Method for processing small-diameter thinning timber

Abstract

The present application relates to the technical field of small-diameter tending felled timber processing, and discloses a method for processing small-diameter tending felled timber into a curtain, comprising the following steps: S1, placing the small-diameter tending felled timber into a roller press saw cutting and splitting device; S2, adjusting the saw blade spacing of the device so that the thickness of the split single board is 3-15 mm; S3, placing the split single board into a fine roller pressing and loosening device; S4, loosening the single board into bundle-shaped wood fibers arranged longitudinally and connected laterally by adjusting the roller gap and loosening tooth specifications of the device; and S5, performing infrared irradiation treatment on the loosened bundle-shaped wood fibers. By mixing bundle-shaped wood fibers of different levels, a mixture with multi-level fibers is obtained, effectively solving the problem that rotary-cut single boards have requirements for the diameter level of logs, most small-diameter tending felled timber does not meet the requirements of rotary cutting, rotary-cut single boards will damage the texture of wood fibers, and defects such as knots and cracks cannot be removed, and only post-repair can be used, affecting the appearance and mechanical properties of the manufactured reconstituted wood products.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small-diameter tending felled timber processing, in particular to a method for processing small-diameter tending felled timber into a curtain fabric. BACKGROUND

[0002] Due to the short growth cycle, poor material quality, low strength, small diameter and other shortcomings of small-diameter tending felled timber, the utilization mode is subject to certain limitations. At present, the development and utilization of small-diameter timber at home and abroad generally focuses on two aspects. One is the utilization of solid wood, which is peeled and sawn into lumber for direct application in construction, interior decoration and furniture components. The other is to process into various wood-based panel products through decomposition and combination.

[0003] Australian researchers use small-diameter wood and branch material as raw materials to directly crush and decompose them using processing equipment to form bundle-shaped wood fibers arranged longitudinally and connected transversely, and then prepare reconstituted wood through hot pressing and gluing. Directly crushing small-diameter wood requires high crushing equipment, and small-diameter wood needs to be softened by water and heat, which is energy-consuming and not environmentally friendly. In addition, the crushing effect is uneven and the crushing stress is difficult to eliminate.

[0004] Based on this, domestic researchers use rotary-cut veneer as raw material to achieve controllable fiber separation through crushing treatment and prepare high-performance reconstituted wood, effectively solving the key problems of uncontrolled moisture content and stress concentration caused by uneven decomposition of traditional reconstituted wood bundle units. However, rotary-cut veneer has requirements for the diameter of the log, with a diameter of 4-13 cm, and the commonly used rotary-cut equipment requires a diameter of 8 cm or more, so most small-diameter tending felled timber does not meet the requirements for rotary cutting. In addition, rotary-cut veneer will damage the wood fiber texture, and cannot remove defects such as knots and cracks, which can only be repaired later, affecting the appearance and mechanical properties of the manufactured reconstituted wood products. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a method for processing small-diameter tending felled timber into a curtain fabric, which solves the problem that most small-diameter tending felled timber does not meet the requirements for rotary cutting, and rotary-cut veneer will damage the wood fiber texture and cannot remove defects such as knots and cracks, which can only be repaired later, affecting the appearance and mechanical properties of the manufactured reconstituted wood products.

[0006] To achieve the above purpose, the present application is implemented by the following technical scheme: a method for processing small-diameter tending felled timber into a curtain fabric, comprising the following steps:

[0007] S1, placing the small-diameter tending felled timber into a roll-saw cutting and splitting device;

[0008] S2, adjusting the saw blade spacing of the device so that the thickness of the split veneer is 3-15 mm;

[0009] S3, put the split veneer into a fine crushing and refining device;

[0010] S4, adjust the roller gap and the specification of the refining teeth of the device to refine the veneer into bundle-shaped wood fibers arranged longitudinally and connected laterally;

[0011] S5, perform infrared irradiation treatment on the refined bundle-shaped wood fibers to improve their physical properties;

[0012] S6, perform grading treatment on the bundle-shaped wood fibers after irradiation treatment, and divide them into different grades according to fiber length and diameter;

[0013] S7, mix the graded bundle-shaped wood fibers to form a mixture with multiple grades of fibers;

[0014] S8, glue the mixture to form reconstituted wood.

[0015] Preferably, the S1 step specifically includes the following steps:

[0016] S1.1, select small-diameter managed timber with a diameter of 5-20 cm;

[0017] S1.2, perform preliminary cleaning to remove bark and external impurities;

[0018] S1.3, preheat the timber to a temperature of 50-100°C to facilitate subsequent splitting;

[0019] S1.4, put the timber after pre-treatment for 1-3 hours into a roller saw cutting and splitting device.

