Tangential bamboo veneer preparation device and method for manufacturing reconstructed basic unit and integrated board

Abstract

The present invention discloses a device for preparing tangential bamboo slices, comprising a workbench and a mechanism for removing inner and outer bamboo nodes and roughening the surface, a planing mechanism, and a tangential cutting mechanism arranged on the workbench from front to back. The mechanism for removing inner and outer bamboo nodes and the planing mechanism are arranged above a transmission device, and a classification hopper is arranged below the tangential cutting mechanism. The present invention also discloses a method for manufacturing a basic unit for reorganizing bamboo slices and integrated board materials. The tangential bamboo slice preparation device designed by the present invention can automatically, continuously, and efficiently remove the roughening and planing of the outer and inner nodes of bamboo and the green / yellow surface of bamboo to obtain bamboo slices with different wall thicknesses, sequentially adjust the bamboo slices and stack the thickness to form a reorganized basic unit, and then glue the integrated board materials. The bamboo material is transformed from a hollow, barrel-shaped structure into a designable large-size board material with the appearance of flattened bamboo. The growth stress of the bamboo material is fully released through unit segmentation and symmetrical reorganization, and the structure and performance of the bamboo material are optimized.

Description

Technical Field

[0001] The invention belongs to the technical field of bamboo material processing, and particularly relates to a device for preparing tangential bamboo slices and a method for manufacturing reconstructed basic units and integrated boards. Background Art

[0002] With the prevalence of low-carbon concepts and the idea that "bamboo is better than wood," research into high-quality bamboo products is gaining momentum. Compared to wood, bamboo boasts high strength, good toughness, high strength, and beautiful texture, making it an ideal raw material for engineering structures and decorative finishes. However, bamboo's small diameter, hollow core, and thin walls restrict its industrial development. Currently developed bamboo units suffer from low material utilization, damage to the original bamboo structure, and unstable paving structures. Due to the structural differences between bamboo and wood, existing, established wood processing machinery is difficult to effectively apply to bamboo processing. Bamboo development began in the 1980s, a mere forty years, and bamboo processing machinery has primarily relied on self-developed technology. Currently, bamboo processing is primarily a staged, mechanized process, lacking continuous production technology and equipment.

[0003] The upgrade of basic bamboo units will revolutionize the development of bamboo materials. The evolution from finely planed bamboo strips, flattened bamboo, bamboo chips, bamboo shavings, bamboo fiber, and finally bamboo fiber bundles documents the typical development of bamboo materials, from standard bamboo flooring, flattened bamboo, bamboo plywood, bamboo particleboard, bamboo fiberboard, and finally reconstructed bamboo materials. Bamboo chips are high-quality bamboo units, but due to the relatively limited processing machinery and unstable unit performance, they are mainly used for weaving bamboo curtains and mats, and then pressing them into boards, resulting in low-quality boards. Summary of the Invention

[0004] The present invention addresses the shortcomings of the prior art by providing a device for preparing tangential bamboo lamellae, a method for reconstructing basic units, and a method for manufacturing integrated board squares. Based on the characteristic of gradual density variation along the bamboo wall thickness, the processed tangential bamboo lamellae are structurally reconstructed using each bamboo tube as a unit to obtain reconstructed basic units. These reconstructed basic units are then integrated longitudinally and transversely to produce squares or large-format panels for furniture columns, frame structures, panels, side panels, and laminates. This method transforms the hollow, barrel-shaped structure of the bamboo into a panel with a designable size and a surface that resembles flattened bamboo (typically, the resulting panel has a flattened width 3-18 times the circumference of the bamboo tube). Compared to flattened bamboo, the method optimizes density through symmetrical reconstructed thickness. The transverse unit division fully relieves growth stress in the bamboo, optimizing its structure and performance. This method achieves high bamboo processing efficiency and a high level of automation and mechanization.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a tangential bamboo slice preparation device, comprising a workbench and a bamboo node removal mechanism, a planing mechanism and a tangential cutting mechanism arranged on the workbench from front to back, the bamboo node removal mechanism comprising an outer bamboo node removal mechanism and an inner bamboo node removal mechanism, the inner bamboo node removal mechanism, the outer bamboo node removal mechanism and the planing mechanism are arranged above a transmission device, the inner bamboo node removal mechanism is provided with an inner bamboo node removal tool for removing the inner bamboo nodes of the bamboo tube to be processed, the outer bamboo node removal mechanism is provided with an outer bamboo node removal tool for removing the outer bamboo nodes of the bamboo tube to be processed, the inner bamboo node removal mechanism, the outer bamboo node removal mechanism and the transmission device are installed on the workbench, and a material bin is provided below the tangential cutting mechanism.

[0006] and a control wheel that is located on the rotation side of the motor and the control wheel, and a rotation axis is fixed on the motor to the rotation side, and a first spring is installed on the motor to rotate the first and second motors.

[0007] The second cylinder is horizontally mounted on the second cylinder base, the second cylinder base is fixedly mounted on the lifting device, the lifting device is mounted on the workbench, the telescopic rod of the second cylinder extends out of the second cylinder base and is fixedly connected to the sliding rod, the sliding rod is sequentially penetrated by a third push plate, a second spring and a fourth push plate, the third push plate is fixed on the sliding rod, the two ends of the second spring are fixedly connected to the third push plate and the fourth push plate respectively, and the peripheral sides of the third push plate and the fourth push plate are connected with a resist for fixing the inner bamboo node of the bamboo tube to be processed through a second opening device; the end of the sliding rod away from the telescopic rod of the second cylinder is provided with a conical recess that matches the conical protrusion; the telescopic rods of the first cylinder and the second cylinder are arranged facing each other, and the first cylinder and the second cylinder are arranged in sequence along the direction of operation of the transmission device.

[0008] Preferably, the first opening device includes a plurality of first connecting rods, a second connecting rod and a third connecting rod; the first connecting rod is rotatably installed on the circumferential side of the first push plate, the second connecting rod is rotatably installed on the circumferential side of the second push plate, the other end of the first connecting rod is slidably connected to the second connecting rod and slides along the second connecting rod, the third connecting rod is rotatably installed on the side of the rotating shaft away from the first motor, the third connecting rod and the second connecting rod are rotatably connected, and a horizontally arranged inner bamboo joint removing tool is also rotatably installed at the connection between the third connecting rod and the second connecting rod;

[0009] The second opening device includes multiple fourth connecting rods and fifth connecting rods; the fourth connecting rod is rotatably installed on the circumferential side of the third push plate, and the fifth connecting rod is rotatably installed on the circumferential side of the fourth push plate. The other end of the fourth connecting rod is slidably connected to the fifth connecting rod and slides along the fifth connecting rod, and the other end of the fifth connecting rod is connected to the abutment.

[0010] Preferably, a touch switch is provided on the workbench, and the touch switch is electrically connected to the second cylinder; the touch switch is located on the workbench in the middle of the transmission device.

