing.

[0091] (7) Edge alignment and length setting: Based on the dimensions of the bamboo tube, the three-layer glued arc-shaped bamboo laminated unit is aligned along the direction of the center to form an arc-shaped laminated unit module 3 with an outer arc chord length of 107mm and an inner arc chord length of 83mm.

[0092] (8) Adhesive-coated pipes: Apply phenolic resin to the sides of the arc-shaped laminated unit module 3, with an application rate of 150-200 g / m. 2 After applying the adhesive, the four arc-shaped laminated unit modules are pre-dried at 60°C for 45 minutes, and then hot-pressed at 145°C to form a pipe.

[0093] In another specific embodiment, such as Figure 10 As shown, the steps for preparing bamboo columns using the fan-shaped stacked unit module 4 are as follows:

[0094] (1) Sectioning: Cutting bamboo into sections to obtain bamboo tubes;

[0095] (2) Splitting: Select bamboo tubes with a length of 1.2m, an outer diameter of 125-130mm, and a wall thickness of 9mm at the small end, and split them into arc-shaped bamboo strips with outer arc lengths of 118mm, 106mm, 94mm, 82mm, 71mm, 59mm, 47mm, 35mm, 24mm, and 12mm respectively; the moisture content of the arc-shaped bamboo strips was measured to be around 85%;

[0096] (3) Softening: Soften the curved bamboo strips with steam at 180℃ for 8 minutes;

[0097] (4) Preparation of standardized arc-shaped bamboo strips 5 and standardized fan-shaped bamboo strips 6: After softening, the arc-shaped bamboo strips are treated with an integrated machine for removing green, yellow and nodes and expanding arc to remove the inner and outer nodes and the silica and wax layers on the upper and lower surfaces of the bamboo strips, and the arc-shaped bamboo strips are expanded. At the same time, the sides of the arc-shaped bamboo strips are side-cut and width-fixed to prepare standardized arc-shaped bamboo strips 5 of a certain width, and standardized fan-shaped bamboo strips 6 of a certain width are also prepared.

[0098] (6) Preparation of fan-shaped stacked unit module 4: Based on the design and calculation of bamboo tube dimensions, standardized arc-shaped bamboo strips 5 and standardized fan-shaped bamboo strips 6 are coated with MDI adhesive, with an adhesive application rate of 220g / m 2A standardized fan-shaped bamboo strip 6 and multiple standardized arc-shaped bamboo strips 5 arranged radially outside the standardized fan-shaped bamboo strip 6 are sequentially bonded together to form a fan-shaped stacked unit module 4. The four fan-shaped stacked unit modules 4 are placed in a fixed mold for pressure and heated by a heating tube 9 to dry to a moisture content of less than 10%.

[0099] (7) Trimming and sizing: Based on the dimensions of the bamboo column, the two sides of the four glued fan-shaped stacked unit modules 4 are planed or sawn to trim the edges so that their dimensions reach 1 / 4 of the target cylindrical dimensions.

[0100] (8) Adhesive-coated columns: Apply MDI adhesive to the sides of the fan-shaped laminated unit module 4, with an application rate of 200g / m. 2 After applying the adhesive, fix it with clamps. After the adhesive has fully cured at room temperature for 4 hours, remove the clamps.