[0020] Preferably, the S2 step specifically includes the following steps:

[0021] S2.1, adjust the adjustment knob on the device according to the desired veneer thickness;

[0022] S2.2, check the sharpness of the saw blade and replace or grind it if necessary;

[0023] S2.3, start the device and perform splitting, and observe whether the veneer thickness meets the requirements;

[0024] S2.4, continue to fine-tune the saw blade spacing as needed.

[0025] Preferably, the S3 step specifically includes the following steps:

[0026] S3.1, arrange the split veneer properly and remove excess debris, with a length of 1-3 m and a width of 0.2-0.5 m;

[0027] S3.2, put the prepared veneer into the fine crushing and refining device, control the running speed at 50-200 rpm;

[0028] S3.3, start the device, and observe whether the veneer is completely refined.

[0029] Preferably, the S4 step specifically comprises the following steps:

[0030] S4.1, adjust the adjusting knob on the device according to the required bundle-shaped wood fiber specifications;

[0031] S4.2, check the refining teeth of the crushing roller, and replace or grind them if necessary;

[0032] S4.3, start the device, refine, and observe whether the bundle-shaped wood fiber meets the requirements;

[0033] S4.4, continue to fine-tune the roller gap and refining tooth specifications as needed.

[0034] Preferably, the S5 step specifically comprises the following steps:

[0035] S5.1, adjust the irradiation intensity and time of the infrared irradiation device;

[0036] S5.2, put the bundle-shaped wood fiber into the device for infrared irradiation treatment;

[0037] S5.3, periodically check the temperature and humidity of the fiber during the treatment process;

[0038] S5.4, after the treatment is completed, take out the bundle-shaped wood fiber and cool it.

[0039] Preferably, the irradiation intensity in the S5.1 step is 1000-2000 W / m 2 , the irradiation time is 10-30 min, the fiber temperature in the S5.3 step should be maintained at 50-100℃ during irradiation, and the fiber humidity should be maintained at 5%-15% during irradiation.

[0040] Preferably, the S6 step specifically comprises the following steps:

[0041] S6.1, use the grading device to preliminarily grade the bundle-shaped wood fiber after irradiation treatment;

[0042] S6.2, further divide it into different levels according to the fiber length of 3-10 cm and diameter of 0.5-2 mm;

[0043] S6.3, perform secondary grading, and classify according to the strength and elasticity of the fiber;

[0044] S6.4, packing the classified fiber and marking the grade.

[0045] 10. Preferably, the S7 step specifically comprises the following steps:

[0046] S7.1, placing the bundle-shaped wood fibers of different grades into a stirring device;

[0047] S7.2, adding 5%-15% of water and other additives by mass percentage to improve mixing effect;

[0048] S7.3, starting the device to stir at a speed of 50-200 rpm, and observing whether the mixture is uniform;

[0049] S7.4, after stirring is completed, taking out the mixture to perform pre-drying treatment at a temperature of 50-100℃ for 1-3h.

[0050] Preferably, the S8 step specifically comprises the following steps:

[0051] S8.1, placing the mixture into a hot-pressing device;

[0052] S8.2, adding 10%-30% of phenolic resin adhesive by mass percentage and uniformly mixing;

[0053] S8.3, adjusting the temperature of the device to be between 140-200℃, the pressure to be between 1-5MPa, and the time to be between 10-30min;

[0054] S8.4, starting the device to perform hot-pressing;

[0055] S8.5, after hot-pressing is completed, taking out the reconstituted wood to perform cooling;

[0056] S8.6, performing post-treatment, such as polishing and cutting, on the cooled reconstituted wood;

[0057] S8.7, performing quality inspection on the final reconstituted wood.

[0058] The present application provides a method for processing small-diameter thinned wood. The method has the following advantages:

[0059] 1. The present application improves the physical properties of bundle-shaped wood fibers through the processes of fabric treatment and infrared irradiation, improves the performance of reconstituted wood, and improves the quality of reconstituted wood through classification and mixing.

[0060] 2、The present application effectively solves the problem that rotary cut veneer requires log diameter, most small-diameter tending felled timber does not meet the rotary cutting requirements, rotary cut veneer will damage the wood fiber texture, and cannot remove defects such as knots and cracks, and can only be repaired later, affecting the appearance and mechanical properties of the manufactured reconstituted wood product, effectively improving the quality of the reconstituted wood, and adding different additives to manufacture reconstituted wood with different strength, hardness and durability, and provide diverse product production.