[0011] Preferably, two anti-retrograde devices are provided on the workbench, and the anti-retrograde devices are installed on the workbench in the middle position of the transmission device, one of which is located between the clamping and fixing devices, and the other is located on the front side of the planing mechanism; the anti-retrograde device includes a retrograde block and a support spring, and the retrograde block is tilted along the direction of operation of the transmission device and is arranged on the workbench in the middle position of the transmission device, one end of the retrograde block is rotatably connected to the table top of the workbench, and the other end of the retrograde block is supported on the workbench by a support spring.

[0012] Preferably, the outer bamboo node removal mechanism includes a third cylinder and a second motor, the third cylinder is connected to the outer bamboo node removal tool through a blade holder, the outer bamboo node removal tool is a shape memory alloy blade, and has two forms, one form is a cylindrical shape surrounding the outer side of the bamboo tube to be processed, and the other form is a parallelogram, the cylinder body of the third cylinder is fixedly connected to the end of the vertical rod body of the L-shaped push rod, the horizontal rod body of the L-shaped push rod is slidably set on the fixed slider, the fixed slider is fixed on the workbench, the end of the horizontal rod body of the L-shaped push rod is fixedly connected to the middle position of the sliding rod, the sliding rod is tilted, and the sliding rod is tilted. A sliding groove is provided, in which a slider is slidably provided, and the slider is rotatably connected to one end of the active rod, and the other end of the active rod is rotatably connected to the output shaft of the second motor; the blade holder includes a U-shaped seat fixedly connected to the telescopic rod of the third cylinder, the open end of the U-shaped seat is connected to the cylindrical mounting seat, and a tool mounting sleeve is rotatably mounted on the cylindrical mounting seat, and a bamboo node removing tool is fixedly mounted on the tool mounting sleeve, and the cylindrical mounting seat is also provided with washers located on both sides of the tool mounting sleeve, and a third spring is provided on the telescopic rod of the third cylinder, and both ends of the third spring are fixed between the cylinder body of the third cylinder and the U-shaped seat.

[0013] Preferably, the outer bamboo node removal mechanism also includes a straightening device, and the straightening device includes a horizontally arranged fourth cylinder, the bottom of the fourth cylinder is installed on the height adjustment device, and a straightening roller is fixedly installed on the telescopic rod of the fourth cylinder; the fourth cylinder is controlled to press the outer wall of the straightening roller against one side of the annular outer bamboo node removal tool, and the height adjustment device controls the lifting and lowering of the fourth cylinder, that is, the lifting and lowering of the straightening roller straightens the shape of the outer bamboo node removal tool from a cylindrical shape to a parallelogram.

[0014] Preferably, the chordal cutting mechanism includes multiple groups of upper and lower pressure rollers and cutting blades installed on the rear side of each group of upper and lower pressure rollers, and the cutting blades are welded and fixed on the workbench; the upper and lower pressure rollers include an upper pressure roller and a lower pressure roller, an upper gear is fixedly installed on the rotating shaft of the upper pressure roller, and a lower gear is fixedly installed on the rotating shaft of the lower pressure roller, and the upper gear and the lower gear are meshed, and a transmission gear is also installed on the rotating shaft of the lower pressure roller, and the transmission gears of all the lower pressure rollers are connected by a chain, and a driven gear is also fixedly installed on the rotating shaft of the lower pressure roller located at the front, and a third motor is provided on the workbench, and a driving gear is fixedly installed on the output shaft of the third motor, and the driving gear and the driven gear are connected by a chain.

[0015] In addition, the present invention also provides a method for manufacturing a bamboo piece reconstructed basic unit, which comprises:

[0016] S1. Processing a bamboo tube with the tangential bamboo veneer preparation device to obtain multi-layer bamboo veneers that are planed layer by layer along the wall thickness direction; gluing the multi-layer bamboo veneers with a wood industry adhesive, and then assembling them in an order of vertically symmetrical density in the thickness direction to obtain a slab;

[0017] The number of layers of the bamboo tube to be processed by planing along the wall thickness direction is 5-20, the thickness of the bamboo slices is 0.5-3 mm, and the length is 200-1000 mm; the moisture content of the bamboo tube to be processed is 50%-150%; the wood industry adhesive is a phenolic resin glue with a solid content of 16%-20%, and the glue amount is 5%-8%;

[0018] S2. The slab is hot-pressed at a temperature of 110-150° C. The hot-pressing process is based on the thickness of the slab and the compression time is 30-60 seconds per 1 mm compression, to obtain a 5-20 mm thick bamboo reconstructed basic unit.

[0019] Preferably, multiple high-quality bamboo veneers located in different layers obtained from the same section of bamboo tube, including the first layer of bamboo veneers on the green bamboo side and the second layer of bamboo veneers on the green bamboo side, can be used as the surface layer of the slab, and other layers of bamboo veneers with the same length and width but poor surface quality can be used as the middle layer, and the slabs can be assembled in a manner that the density of the bamboo veneers is symmetrical in the thickness direction.

[0020] The present invention also provides a method for manufacturing an integrated board by reorganizing the basic units of the bamboo pieces, wherein the integrated board is divided into surface materials and square materials;

[0021] The bamboo slices prepared from the same section of bamboo tube are reorganized into basic units and integrated in a manner of aligned bamboo nodes. 5-30 groups of reorganized basic units are assembled in width, and 2-3 groups of reorganized basic units are integrated in thickness. The ends of adjacent layers of reorganized basic units are then glued in an interlaced manner to obtain a large-scale surface material with a flattened bamboo effect. The number of layers of bamboo slices of the reorganized basic units constituting the surface material is 3-15.

[0022] The bamboo slice reconstructed basic units prepared from the same section of bamboo tube are integrated in a manner of aligning the bamboo nodes, 2-5 groups of reconstructed basic units are assembled in width, 2-3 groups of reconstructed basic units are integrated in thickness, and then the ends of the reconstructed basic units in adjacent layers are staggered and glued to obtain integrated board square materials; the number of bamboo slice layers constituting the reconstructed basic units is 5-20 layers.

[0023] Compared with the prior art, the present invention has the following effects:

[0024] 1. The tangential bamboo slice preparation device of the present invention is an automated, continuous and efficient method for removing outer and inner bamboo nodes and planing to obtain bamboo slices with different wall thicknesses. A newly developed memory metal outer bamboo node removal blade is linked to a reciprocating mechanism to achieve efficient outer bamboo node removal. The blade surface is provided with a frosted layer to perform a preliminary roughening treatment on the green and yellow bamboo. A newly developed inner bamboo node remover is used to fix the bamboo tube and efficiently remove the inner bamboo nodes, with a high level of automation. The surface of the pressure roller of the continuous planing device is provided with a file surface structure to dually treat the green and yellow bamboo. The newly developed bamboo node removal device can also work smoothly on small-diameter bamboo and bamboo with a tapered shape with a large diameter at one end and a small diameter at the other end, and the bamboo processing surface is wide.