[0101] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for processing bamboo support components, characterized in that, Includes the following steps: Step 1: Cut the bamboo into sections according to the length of the bamboo support components to obtain multiple bamboo tubes; Step 2: Classify the bamboo tubes according to the outer circumference of the small end. Then, classify the bamboo tubes with the same outer circumference of the small end according to the wall thickness of the small end. Step 3: Divide the graded bamboo tubes according to the outer circumference of the small end and the size of the required arc-shaped bamboo strips. The arc length of the arc-shaped bamboo strips shall not exceed 1 / 2 of the arc length. The arc lengths of the small end and the large end of the arc-shaped bamboo strips shall be unequal. The arc-shaped bamboo strips shall be gradient arc-shaped bamboo strips with unequal widths in the length direction. Step 4: Standardize the width, thickness, and curvature of multiple curved bamboo strips to obtain standardized curved bamboo strips of a certain specification; Step 5: The bamboo support component is prepared using a stacked unit module. The bamboo support component is a bamboo tube. The stacked unit module is an arc-shaped stacked unit module, which includes multiple standardized arc-shaped bamboo strips that are sequentially bonded together radially. The arc-shaped stacked unit module is placed in a fixed mold for pressure and heating. The fixed mold includes a partition plate, an outer cover component, and a heating tube. The partition plate is disposed in the outer cover component to divide the interior of the outer cover component into multiple equal sector-shaped regions. The central angle of the sector-shaped regions formed after the division matches the central angle of the stacked unit module. The outer cover component includes two semi-circular shells, one end of which is hinged. The other end of each semi-circular shell is provided with a connecting lug. Each connecting lug is provided with a through hole. Bolts are passed through the two through holes in sequence and nuts are installed to connect the two semi-circular shells. A circular shell connection is used for sealing, fixing, and pressurizing. The semi-circular shell has a hollow structure and a heating tube is installed inside. When using the fixed mold pressurizing bonding method, the arc-shaped stacked unit module is placed in a fan-shaped area of ​​the outer cover component. A fan-shaped mold matching the structure of the arc-shaped stacked unit module is set on the inner side of the fan-shaped area to support the inner side of the arc-shaped stacked unit module. The two semi-circular shells are connected by bolts and nuts. The outer cover component applies pressure to the outer side of the arc-shaped stacked unit module and heats it through the heating tube. Then, according to the size design requirements of the bamboo tube, the arc-shaped stacked unit module is processed so that the width and arc length at the top and bottom ends meet the design requirements. The two sides of the arc-shaped stacked unit module are cut to form arc-shaped unit lateral docking surfaces, so that the arc-shaped unit lateral docking surfaces of one arc-shaped stacked unit module can fit into the arc-shaped unit lateral docking surfaces of its adjacent arc-shaped stacked unit modules when they are joined together. Multiple arc-shaped stacked unit modules are sequentially bonded together along the circumference to form the bamboo tube, and the bamboo tube is fitted onto the central mold. The bamboo tube is fixed to the outside with clamps, and the clamps and the central mold are removed after curing for a period of time.

2. The processing method of the bamboo support component according to claim 1, characterized in that, In step one, the length of the bamboo tube is 2cm to 3cm longer than the length of the bamboo support component as a processing allowance.

3. The processing method of the bamboo support component according to claim 1, characterized in that, In step two, the outer circumference and wall thickness of the small end of the bamboo tube are measured. First, the bamboo tubes are graded at 1mm intervals based on the outer circumference of the small end. Then, bamboo tubes with the same outer circumference of the small end are graded at 0.5mm intervals based on the wall thickness of the small end.

4. The processing method of the bamboo support component according to claim 1, characterized in that, In step four, the upper and lower surfaces of the arc-shaped bamboo strips are treated to remove the green and yellow parts, remove the nodes, and define the arc. The two sides of the arc-shaped bamboo strips are cut to form lateral mating surfaces, resulting in standardized arc-shaped bamboo strips of a certain size. This ensures that the lateral mating surfaces of one standardized arc-shaped bamboo strip can fit together with the lateral mating surfaces of its adjacent standardized arc-shaped bamboo strips when they are joined together.

5. The processing method of the bamboo support component according to claim 1, characterized in that, In step four, the central angle of the standardized arc-shaped bamboo strip is 30°~90° and the thickness is 4mm~10mm.

6. The processing method of the bamboo support component according to claim 1, characterized in that, In step five, each of the arc-shaped stacked unit modules is provided with a third anchor and a third hole on both sides. The third anchor of each arc-shaped stacked unit module is used to be inserted into the third hole of the adjacent arc-shaped stacked unit module.

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