[0061] 3、The present application effectively utilizes small-diameter tending felled timber, converts low-value wood into higher-value reconstituted wood products, improves production efficiency while reducing production costs per unit product through effective resource utilization and efficient production processes. BRIEF DESCRIPTION OF DRAWINGS

[0062] Figure 1 The flowchart of the present application is shown in the figure;

[0063] Figure 2 The flowchart of the present application is shown in the figure;

[0064] Figure 3 The perspective view of the roller saw cutting and splitting device of the present application is shown in the figure;

[0065] Figure 4 The perspective view of the roller saw cutting and splitting device of the present application is shown in the figure;

[0066] Figure 5 The structure diagram of the transmission shaft driving the saw frame to move up and down is shown in the figure;

[0067] Figure 6 The perspective view of the fine rolling and splitting device of the present application is shown in the figure;

[0068] Figure 7 The structure diagram of the loosening roller of the present application is shown in the figure. DETAILED DESCRIPTION

[0069] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0070] Please refer to the accompanying Figure 1 -attached Figure 2 The present application provides a method for processing small-diameter tending felled timber into cord fabric, comprising the following steps:

[0071] S1, the small-diameter tending felled timber is put into the roller saw cutting and splitting device;

[0072] S2, adjust the saw blade spacing of the device, so that the thickness of the split veneer is 3-15mm;

[0073] S3, the split veneer is put into a fine rolling and loosening device;

[0074] S4, by adjusting the roll gap of the device and the specification of the loosening tooth, the veneer is loosened into longitudinally arranged and transversely connected bundle-shaped wood fibers;

[0075] S5, the bundle-shaped wood fibers after loosening are treated by infrared radiation to improve their physical properties;

[0076] S6, the bundle-shaped wood fibers after irradiation treatment are classified according to fiber length and diameter;

[0077] S7, the classified bundle-shaped wood fibers are mixed to form a mixture with multiple levels of fibers;

[0078] S8, the mixture is glued to form reconstituted wood.

[0079] Specifically, by the above method, the small-diameter tending felled timber is cut into 3-15mm thick veneer by the roller saw cutting and splitting device, and then the veneer is loosened by the fine rolling and loosening device to form a loose but not scattered wood bundle. The veneer cut by the roller saw cutting and splitting device can effectively retain the fibers and texture of the wood itself, and the sawn veneer has the advantages of small stress and less deformation such as warping compared with the rotary cut veneer. By setting different number of loosening rollers, different specification loosening teeth of loosening rollers and other conditions, the fine rolling and loosening device is used to loosen the split thin veneer, and the unit controllable fine loosening technology breaks through the traditional loosening technology which takes small-diameter wood as a unit, so that a directional linear cracking fiberized reconstituted unit with uniform shape and uniform surface density distribution is formed, thereby effectively solving the problems of wood bundle easy to break, uneven density of loosened veneer, uneven penetration of adhesive and stress concentration.

[0080] Please refer to the attached Figure 3 -attached Figure 4 , the S1 step specifically includes the following steps:

[0081] S1.1, select small-diameter tending felled timber with a diameter of 5-20cm;

[0082] S1.2, preliminary cleaning to remove bark and external impurities;

[0083] S1.3, preheat the felled timber to a temperature of 50-100℃ to facilitate subsequent splitting;

[0084] S1.4, the felled timber after pre-treatment for 1-3h is put into a roller saw cutting and splitting device.

[0085] Specifically, in the S1.1 step, the diameter of the small-diameter tending timber is in the range of 5-20 cm, which not only meets the needs of subsequent processing, but also effectively utilizes resources and avoids waste of large-diameter wood. The processing in the S1.2 step can improve the efficiency and quality of subsequent processing, and the removal of bark and external impurities through cleaning can reduce interference in the subsequent processing process, improve the quality of the reconstituted wood, and also protect the processing equipment and prolong its service life. The preheating treatment in the S1.3 step can change the physical state of the wood, making it more suitable for subsequent splitting processing, relaxing the fibers of the wood and reducing its hardness, which makes the subsequent splitting more smooth and reduces the energy consumption in the splitting process.

[0086] Please refer to the accompanying drawings Figure 5 , the S2 step specifically includes the following steps:

[0087] S2.1, adjust the adjusting knob on the equipment according to the required veneer thickness;

[0088] S2.2, check the sharpness of the saw blade and replace or grind it if necessary;

[0089] S2.3, start the equipment, perform splitting, and observe whether the veneer thickness meets the requirements;

[0090] S2.4, continue to fine-tune the saw blade spacing as needed.

[0091] Specifically, in the above steps, the equipment is started, and the saw frame is driven to move up and down by the transmission shaft Figure 5 The saw frame cuts the log into thin boards, the number of saw blades in the saw frame can be increased or decreased, and the position between the saw blades can be adjusted by adjusting the thickness of the spacer between the two saw blades, the thickness of the spacer is between 3mm-5mm, the thickness of the thin board can be controlled by the thickness of the spacer or the number of spacers between the two saw blades, and different density and different material of the log can be cut into thin boards of different thicknesses by adjusting the gap between the saw blades, which is convenient for fine grinding and pressing device to grind and press. The above S2 step effectively converts the bundle-shaped wood fibers into veneers through equipment adjustment, saw blade maintenance and splitting operation, providing high-quality raw materials for subsequent reconstituted wood manufacturing. At the same time, this step also realizes efficient use of equipment and improves production efficiency.