[0025] 2. The bamboo slice reconstructed basic unit disclosed in the present invention sequentially adjusts and stacks bamboo slices of different wall thicknesses to form a reconstructed basic unit, which improves the density gradient structure in the wall thickness direction. The layers are symmetrically laid and mutually clamped to form a more stable reconstructed unit.

[0026] 3. The bamboo integrated board square material disclosed in the present invention uses high-quality bamboo middle layer sheets obtained from the same section of bamboo tube, including two layers of bamboo green sheets as the surface layer, and other bamboo sheets of the same length and width as the middle layer. They are assembled according to density symmetry, and can obtain a flattened bamboo effect with a width 3-18 times the circumference of the same section of bamboo tube, thereby optimizing the structure and performance of bamboo materials and meeting the high-quality and high-strength requirements of furniture columns, frame structures, panels, partitions, side panels, etc.

[0027] 4. The present invention transforms bamboo from a hollow, cylindrical shape into a large-sized board. By unit segmentation and symmetrical reorganization of layers, the growth stress of the bamboo is fully released, and the structure and performance of the bamboo are optimized. It is a high-quality upgraded product of wood-based panels.

[0028] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the device for preparing tangential bamboo slices of the present invention.

[0030] Figure 2 It is a structural schematic diagram of the clamping and fixing device of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the outer bamboo node removal mechanism of the present invention.

[0032] Figure 4 It is a schematic diagram of the connection structure of the outer bamboo node removal mechanism and the straightening device of the present invention.

[0033] Figure 5 It is a structural schematic diagram of the straightening device of the present invention.

[0034] Figure 6It is a structural schematic diagram of the chord-wise cutting mechanism of the present invention.

[0035] Figure 7 It is a schematic diagram of the deformed and expanded structure of the clamping and fixing device of the present invention.

[0036] Figure 8 It is a structural schematic diagram of the clamping and fixing device of the present invention.

[0037] Figure 9 Schematic diagram of the structure of the anti-reverse device of the present invention.

[0038] Figure 10 It is a schematic diagram of the manufacturing process of the integrated board of the present invention.

[0039] FIG11( a ) is a photograph of a bamboo sheet of the present invention planed into five layers of bamboo thin sheets.

[0040] FIG11( b ) is a photograph of the bamboo slices of the present invention planed into 11 layers of bamboo slices.

[0041] FIG11( c ) is a photograph of the bamboo slices of the present invention planed into 15-layer bamboo slices.

[0042] Figure 12 This is a photo of the recombinant bamboo of the present invention.

[0043] Description of reference numerals:

[0044] 1—first cylinder; 2-1—first cylinder base; 2-2—second cylinder base; 3-1—inverted U-shaped cylinder frame; 3-2—lifting device; 4—motor mounting base; 5—first motor; 6-1—first push plate; 6-2—second push plate; 6-3—third push plate; 6-4—fourth push plate; 7-1—first spring; 7-2—second spring; 8—cutting tool for removing inner bamboo joints; 9—conical protrusion; 10—bamboo tube to be processed; 11—conical depression; 12—cutting tool for removing outer bamboo joints; 13—third cylinder; 14—L-shaped push rod; 15—fixed slider; 16—second motor; 17—active rod; 18—sliding block; 19—slideway; 20—first Second air cylinder; 21—washer; 22—third spring; 23—U-shaped seat; 24—cylindrical mounting seat; 25—fourth air cylinder; 26—fifth air cylinder; 27—straightening roller; 28—sliding rod; 29—first rotating rod; 30—second connecting rod; 31—third rotating rod; 32—fourth connecting rod; 33—fifth rotating rod; 35—resistance piece; 36—touch switch; 37—reverse block; 38—support spring; 40—planing mechanism; 50—chordal cutting mechanism; 50-1—upper pressure roller; 50-2—lower pressure roller; 50-3—cutting blade; 50-4—third motor; 60—control console; 70—workbench; 80—bin. DETAILED DESCRIPTION Example 1

[0045] like Figure 1-9 As shown, this embodiment discloses a tangential bamboo slice preparation device, comprising a workbench 70 and an inner bamboo node removal mechanism, an outer bamboo node removal mechanism, a planing mechanism 40, and a tangential cutting mechanism 50 arranged on the workbench 70 from front to back. The inner bamboo node removal mechanism, the outer bamboo node removal mechanism, and the planing mechanism are arranged above a transmission device. The inner bamboo node removal mechanism is provided with an inner bamboo node removal tool 8 for removing inner bamboo nodes of a bamboo tube 10 to be processed, and the outer bamboo node removal mechanism is provided with an outer bamboo node removal tool 12 for removing outer bamboo nodes of a bamboo tube 10 to be processed. The inner bamboo node removal mechanism, the outer bamboo node removal mechanism, and the transmission device are installed on the workbench 70. A hopper 80 is provided below the tangential cutting mechanism.

[0046] In this embodiment, the transmission device includes two parallel-moving transmission belts, and the bamboo tube 10 to be processed is placed between the two parallel-moving transmission belts for transmission.

[0047] In this embodiment, the inner bamboo node removal mechanism includes a clamping and fixing device and an inner bamboo node removal tool 8, the clamping and fixing device includes a first cylinder 1 and a second cylinder 20, the first cylinder 1 is horizontally mounted on the first cylinder base 2-1, the first cylinder base 2-1 is fixedly mounted on the inverted U-shaped cylinder frame 3-1, the inverted U-shaped cylinder frame 3-1 is mounted on the workbench 70, and is located directly above the transmission device, the telescopic rod of the first cylinder 1 is fixedly connected to the motor mounting seat 4, the motor mounting seat 4 is horizontally mounted with a first motor 5, the output shaft of the first motor 5 is fixedly connected to the rotating shaft, and the rotating shaft is close to one end of the first motor 5. The first push plate 6-1, the first spring 7-1 and the second push plate 6-2 are sequentially penetrated on the side, wherein the first push plate 6-1 is fixed on the rotating shaft, and the second push plate 6-2 is slidably sleeved on the rotating shaft, and the two ends of the first spring 7-1 are fixedly connected to the first push plate 6-1 and the second push plate 6-2 respectively. A conical protrusion 9 is connected to the end of the rotating shaft away from the first motor 5. A first opening device for opening the inner bamboo node removal tool 8 so that the blade contacts the inner wall of the bamboo tube 10 to be processed is installed on the first push plate 6-1, the second push plate 6-2 and the first motor 5. The inner bamboo node removal tool 8 is horizontally installed on the first opening device;

[0048] Specifically, the first opening device includes a first connecting rod 29, a second connecting rod 30 and a third connecting rod 31; the first connecting rod 29 is rotatably installed on the circumferential side of the first push plate 6-1, and the second connecting rod 30 is rotatably installed on the circumferential side of the second push plate 6-2. The other end of the first connecting rod 29 is slidably connected with the second connecting rod 30 and slides along the second connecting rod 30. The third connecting rod 31 is rotatably installed on the side of the rotating shaft away from the first motor 5. The third connecting rod 31 and the second connecting rod 30 are rotatably connected, and a horizontally arranged inner bamboo node removing tool 8 is also rotatably installed at the connection between the third connecting rod 31 and the second connecting rod 30;

[0049] The number of the first connecting rod 29, the second connecting rod 30 and the third connecting rod 31 are all four, and are evenly distributed around the circumference of the rotating shaft;

[0050] The second cylinder 20 is horizontally mounted on the second cylinder base 2-2, and the second cylinder base 2-2 is fixedly mounted on the lifting device 3-2, and the lifting device 3-2 is mounted on the workbench 70. The telescopic rod of the second cylinder 20 extends out of the second cylinder base 2-2 and is fixedly connected to the sliding rod 28. The sliding rod 28 is sequentially penetrated by a third push plate 6-3, a second spring 7-2 and a fourth push plate 6-4, and the third push plate 6-3 is fixed on the sliding rod 28. The fourth push plate 6-4 is slidably sleeved on the sliding rod 28. The two ends of the second spring 7-2 are respectively fixedly connected to the third push plate 6-3 and the fourth push plate 6-4. The peripheral sides of the third push plate 6-3 and the fourth push plate 6-4 are connected with a resist 35 for fixing the inner bamboo node of the bamboo tube 10 to be processed through a second opening device; the sliding rod 28 is provided with a conical recess 11 that cooperates with the conical protrusion 9 at one end away from the telescopic rod of the second cylinder;

[0051] In this embodiment, the lifting device 3-2 can be a cylinder or an electric lifting rod structure.

[0052] Specifically, the second opening device includes a fourth connecting rod 32 and a fifth connecting rod 33; the fourth connecting rod 32 is rotatably mounted on the circumference of the third push plate 6-3, and the fifth connecting rod 33 is rotatably mounted on the circumference of the fourth push plate 6-4. The other end of the fourth connecting rod 32 is slidably connected to the fifth connecting rod 33 and slides along the fifth connecting rod 33. The other end of the fifth connecting rod 33 is connected to the abutment 35;

[0053] There are four fourth connecting rods 32 and four fifth connecting rods 33, which are evenly distributed around the sliding rod 28. The abutments 35 are square in structure and four in number. The two upper abutments 35 are lighter than the two lower abutments 35, so that the abutments 35 can always remain perpendicular to the horizontal plane. The rotating connection on the second opening device is to better unfold the fourth connecting rod 32 and the fifth connecting rod 33 to clamp them outward, and to make the abutments 35 abut against the inner bamboo node of the bamboo tube 10 to be processed.

[0054] Specifically, the rotation connection between the first opening device and the second opening device can adopt a common connection method for realizing its mechanical function, such as hinge.

[0055] In this embodiment, the first cylinder 1 is located at the front side of the conveying device, and the second cylinder 20 is located at the rear side of the conveying device. Figure 1 and Figure 2 As shown in , the first opening device and the second opening device are arranged opposite to each other, as shown in Figure 2 The first cylinder 1 is located on the left side of the second cylinder 20, and the conveying device moves forward from left to right.

[0056] In this embodiment, a touch switch 36 is provided on the workbench 70. The touch switch 36 is located in the middle position on the rear side of the two parallel moving conveyor belts. When the bamboo tube 10 to be processed is transmitted to a suitable position, it presses on the touch switch 36. The touch switch 36 is electrically connected to the second cylinder 20 to control the operation of the telescopic rod of the second cylinder.

[0057] The workbench 70 is provided with two anti-reverse devices, which are installed on the workbench 70 in the middle of the transmission device. One of the anti-reverse devices is located between the clamping and fixing devices and in front of the touch switch 36, with a distance from the touch switch 36 of the length of the bamboo tube 10 to be processed. It is used to apply a fixed reverse force to the bamboo tube 10 to be processed when the second opening device is opened. The other is located in front of the planing mechanism 40. The anti-reverse device includes a reverse stopper 37 and a support spring 38. The reverse stopper 37 is tilted along the direction of operation of the transmission device and is installed on the workbench 70 in the middle of the transmission device. One end of the reverse stopper 37 is rotatably connected to the table surface of the workbench 70, and the other end of the reverse stopper 37 is supported on the workbench 70 by the support spring 38.

[0058] The outer bamboo node removal mechanism includes a third cylinder 13 and a second motor 16. The third cylinder 13 is connected to the outer bamboo node removal tool 12 through a blade holder. The outer bamboo node removal tool 12 is a shape memory alloy blade and has two forms, one is surrounding the outer side of the bamboo tube 10 to be processed, and the other is straightened into a parallelogram. The cylinder body of the third cylinder 13 is fixedly connected to the end of the vertical rod body of the L-shaped push rod 14. The horizontal rod body of the L-shaped push rod 14 is slidably set on the fixed slider 15. The fixed slider 15 is fixed on the workbench 70. The end of the horizontal rod body of the L-shaped push rod 14 is fixedly connected to the middle position of the sliding rod. The sliding rod is tilted, and a slide groove is provided on the sliding rod. A slider 18 is slidably set in the slide groove. The slider 18 is rotatably connected to one end of the active rod 17. The other end of the active rod 17 is rotatably connected to the output shaft of the second motor 16 through a transmission member. The transmission member can be a gear chain transmission method.

[0059] The blade holder includes a U-shaped seat 23 fixedly connected to the telescopic rod of the third cylinder 13, the open end of the U-shaped seat 23 is connected to the cylindrical mounting seat 24, a tool mounting sleeve is rotatably mounted on the cylindrical mounting seat 24, and the outer bamboo node removal tool 12 is fixedly mounted on the tool mounting sleeve. The cylindrical mounting seat 24 is also equipped with washers 21 located on both sides of the tool mounting sleeve. The washers 21 can reduce the wear of the tool mounting sleeve and reduce friction. The telescopic rod of the third cylinder 13 is equipped with a third spring 22, and the two ends of the third spring 22 are fixed between the cylinder body of the third cylinder 13 and the U-shaped seat 23;

[0060] In this embodiment, the third cylinder 13 can be a single-rod cylinder or a double-rod cylinder, preferably a double-rod cylinder; the two telescopic rods of the double-rod cylinder are respectively connected to two U-shaped seats 23, and the two U-shaped seats 23 are connected to an outer bamboo node removal tool 12 through a cylindrical mounting seat 24 tool mounting sleeve. By using two U-shaped seats 23 to connect an outer bamboo node removal tool 12, the tool can be set wider, and the connection position is tighter and not easily damaged.

[0061] The outer bamboo node removal mechanism also includes a straightening device, which includes a horizontally arranged fourth cylinder 25, the bottom of which is installed on a height adjustment device, which is a fifth cylinder 26, and a straightening roller 27 is fixedly installed on the telescopic rod of the fourth cylinder 25; the fourth cylinder 25 is controlled to press the outer wall of the straightening roller 27 against the inner wall of the cylindrical outer bamboo node removal tool 12, and the fifth cylinder 26 is controlled to make the fourth cylinder 25 rise and fall, that is, the straightening roller 27 straightens the shape of the outer bamboo node removal tool 12 from a cylindrical shape to a parallelogram during the lifting and lowering process.