[0092] Please refer to the accompanying drawings Figure 6 , the S3 step specifically includes the following steps:

[0093] S3.1, arrange the split veneers and remove excess debris, the length of the veneer is 1-3m, and the width is 0.2-0.5m;

[0094] S3.2, put the prepared veneer into the fine crushing and refining device, control the running speed at 50-200 rpm;

[0095] S3.3, start the device and observe whether the veneer is completely refined.

[0096] Specifically, in the fine crushing and refining device in the above steps, there are four pairs of upper and lower symmetrical transmission rollers (pressure rollers + refining rollers), which realize the controllable fine refining of the thin plate by adjusting the upper and lower gap of the transmission roller and the specification of the refining teeth on the refining roller, so as to obtain high-quality cord-like thin plate, which is convenient for the next step of producing high-performance reconstituted wood.

[0097] Please refer to the attached Figure 7 , the S4 step specifically includes the following steps:

[0098] S4.1, adjust the adjusting knob on the device according to the required specification of the bundle-shaped wood fiber;

[0099] S4.2, check the refining teeth of the crushing roller and replace or grind it if necessary;

[0100] S4.3, start the device and refine, and observe whether the bundle-shaped wood fiber meets the requirements;

[0101] S4.4, continue to fine-tune the roller gap and refining tooth specification according to the requirements.

[0102] Specifically, in the above S4 step, through the adjustment of the device, the maintenance of the crushing roller and the refining operation, the wood is effectively converted into bundle-shaped wood fiber, which provides high-quality raw materials for the subsequent reconstituted wood manufacturing. At the same time, this step also realizes the efficient use of the device and improves the production efficiency.

[0103] The S5 step specifically includes the following steps:

[0104] S5.1, adjust the irradiation intensity and time of the infrared irradiation device;

[0105] S5.2, put the bundle-shaped wood fiber into the device and perform infrared irradiation treatment;

[0106] S5.3, during the treatment process, regularly check the temperature and humidity of the fiber;

[0107] S5.4, after the treatment is completed, take out the bundle-shaped wood fiber and cool it.

[0108] Specifically,

[0109] The irradiation intensity in the S5.1 step is 1000-2000 W / m 2The irradiation time is 10-30 min, the fiber temperature in the S5.3 step should be maintained at 50-100°C during the irradiation process, and the fiber humidity should be maintained at 5%-15% during the irradiation process.

[0110] The S6 step specifically includes the following steps:

[0111] S6.1, using a grading device, the bundle-shaped wood fibers after irradiation treatment are preliminarily graded;

[0112] S6.2, according to the fiber length of 3-10 cm and the diameter of 0.5-2 mm, it is further divided into different levels;

[0113] S6.3, secondary grading, classification according to the strength and elasticity of the fiber;

[0114] S6.4, the graded fiber is packaged and labeled.

[0115] Specifically, in the S5.1 step, the intensity and time of the infrared irradiation are adjusted mainly according to the characteristics and processing requirements of the bundle-shaped wood fibers. Since the intensity and time of the infrared irradiation will directly affect the processing effect, adjusting the intensity and time of the infrared irradiation is a key step. In the S5.2 step, the physical and chemical properties of the bundle-shaped wood fibers are changed by using the infrared irradiation to improve their performance in the reconstituted wood. In the S5.3 step, by monitoring the processing, it is ensured that it is carried out under suitable conditions, avoiding the influence of changes in temperature and humidity on the effect of the infrared irradiation. In the S5.4 step, the cooling process can prevent possible damage to the bundle-shaped wood fibers due to excessive temperature.

[0116] The S7 step specifically includes the following steps:

[0117] S7.1, the bundle-shaped wood fibers of different levels are put into a stirring device;

[0118] S7.2, 5%-15% of water and other additives are added to improve the mixing effect;

[0119] S7.3, start the device and stir at a speed of 50-200 rpm, and observe whether the mixture is uniform;

[0120] S7.4, after the stirring is completed, the mixture is taken out and subjected to pre-drying treatment at a temperature of 50-100°C for 1-3h.

[0121] Specifically, in step S7.1, different levels of bundle-shaped wood fibers are prepared to optimize the performance of the reconstituted wood. Mixing different levels of bundle-shaped wood fibers can improve the overall performance of the reconstituted wood, including strength, flexibility and durability. In step S7.2, water and other additives are added to improve the mixing effect of the bundle-shaped wood fibers. Water can help the wood fibers mix better, while other additives such as adhesives, protection, etc. can improve the performance of the reconstituted wood. In step S7.3, the stirring speed is controlled and observed to ensure uniform mixing of the wood fibers. In step S7.4, pre-drying can reduce the moisture content of the mixture, making it more suitable for the subsequent pressing step.