[0062] The outer bamboo node removal tool 12 has a roughened surface on the side that contacts the green bamboo, allowing for preliminary roughening of the green surface while simultaneously removing the green bamboo. The inner bamboo node removal tool 8 has a roughened surface on the side that contacts the yellow bamboo, allowing for preliminary roughening of the yellow bamboo surface while simultaneously removing the inner bamboo nodes. The roughened structure resembles the surface structure of a file, with numerous protrusions arranged in a matrix.

[0063] The working process of removing outer bamboo nodes and inner bamboo nodes: the bamboo tube 10 to be processed is placed horizontally on the conveyor belt and moves forward. When the bamboo tube 10 to be processed is transmitted to the appropriate position, it presses on the touch switch 36, and the telescopic rod of the second cylinder 20 extends, and the second opening device is extended into the bamboo tube 10 to be processed. When the push piece 35 touches the bamboo node inside the bamboo tube 10 to be processed, the telescopic rod of the second cylinder 20 continues to extend, and the fourth connecting rod 32 and the fifth connecting rod 33 of the second opening device are opened until the square push piece 35 is pressed against the inner bamboo joint to fix one side of the bamboo tube 10 to be processed, and then the lifting device 3-2 is started to control the second cylinder 20 to rise parallel to the first cylinder 1, that is, the sliding rod 28 connected to the second cylinder 20 and the rotating shaft connected to the first cylinder are on the same line, completing the centering, and then the first cylinder 1 is started, the telescopic rod of the first cylinder 1 is extended, the first opening device is extended into the other end of the bamboo tube 10 to be processed, and the conical protrusion 9 pierces the inner bamboo joint on the side. The third connecting rod 31 first presses against The first connecting rod 29, the second connecting rod 30 and the third connecting rod 31 are extended outwards away from the side of the rotating shaft until the blade of the inner bamboo node removing tool 8 is against the inner wall of the bamboo tube 10 to be processed. Through the above operation, the bamboo tube 10 to be processed is fixed on the inner bamboo node removing mechanism. At this time, the telescopic rod of the third cylinder 13 is controlled to extend, so that the planar outer bamboo node removing tool 12 is against the outer wall of the bamboo tube 10 to be processed, and its shape changes to a shape surrounding the outer side of the bamboo tube 10 to be processed. Then the second motor 16 is turned on, and the output shaft of the second motor 16 rotates to drive the active rod 17 to rotate around the output shaft, and the slider 18 rotatably connected to the active rod 17 slides in the slide groove, thereby controlling the L-shaped push rod 14 to reciprocate in the horizontal direction, indirectly controlling the horizontal reciprocating motion of the outer bamboo node removing tool 12, removing the outer bamboo node and roughening the bamboo green surface of the bamboo tube 10 to be processed.

[0064] After the outer bamboo cutter 12 finishes its work, the telescopic rod of the third cylinder 13 is controlled to retract, and the outer bamboo cutter 12 is separated from the inner bamboo cutter 8, and then the straightening device is used to restore the shape of the outer bamboo cutter 12 to a flat shape.

[0065] When the outer bamboo node removing tool 12 finishes its work, the first motor 5 can also be started to control the inner bamboo node removing tool 8 to rotate around the inner wall of the bamboo tube 10 to be processed to remove the inner bamboo nodes, scrape the inner wall, and roughen the yellow side of the bamboo. At the same time, the first cylinder 1 is pressurized and started to continue to extend until the conical protrusion 9 of the rotating shaft extends into the conical recess 11 of the sliding rod 28 to achieve docking, and the first cylinder 1 continues to extend and the telescopic rod of the second cylinder 20 retracts. At this time, the inner bamboo node removing tool 8 completely removes the inner bamboo nodes of the bamboo tube 10 to be processed, the first motor 5 stops rotating, and the second cylinder 20 stops retracting. At this time, the staff removes the processed bamboo tube 10 to be processed, and the first cylinder 1 retracts, so that the inner bamboo node removing mechanism returns to a non-working state.

[0066] The planing mechanism is located behind the inner bamboo node removal mechanism and in front of the chordal cutting mechanism. The planing mechanism is an existing bamboo tube planing mechanism, such as a planing mechanism having multiple planing tools that are uniformly distributed along the radial direction of the bamboo tube 10 to be processed, and the planing tools are fixed on a cylindrical tool mounting plate. When the bamboo tube 10 to be processed is processed to remove the inner and outer bamboo nodes, it is transported to the planing mechanism position along the transmission device, and one side of the bamboo tube 10 to be processed is pressed against the anti-retrograde device, which includes a retrograde stopper 37 and a support spring 38. The retrograde stopper 37 is tilted along the direction of operation of the transmission device and is arranged on the workbench 70 in the middle position of the transmission device. One end of the retrograde stopper 37 is rotatably connected to the table surface of the workbench 70, and the other end of the retrograde stopper 37 is supported on the workbench 70 by the support spring 38; when the bamboo tube 10 to be processed moves forward from the transmission device, the bamboo tube 10 to be processed is pressed on the retrograde stopper 37, the support spring 38 is compressed, and the bamboo tube 10 to be processed passes smoothly. When the planing tool is to plan the bamboo tube 10 to be processed, one side of the bamboo tube 10 to be processed is pressed against the retrograde stopper 37 and will not move backward, thereby ensuring that the planing of the bamboo tube 10 to be processed is carried out smoothly. Generally, the bamboo tube is planed into 3-5 bamboo slices.

[0067] The chordal cutting mechanism includes multiple groups of upper and lower pressure rollers and a cutting blade 50-3 installed on the rear side of each group of upper and lower pressure rollers. The cutting blade 50-3 is welded and fixed to the workbench 70. The upper and lower pressure rollers include an upper pressure roller 50-1 and a lower pressure roller 50-2. An upper gear is fixedly installed on the rotating shaft of the upper pressure roller 50-1, and a lower gear is fixedly installed on the rotating shaft of the lower pressure roller 50-2. The upper gear and the lower gear are meshed. A transmission gear is also installed on the rotating shaft of the lower pressure roller 50-2. The transmission gears of all the lower pressure rollers are connected by a chain. A driven gear is also fixedly installed on the rotating shaft of the lower pressure roller 50-2 located at the front. A third motor 50-4 is provided on the workbench. A driving gear is fixedly installed on the output shaft of the third motor 50-4. The driving gear and the driven gear are connected by a chain.

[0068] In this embodiment, a control console is provided on the front side of the workbench, on which control switches for controlling the first cylinder 1, the first motor 5, the third cylinder 13, the fourth cylinder 25, the fifth cylinder 26, the second motor 16, and the third motor 50-4 are provided, as well as switches for other electrical components.

[0069] In this embodiment, the thickness of the bamboo slices is controlled by controlling the vertical distance between the cutting blade 50-3 and the lower pressing roller. The upper and lower pressing rollers are provided with multiple protrusions on their surfaces, similar to the structure of a file. These protrusions can further roughen the green and yellow bamboo, and also act as a feeder for the bamboo slices. The squeezing of the two pressing rollers draws the bamboo slices into the slicing device.

[0070] The bamboo tube enters the tangential cutting mechanism on the conveyor after the outer bamboo nodes, inner bamboo nodes and planed bamboo slices are removed in sequence. Planing starts from the green side of the bamboo and the bamboo slices are cut into multiple bamboo slices. The bamboo slices at the same thickness position of the cut bamboo slices are uniformly collected in the hopper 80. For example, the first hopper 80 collects the first planed bamboo slices to obtain bamboo thin slices, the second hopper 80 collects the second planed bamboo slices to obtain bamboo thin slices, the third hopper 80 collects the third planed bamboo slices to obtain bamboo thin slices,..., the n-1th hopper 80 collects the n-1th planed bamboo slices to obtain bamboo thin slices, and the nth hopper 80 collects the nth planed bamboo slices to obtain bamboo thin slices.

[0071] In this embodiment, n is 5-20, as shown in Figure 11 (a), a photo of bamboo slices planed into 5 layers of bamboo thin slices; as shown in Figure 11 (b), a photo of bamboo slices planed into 11 layers of bamboo thin slices; as shown in Figure 11 (c), a photo of bamboo slices planed into 5 layers of bamboo thin slices, the length of the bamboo tube 10 to be processed is 200-1000 mm; the thickness of the bamboo thin slices is 0.5-3 mm, and the length is 200-1000 mm; the moisture content of the bamboo tube to be processed is 50%-150%.

[0072] Example 2

[0073] like Figure 12 As shown, this embodiment discloses a method for manufacturing a basic unit of bamboo reconstructed by:

[0074] S1. Processing a bamboo tube using the tangential bamboo sheet preparation apparatus described in Example 1 to obtain multi-layer bamboo sheets planed layer by layer along the wall thickness direction; impregnating the multi-layer bamboo sheets with 18% solid content phenolic resin glue at a glue dosage of 7%, and then assembling the sheets in an order of vertically symmetrical density in the thickness direction to obtain slabs;

[0075] The number of layers of the bamboo tube to be processed is 5, the thickness of the bamboo slices is 3 mm, and the length is 500 mm; the moisture content of the bamboo tube to be processed is 100%;

[0076] S2. The slab is hot-pressed at a temperature of 150° C. The hot-pressing process is based on the thickness of the slab and the compression time is 50 seconds per 1 mm compression. Finally, a 12 mm thick bamboo reconstructed basic unit is obtained.

[0077] A method for manufacturing integrated boards by reorganizing the basic units of the bamboo pieces, wherein the integrated boards are divided into surface materials and square materials;

[0078] The bamboo pieces prepared from the same section of bamboo tube are reorganized into basic units and integrated in a manner of aligned bamboo nodes. 25 groups of reorganized basic units are assembled in width, and 2 groups of reorganized basic units are integrated in thickness. Then the ends of the reorganized basic units in adjacent layers are staggered and glued to obtain a large-scale surface material with a flattened bamboo effect.

[0079] The bamboo slices prepared from the same section of bamboo tube are reorganized into basic units and integrated in a manner of aligned bamboo nodes. Two groups of reorganized basic units are assembled in width, and three groups of reorganized basic units are integrated in thickness. Then, the ends of the reorganized basic units in adjacent layers are staggered and glued to obtain integrated board square materials.

[0080] The surface material and square material prepared in this embodiment were tested. The basic unit interlayer bonding strength of the surface material was 1.01 MPa, and the basic unit interlayer bonding strength of the square material was 1.16 MPa (GB / T 9846-2015 "Plywood" requires ≥0.70 MPa). The pretreatment was carried out according to Sections 4.17-5.2.1 of GB / T 17657-2013: immersion in water at 20°C for 24 hours.

[0081] Example 3

[0082] like Figure 12 As shown, this embodiment discloses a method for manufacturing a basic unit of bamboo reconstructed by:

[0083] S1. Processing a bamboo tube using the tangential bamboo sheet preparation apparatus described in Example 1 to obtain multi-layer bamboo sheets planed layer by layer along the wall thickness direction; impregnating the multi-layer bamboo sheets with a phenolic resin glue having a solid content of 16% and an amount of glue applied to a 5% level; and then assembling the sheets in an order of vertically symmetrical density in the thickness direction to obtain a first slab and a second slab;

[0084] The first slab is sliced ​​along the wall thickness direction to form 15 layers of bamboo tube to be processed, and the second slab is sliced ​​along the wall thickness direction to form 20 layers of bamboo tube to be processed. The thickness of the bamboo slices is 0.5 mm and the length is 1000 mm. The moisture content of the bamboo tube to be processed is 150%.

[0085] S2. The first slab is hot-pressed at a temperature of 110° C. The hot-pressing process adopts a hot-pressing process dominated by the slab thickness, and the time is 30 seconds for each compression of 1 mm, and finally a first bamboo piece reconstructed basic unit with a thickness of 5 mm is obtained.

[0086] The second slab is hot-pressed at a temperature of 110° C. The hot-pressing process is dominated by the thickness of the slab and the time is 30 seconds for each compression of 1 mm, and finally a second bamboo piece reconstructed basic unit with a thickness of 5 mm is obtained.

[0087] A method for manufacturing integrated boards by reorganizing the basic units of the bamboo pieces, wherein the integrated boards are divided into surface materials and square materials;

[0088] The bamboo slice reconstructed basic units prepared from the same section of bamboo tube are integrated in a manner of aligned bamboo nodes, 5 groups of first bamboo slice reconstructed basic units are assembled in width, 2 groups of first bamboo slice reconstructed basic units are integrated in thickness, and then the ends of adjacent layers of reconstructed basic units are staggered and glued to obtain a large-scale flattened bamboo effect surface material; the number of bamboo slice layers of the reconstructed basic units constituting the surface material is 15.

[0089] The bamboo slice reconstructed basic units prepared from the same section of bamboo tube are integrated in a manner of aligned bamboo nodes, 5 groups of second bamboo slice reconstructed basic units are assembled in width, 3 groups of second bamboo slice reconstructed basic units are integrated in thickness, and then the ends of adjacent layers of reconstructed basic units are staggered and glued to obtain integrated board square materials; the number of bamboo slice layers constituting the reconstructed basic units of the square materials is 20.

[0090] The surface material and square material prepared in this embodiment were tested. The basic unit interlayer bonding strength of the surface material was 0.85 MPa, and the basic unit interlayer bonding strength of the square material was 0.92 MPa (GB / T 9846-2015 "Plywood" requires ≥0.70 MPa). The pretreatment was carried out according to Sections 4.17-5.2.1 of GB / T 17657-2013: immersion in water at 20°C for 24 hours.