[0122] The S8 step specifically includes the following steps:

[0123] S8.1, placing the mixture into a hot pressing device;

[0124] S8.2, adding a phenolic resin adhesive with a mass percentage of 10%-30%, and uniformly mixing;

[0125] S8.3, adjusting the temperature of the device to be between 140-200°C, the pressure to be between 1-5MPa, and the time to be between 10-30min;

[0126] S8.4, starting the device and performing hot pressing;

[0127] S8.5, after hot pressing is completed, the reconstituted wood is removed and cooled;

[0128] S8.6, post-processing the cooled reconstituted wood, such as sanding, cutting;

[0129] S8.7, quality inspection of the final reconstituted wood.

[0130] Specifically, in step S8.1, the loose fiber mixture is converted into a solid board. In step S8.2, phenolic resin adhesive is added to ensure that the wood fiber mixture can be bonded together during hot pressing to form a solid board. In step S8.3, the parameters of the hot pressing device are controlled to ensure the quality and performance of the reconstituted wood board. In step S8.4, during hot pressing, the adhesive will solidify under high temperature and pressure, causing the wood fibers to bond into a solid board. In step S8.5, cooling is performed to ensure dimensional stability and prevent subsequent deformation of the board.

[0131] Example 1:

[0132] S1.1: Select small-diameter thinned timber with a diameter of 5cm;

[0133] S1.2: Perform preliminary cleaning to remove bark and external impurities;

[0134] S1.3: Preheat the timber at a temperature of 50°C to facilitate subsequent splitting;

[0135] S1.4: Place the preheated timber into the roller saw cutting and splitting device after 1 hour of preheating;

[0136] S2.1: Adjust the adjustment knob on the device to set the veneer thickness to 3mm according to the required veneer thickness;

[0137] S2.2: Check the sharpness of the saw blade and replace it if found to be dull;

[0138] S2.3: Start the device and perform the splitting, observing that the veneer thickness meets the requirements;

[0139] S2.4: The veneer thickness meets the requirements and there is no need to fine-tune the saw blade spacing;

[0140] S3.1: Arrange the split veneer, removing excess debris, with a length of 1m and a width of 0.2m;

[0141] S3.2: Place the arranged veneer into the fine milling and refining device, controlling the operating speed at 50rpm;

[0142] S3.3: Start the device and observe that the veneer is completely refined;

[0143] S4.1: Adjust the adjustment knob on the device to set the length of the bundle-shaped wood fibers to 3cm and the diameter to 0.5mm according to the required bundle-shaped wood fiber specifications;

[0144] S4.2: Check the refining teeth of the milling roller and replace them if found to be dull;

[0145] S4.3: Start the device and perform the refining, observing that the bundle-shaped wood fibers meet the requirements;

[0146] S4.4: The bundle-shaped wood fibers meet the requirements and there is no need to fine-tune the roller gap and refining tooth specifications;

[0147] S5.1: Adjust the irradiation intensity of the infrared irradiation device to 1000W / m 2 , and the irradiation time to 10 minutes;

[0148] S5.2: Place the bundle-shaped wood fibers into the device for infrared irradiation treatment;

[0149] S5.3: During the treatment process, regularly check the temperature and humidity of the fibers, maintaining them at 50°C and 5%;

[0150] S5.4: After the treatment is complete, remove the bundle-shaped wood fibers and cool them;

[0151] S6.1: Using a grading device, the bundle-shaped wood fibers after irradiation treatment are preliminarily graded;

[0152] S6.2: According to the fiber length of 3-10 cm and the diameter of 0.5-2 mm, it is further divided into different grades;

[0153] S6.3: Secondary grading is performed, and classification is performed according to the strength and elasticity of the fibers;

[0154] S6.4: The graded fibers are packaged and labeled with the grade;

[0155] S7.1: The bundle-shaped wood fibers of different grades are placed in a stirring device;

[0156] S7.2: 5% of water and other additives by mass percentage are added to improve the mixing effect;

[0157] S7.3: Start the device and stir at a speed of 50 rpm, and observe whether the mixture is uniform;

[0158] S7.4: After stirring is completed, the mixture is taken out and subjected to pre-drying treatment at a temperature of 50°C for 1 hour;

[0159] S8.1: The mixture is placed in a hot-pressing device;

[0160] S8.2: 10% of phenolic resin adhesive by mass percentage is added and uniformly mixed;

[0161] S8.3: The temperature of the device is adjusted to be between 140°C, the pressure is adjusted to be between 1 MPa, and the time is adjusted to be between 10 minutes;

[0162] S8.4: Start the device and perform hot pressing;

[0163] S8.5: After hot pressing is completed, the reconstituted wood is taken out and cooled;

[0164] S8.6: The cooled reconstituted wood is subjected to post-processing, such as sanding and cutting;

[0165] S8.7: The final reconstituted wood is subjected to quality inspection.