[0091] Example 4

[0092] like Figure 12 As shown, this embodiment discloses a method for manufacturing a basic unit of bamboo reconstructed by:

[0093] S1. Processing a bamboo tube using the tangential bamboo sheet preparation apparatus described in Example 1 to obtain multi-layer bamboo sheets planed layer by layer along the wall thickness direction; impregnating the multi-layer bamboo sheets with a phenolic resin glue having a solid content of 20% and an application amount of 8%; and then assembling the sheets in an order of vertically symmetrical density in the thickness direction to obtain a slab;

[0094] The number of layers of the bamboo tube to be processed sliced ​​along the wall thickness direction is 11, the thickness of the bamboo slice is 0.8 mm, and the length is 1000 mm; the moisture content of the bamboo tube to be processed is 50%;

[0095] S2. The slab is hot-pressed at a temperature of 150° C. The hot-pressing process is based on the thickness of the slab and the compression time is 60 seconds per 1 mm compression. Finally, a 5 mm thick bamboo reconstructed basic unit is obtained.

[0096] A method for manufacturing integrated boards by reorganizing the basic units of the bamboo pieces, wherein the integrated boards are divided into surface materials and square materials;

[0097] The bamboo slices prepared from the same section of bamboo tube are reorganized into basic units and integrated in a manner of aligned bamboo nodes. 30 groups of reorganized basic units are assembled in width, and 3 groups of reorganized basic units are integrated in thickness. Then, the ends of adjacent layers of reorganized basic units are glued in an interlaced manner to obtain a large-scale surface material with a flattened bamboo effect. The number of bamboo slice layers of the reorganized basic units constituting the surface material is 11.

[0098] The bamboo slice reconstructed basic units prepared from the same section of bamboo tube are integrated in a manner of aligned bamboo nodes. Three groups of reconstructed basic units are assembled in width, and two groups of reconstructed basic units are integrated in thickness. Then, the ends of the reconstructed basic units in adjacent layers are glued in an interlaced manner to obtain an integrated board square material. The number of bamboo slice layers constituting the reconstructed basic units of the square material is 11.

[0099] The surface material and square material prepared in this embodiment were tested. The basic unit interlayer bonding strength of the surface material was 1.05 MPa, and the basic unit interlayer bonding strength of the square material was 1.14 MPa (GB / T 9846-2015 "Plywood" requires ≥0.70 MPa). The pretreatment was carried out according to Sections 4.17-5.2.1 of GB / T 17657-2013: immersion in water at 20°C for 24 hours.

[0100] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent variation made to the above embodiment based on the essence of the invention technology shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A device for preparing tangential bamboo slices, characterized by: The invention comprises a workbench (70) and a bamboo node removal mechanism, a planing mechanism (40) and a chord-wise cutting mechanism (50) arranged on the workbench (70) from front to back, wherein the bamboo node removal mechanism comprises an outer bamboo node removal mechanism and an inner bamboo node removal mechanism, wherein the inner bamboo node removal mechanism, the outer bamboo node removal mechanism and the planing mechanism are arranged above a transmission device, wherein the inner bamboo node removal mechanism is provided with an inner bamboo node removal tool (8) for removing inner bamboo nodes of a bamboo tube (10) to be processed, and the outer bamboo node removal mechanism is provided with an outer bamboo node removal tool ((12)) for removing outer bamboo nodes of a bamboo tube (10) to be processed, wherein the inner bamboo node removal mechanism, the outer bamboo node removal mechanism and the transmission device are installed on the workbench (70), and a hopper (80) is arranged below the chord-wise cutting mechanism; The inner bamboo node removal mechanism comprises a clamping and fixing device and an inner bamboo node removal tool (8), wherein the clamping and fixing device comprises a first cylinder (1) and a second cylinder (20), wherein the first cylinder (1) is horizontally mounted on a first cylinder base (2-1), wherein the first cylinder base (2-1) is fixedly mounted on an inverted U-shaped cylinder frame (3-1), wherein the inverted U-shaped cylinder frame (3-1) is mounted on a workbench (70) and is located directly above the transmission device, wherein the telescopic rod of the first cylinder (1) is fixedly connected to a motor mounting seat (4), wherein a first motor (5) is horizontally mounted on the motor mounting seat (4), wherein an output shaft of the first motor (5) is fixedly connected to a rotating shaft, wherein a second motor (20) is sequentially penetrated on a side of the rotating shaft close to the first motor (5) A push plate (6-1), a first spring (7-1) and a second push plate (6-2), wherein the first push plate (6-1) is fixed on the rotating shaft of the first motor (5), and the second push plate (6-2) is slidably mounted on the rotating shaft. The two ends of the first spring (7-1) are respectively fixedly connected to the first push plate (6-1) and the second push plate (6-2). The end of the rotating shaft away from the first motor (5) is connected with a conical protrusion (9). The first push plate (6-1), the second push plate (6-2) and the first motor (5) are equipped with a first opening device for opening the inner bamboo node removal tool (8) so that the blade contacts the inner wall of the bamboo tube (10) to be processed. The inner bamboo node removal tool (8) is horizontally mounted on the first opening device. The second cylinder (20) is horizontally mounted on the second cylinder base (2-2), the second cylinder base (2-2) is fixedly mounted on the lifting device (3-2), the lifting device (3-2) is mounted on the workbench (70), the telescopic rod of the second cylinder (20) extends out of the second cylinder base (2-2) and is fixedly connected to the sliding rod (28), the sliding rod (28) is sequentially provided with a third push plate (6-3), a second spring (7-2) and a fourth push plate (6-4), the third push plate (6-3) is fixed on the sliding rod (28), and the fourth push plate (6-4) is slidably sleeved on the sliding rod ( 28), the two ends of the second spring (7-2) are fixedly connected to the third push plate (6-3) and the fourth push plate (6-4), respectively, and the peripheral sides of the third push plate (6-3) and the fourth push plate (6-4) are connected to a resisting member for fixing against the inner bamboo node of the bamboo tube (10) to be processed through a second opening device; the end of the sliding rod (28) away from the telescopic rod of the second cylinder (20) is provided with a conical recess (11) matched with the conical protrusion (9); the telescopic rods of the first cylinder (1) and the second cylinder (20) are arranged facing each other, and the first cylinder (1) and the second cylinder (20) are arranged in sequence along the direction of operation of the transmission device.

2. The device for preparing tangential bamboo slices according to claim 1, characterized in that: The first opening device includes a plurality of first connecting rods (29), second connecting rods (30) and third connecting rods (31); the first push plate (6-1) is rotatably mounted with the first connecting rod (29) on the circumferential side, the second push plate (6-2) is rotatably mounted with the second connecting rod (30) on the circumferential side, the other end of the first connecting rod (29) is slidably connected to the second connecting rod (30) and slides along the second connecting rod (30), the third connecting rod (31) is rotatably mounted on the side of the rotating shaft away from the first motor (5), the third connecting rod (31) and the second connecting rod (30) are rotatably connected, and a horizontally arranged inner bamboo joint removal tool (8) is also rotatably mounted at the connection between the third connecting rod (31) and the second connecting rod (30); The second opening device includes a plurality of fourth connecting rods (32) and a fifth connecting rod (33); the fourth connecting rod (32) is rotatably mounted on the circumferential side of the third push plate (6-3), and the fifth connecting rod (33) is rotatably mounted on the circumferential side of the fourth push plate (6-4); the other end of the fourth connecting rod (32) is slidably connected to the fifth connecting rod (33) and slides along the fifth connecting rod (33); and the other end of the fifth connecting rod (33) is connected to the abutment (35).