[0166] Example 1 Summary: This example is a baseline implementation with all parameters set to recommended middle values. This example can successfully produce reconstituted wood with relatively average performance and cost.

[0167] Example 2:

[0168] S1.1: Select small-diameter managed timber with a diameter of 5 cm;

[0169] S1.2: Perform preliminary cleaning to remove bark and external impurities;

[0170] S1.3: Preheat the felled wood to a temperature of 50°C to facilitate subsequent splitting;

[0171] S1.4: Place the preheated felled wood into the roller saw cutting and splitting equipment after 1 hour of preheating;

[0172] S2.1: Adjust the adjustment knob on the equipment according to the desired veneer thickness, setting the veneer thickness to 3mm;

[0173] S2.2: Check the sharpness of the saw blade and replace it if found to be dull;

[0174] S2.3: Start the equipment and perform the splitting, observing that the veneer thickness meets the requirements;

[0175] S2.4: The veneer thickness meets the requirements and there is no need to fine-tune the saw blade spacing;

[0176] S3.1: Arrange the split veneer, removing excess debris, with a length of 1m and a width of 0.2m;

[0177] S3.2: Place the arranged veneer into the fine milling and defibrillation device, controlling the operating speed to 50rpm;

[0178] S3.3: Start the equipment and observe that the veneer is completely defibrated;

[0179] S4.1: Adjust the adjustment knob on the device according to the required bundle-shaped wood fiber specifications, setting the bundle-shaped wood fiber length to 3cm and the diameter to 0.5mm;

[0180] S4.2: Check the defibration teeth of the milling roller and replace them if found to be dull;

[0181] S4.3: Start the equipment and perform the defibration, observing that the bundle-shaped wood fibers meet the requirements;

[0182] S4.4: The bundle-shaped wood fibers meet the requirements and there is no need to fine-tune the roller gap and defibration tooth specifications;

[0183] S5.1: Adjust the irradiation intensity of the infrared irradiation device to 1000W / m 2 , and the irradiation time to 10 minutes;

[0184] S5.2: Place the bundle-shaped wood fibers into the device for infrared irradiation treatment;

[0185] S5.3: During the treatment process, periodically check the temperature and humidity of the fibers, maintaining them at 50°C and 5%;

[0186] S5.4: After the treatment is completed, the bundle-shaped wood fibers are removed and cooled;

[0187] S6.1: The bundle-shaped wood fibers after irradiation treatment are preliminarily classified using a classification device;

[0188] S6.2: The fibers are further classified into different grades according to their length of 3-10 cm and diameter of 0.5-2 mm;

[0189] S6.3: Secondary classification is performed according to the strength and elasticity of the fibers;

[0190] S6.4: The classified fibers are packaged and labeled with the grade;

[0191] S7.1: The bundle-shaped wood fibers of different grades are placed into a stirring device;

[0192] S7.2: Water and other additives are added in an amount of 5% by mass to improve the mixing effect;

[0193] S7.3: The device is started and stirred at a speed of 50 rpm, and the uniformity of the mixture is observed;

[0194] S7.4: After stirring is completed, the mixture is removed and subjected to pre-drying treatment at a temperature of 50°C for 1 h;

[0195] S8.1: The mixture is placed into a hot-pressing device;

[0196] S8.2: Phenolic resin adhesive is added in an amount of 10% by mass and uniformly mixed;

[0197] S8.3: The temperature of the device is adjusted to be between 140°C, the pressure is adjusted to be between 1 MPa, and the time is adjusted to be between 10 min;

[0198] S8.4: The device is started and hot-pressed;

[0199] S8.5: After hot-pressing is completed, the reconstituted wood is removed and cooled;

[0200] S8.6: The cooled reconstituted wood is subjected to post-treatment such as sanding and cutting;

[0201] S8.7: The final reconstituted wood is subjected to quality inspection.

[0202] Summary of Example 2: This example is a more resource- and energy-saving implementation, with all parameters set at the recommended minimum values. Although this may reduce the performance of the product, it can greatly reduce production costs and energy consumption. Experimental results show that this example can successfully manufacture reconstituted wood with slightly inferior performance but lower cost.

[0203] Example 3:

[0204] S1.1: Select small-diameter thinning timber with a diameter of 20 cm;

[0205] S1.2: Perform preliminary cleaning to remove bark and external impurities;

[0206] S1.3: Preheat the timber to a temperature of 100°C to facilitate subsequent splitting;

[0207] S1.4: Place the preheated timber for 3 hours into the roller saw cutting and splitting equipment;

[0208] S2.1: Adjust the adjustment knob on the equipment according to the desired veneer thickness, setting the veneer thickness to 15 mm;

[0209] S2.2: Check the sharpness of the saw blade and replace it if found dull;

[0210] S2.3: Start the equipment and perform the splitting, observing that the veneer thickness meets the requirements;

[0211] S2.4: The veneer thickness meets the requirements and does not require fine-tuning of the saw blade spacing;

[0212] S3.1: Arrange the split veneer, removing excess debris, with a length of 3 m and a width of 0.5 m;

[0213] S3.2: Place the arranged veneer into the fine rolling and defibrillation device, controlling the operating speed at 200 rpm;

[0214] S3.3: Start the equipment and observe that the veneer is completely defibrated;

[0215] S4.1: Adjust the adjustment knob on the device according to the required bundle-shaped wood fiber specifications, setting the bundle-shaped wood fiber length to 10 cm and the diameter to 2 mm;

[0216] S4.2: Check the defibration teeth of the rolling roller and replace them if found dull;

[0217] S4.3: Start the equipment and perform the defibration, observing that the bundle-shaped wood fibers meet the requirements;

[0218] S4.4: The bundle-shaped wood fibers meet the requirements and do not require fine-tuning of the roller gap and defibration tooth specifications;

[0219] S5.1: Adjust the infrared radiation device to an irradiation intensity of 2000 W / m 2 for 30 minutes;

[0220] S5.2: Place the bundle-shaped wood fibers into the device for infrared radiation treatment;

[0221] S5.3: During the process, the temperature and humidity of the fibers are checked regularly and maintained at 100°C and 15%;

[0222] S5.4: After the process is completed, the bundle-shaped wood fibers are removed and cooled;

[0223] S6.1: The bundle-shaped wood fibers after irradiation treatment are preliminarily classified using a grading device;

[0224] S6.2: According to the fiber length of 3-10 cm and diameter of 0.5-2 mm, it is further classified into different grades;

[0225] S6.3: Secondary classification is performed according to the strength and elasticity of the fibers;

[0226] S6.4: The classified fibers are packaged and labeled with the grade;

[0227] S7.1: The bundle-shaped wood fibers of different grades are placed in a stirring device;

[0228] S7.2: Water and other additives are added at a mass percentage of 15% to improve mixing;

[0229] S7.3: The device is started and stirred at a speed of 200 rpm, and the uniformity of the mixture is observed;

[0230] S7.4: After stirring is completed, the mixture is removed and subjected to pre-drying treatment at a temperature of 100°C for 3h;

[0231] S8.1: The mixture is placed in a hot-pressing device;

[0232] S8.2: Phenolic resin adhesive is added at a mass percentage of 30% and mixed evenly;

[0233] S8.3: The temperature of the device is adjusted to between 200°C, the pressure is adjusted to between 5MPa, and the time is adjusted to between 30min;

[0234] S8.4: The device is started and hot-pressed;

[0235] S8.5: After hot-pressing is completed, the reconstituted wood is removed and cooled;

[0236] S8.6: The cooled reconstituted wood is subjected to post-processing such as sanding and cutting;

[0237] S8.7: The final reconstituted wood is subjected to quality inspection.

[0238] Example 3 Summary: This example is a performance-maximizing implementation, with all parameters set at the recommended maximum. While this can increase production costs and energy consumption, it can greatly improve product performance. Experimental results show that this example can successfully produce reconstituted wood with optimal performance but higher cost.

[0239] Example 4:

[0240] S1.1: Select small-diameter thinned timber with a diameter of 10 cm;

[0241] S1.2: Perform preliminary cleaning to remove bark and external impurities;

[0242] S1.3: Preheat the timber to a temperature of 75°C to facilitate subsequent splitting;

[0243] S1.4: Place the preheated timber into the roller saw cutting and splitting equipment after 2 hours of preheating;

[0244] S2.1: Adjust the adjustment knob on the equipment according to the desired veneer thickness, setting the veneer thickness to 6 mm;

[0245] S2.2: Check the sharpness of the saw blade and find that it is dull, so replace it;

[0246] S2.3: Start the equipment and perform splitting, observing that the veneer thickness meets the requirements;

[0247] S2.4: The veneer thickness meets the requirements and does not need to be fine-tuned for the saw blade spacing;

[0248] S3.1: Arrange the split veneer and remove excess debris, with the veneer length being 2 m and the width being 0.35 m;

[0249] S3.2: Place the arranged veneer into the fine rolling and defibrillation device, controlling the operating speed to be 125 rpm;

[0250] S3.3: Start the equipment and observe that the veneer is completely defibrated;

[0251] S4.1: Adjust the adjustment knob on the device according to the required bundle-shaped wood fiber specifications, setting the bundle-shaped wood fiber length to 6.5 cm and the diameter to 1.25 mm;