3. The device for preparing tangential bamboo slices according to claim 1, characterized in that: A touch switch (36) is provided on the workbench (70), and the touch switch (36) is electrically connected to the second cylinder (20); the touch switch (36) is located on the workbench (70) in the middle of the transmission device.

4. The device for preparing tangential bamboo slices according to claim 1, characterized in that: Two anti-retrograde devices are provided on the workbench (70), and the anti-retrograde devices are installed on the workbench (70) at the middle position of the transmission device, one of which is located between the clamping and fixing devices, and the other is located at the front side of the planing mechanism (40); the anti-retrograde device includes a retrograde block (37) and a support spring (38), and the retrograde block (37) is tilted along the direction of operation of the transmission device on the workbench (70) at the middle position of the transmission device, one end of the retrograde block (37) is rotatably connected to the table surface of the workbench (70), and the other end of the retrograde block (37) is supported on the workbench (70) by the support spring (38).

5. The device for preparing tangential bamboo slices according to claim 1, characterized in that: The bamboo node removal mechanism includes a third cylinder (13) and a second motor (16). The third cylinder (13) is connected to the bamboo node removal tool (12) through a blade holder. The bamboo node removal tool (12) is a shape memory alloy blade having two forms, one form being a cylindrical shape surrounding the outer side of the bamboo tube (10) to be processed, and the other form being a parallelogram. The cylinder body of the third cylinder (13) is fixedly connected to the end of the vertical rod body of the L-shaped push rod (14). The horizontal rod body of the L-shaped push rod (14) is slidably arranged on a fixed slider (15). The fixed slider (15) is fixed on the workbench (70). The end of the horizontal rod body of the L-shaped push rod (14) is fixedly connected to the middle position of the sliding rod. The sliding rod is tilted. A sliding groove is provided on the sliding rod. The sliding groove slides in the sliding groove. The movable member is provided with a slider (18), the slider (18) is rotatably connected to one end of the active rod (17), and the other end of the active rod (17) is rotatably connected to the output shaft of the second motor (16); the blade holder comprises a U-shaped seat (23) fixedly connected to the telescopic rod of the third cylinder (13), the open end of the U-shaped seat (23) is connected to the cylindrical mounting seat (24), a tool mounting sleeve is rotatably mounted on the cylindrical mounting seat (24), a bamboo cutting tool (12) is fixedly mounted on the tool mounting sleeve, and washers (21) located on both sides of the tool mounting sleeve are also mounted on the cylindrical mounting seat (24), a third spring (22) is mounted on the telescopic rod of the third cylinder (13), and both ends of the third spring (22) are fixed between the cylinder body of the third cylinder (13) and the U-shaped seat (23).

6. The device for preparing tangential bamboo slices according to claim 5, characterized in that: The bamboo joint removal mechanism further includes a straightening device, the straightening device including a fourth cylinder (25) arranged horizontally, the bottom of the fourth cylinder (25) being mounted on the height adjustment device, and a straightening roller (27) being fixedly mounted on the telescopic rod of the fourth cylinder (25); the fourth cylinder (25) is controlled to press the outer wall of the straightening roller (27) against one side of the annular bamboo joint removal tool ((12)), and the height adjustment device controls the fourth cylinder (25) to rise and fall, that is, the straightening roller (27) rises and falls to straighten the shape of the bamboo joint removal tool ((12)) from a cylindrical shape to a parallelogram.

7. The device for preparing tangential bamboo slices according to claim 1, characterized in that: The chordal cutting mechanism comprises a plurality of groups of upper and lower pressure rollers and a cutting blade (50-3) mounted on the rear side of each group of upper and lower pressure rollers, wherein the cutting blade (50-3) is welded and fixedly mounted on a workbench (70); the upper and lower pressure rollers comprise an upper pressure roller (50-1) and a lower pressure roller (50-2); an upper gear is fixedly mounted on the rotating shaft of the upper pressure roller (50-1), and a lower gear is fixedly mounted on the rotating shaft of the lower pressure roller (50-2); the upper gear and the lower gear are meshed; a transmission gear is also mounted on the rotating shaft of the lower pressure roller (50-2); the transmission gears of all the lower pressure rollers are connected by a chain; a driven gear is also fixedly mounted on the rotating shaft of the lower pressure roller (50-2) located at the front; a third motor (50-4) is arranged on the workbench; a driving gear is fixedly mounted on the output shaft of the third motor (50-4); and the driving gear and the driven gear are connected by a chain.

8. A method for manufacturing a basic unit of bamboo reconstructed from bamboo strips, characterized by: The method is: S1. Processing a bamboo tube using the tangential bamboo veneer preparation device described in any one of claims 1 to 7 to obtain multi-layer bamboo veneers planed layer by layer along the wall thickness direction; gluing the multi-layer bamboo veneers with a wood industry adhesive, and then assembling the veneers in an order of vertically symmetrical density in the thickness direction to obtain a slab; The number of layers of the bamboo tube to be processed by planing along the wall thickness direction is 5-20, the thickness of the bamboo slices is 0.5-3 mm, and the length is 200-1000 mm; the moisture content of the bamboo tube to be processed is 50%-150%; the wood industry adhesive is a phenolic resin glue with a solid content of 16%-20%, and the glue amount is 5%-8%; S2. The slab is hot-pressed at a temperature of 110-150° C. The hot-pressing process is based on the thickness of the slab and the compression time is 30-60 seconds per 1 mm compression, to obtain a 5-20 mm thick bamboo reconstructed basic unit.

9. A method for manufacturing integrated boards by reassembling the basic units of bamboo strips according to claim 8, characterized in that: The integrated board is divided into surface material and square material; The bamboo slices prepared from the same section of bamboo tube are reconstructed into basic units in a manner of aligning the bamboo nodes, with 5-30 groups of reconstructed basic units being assembled in width, and 2-3 groups of reconstructed basic units being assembled in thickness, and then the ends of adjacent layers of reconstructed basic units are staggered and glued together to obtain a large-scale flattened bamboo effect surface material; the number of layers of bamboo slices constituting the said surface material is 3-15; The bamboo slice reconstructed basic units prepared from the same section of bamboo tube are integrated in a manner of aligning the bamboo nodes, 2-5 groups of reconstructed basic units are assembled in width, 2-3 groups of reconstructed basic units are integrated in thickness, and then the ends of the reconstructed basic units in adjacent layers are staggered and glued to obtain integrated board square materials; the number of bamboo slice layers constituting the reconstructed basic units is 5-20 layers.

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