[0252] S4.2: Check the defibration teeth of the rolling roller and find that they are dull, so replace them;

[0253] S4.3: Start the equipment and perform defibration, observing that the bundle-shaped wood fibers meet the requirements;

[0254] S4.4: The bundle-shaped wood fibers meet the requirements and do not need to be fine-tuned for the roller gap and defibration tooth specifications;

[0255] S5.1: Adjust the irradiation intensity of the infrared irradiation device to 1500W / m 2 , and the irradiation time to 20min;

[0256] S5.2: Place the bundled wood fibers into the device and perform infrared irradiation treatment;

[0257] S5.3: During the treatment process, regularly check the temperature and humidity of the fibers, and maintain them at 75°C and 10%;

[0258] S5.4: After the treatment is completed, take out the bundled wood fibers and cool them;

[0259] S6.1: Use the grading device to preliminarily grade the bundled wood fibers after irradiation treatment;

[0260] S6.2: Further divide the fibers into different grades according to their length of 3-10cm and diameter of 0.5-2mm;

[0261] S6.3: Perform secondary grading and classify the fibers according to their strength and elasticity;

[0262] S6.4: Package the graded fibers and mark the grades;

[0263] S7.1: Place the bundled wood fibers of different grades into the stirring device;

[0264] S7.2: Add 10% water and other additives by mass percentage to improve the mixing effect;

[0265] S7.3: Start the device and stir at a speed of 125rpm, and observe whether the mixture is uniform;

[0266] S7.4: After stirring is completed, take out the mixture and perform pre-drying treatment at a temperature of 75°C for 2h;

[0267] S8.1: Place the mixture into the hot-pressing equipment;

[0268] S8.2: Add 20% phenolic resin adhesive by mass percentage and mix uniformly;

[0269] S8.3: Adjust the temperature of the equipment to between 170°C, the pressure to between 3MPa, and the time to between 20min;

[0270] S8.4: Start the equipment and perform hot-pressing;

[0271] S8.5: After hot-pressing is completed, take out the reconstituted wood and cool it;

[0272] S8.6: Post-treatment of the cooled reconstituted wood, such as sanding, cutting;

[0273] S8.7: Quality check of the final reconstituted wood.

[0274] Example 4 Summary: This example is a balanced performance and cost implementation, with all parameters set at recommended middle values. This example can successfully produce reconstituted wood with relatively balanced performance and cost.

[0275] Example 5:

[0276] S1.1: Select small-diameter managed timber with a diameter of 7.5 cm;

[0277] S1.2: Perform preliminary cleaning to remove bark and external impurities;

[0278] S1.3: Pre-heat the timber to a temperature of 62.5°C to facilitate subsequent splitting;

[0279] S1.4: Place the pre-processed timber for 1.5 hours into a roller saw cutting and splitting device;

[0280] S2.1: Adjust the adjustment knob on the device according to the desired veneer thickness, setting the veneer thickness to 9 mm;

[0281] S2.2: Check the sharpness of the saw blade and find that it is dull, so replace it;

[0282] S2.3: Start the device and perform splitting, observing that the veneer thickness meets the requirements;

[0283] S2.4: The veneer thickness meets the requirements and there is no need to fine-tune the saw blade spacing;

[0284] S3.1: Arrange the split veneer and remove excess debris, with the veneer length being 1.5 m and the width being 0.35 m;

[0285] S3.2: Place the arranged veneer into a fine roller crushing and defibrating device, controlling the operating speed to be 125 rpm;

[0286] S3.3: Start the device and observe that the veneer is completely defibrated;

[0287] S4.1: Adjust the adjustment knob on the device according to the required bundle wood fiber specifications, setting the bundle wood fiber length to 6.5 cm and the diameter to 1.25 mm;

[0288] S4.2: Check the defibrating teeth of the crushing roller and find that they are dull, so replace them;

[0289] S4.3: Start the device and perform defibration, observing that the bundle wood fibers meet the requirements;

[0290] S4.4: The bundle-shaped wood fibers meet the requirements, and there is no need to fine-tune the roller gap and the specifications of the defibration teeth;

[0291] S5.1: Adjust the irradiation intensity of the infrared irradiation device to 1500W / m 2 , and the irradiation time is 20min;

[0292] S5.2: Put the bundle-shaped wood fibers into the device for infrared irradiation treatment;

[0293] S5.3: During the treatment process, regularly check the temperature and humidity of the fibers, and keep them at 62.5℃ and 7.5%;

[0294] S5.4: After the treatment is completed, take out the bundle-shaped wood fibers and cool them down;

[0295] S6.1: Use the grading device to preliminarily grade the bundle-shaped wood fibers after irradiation treatment;

[0296] S6.2: According to the fiber length of 3-10cm and the diameter of 0.5-2mm, further classify them into different grades;

[0297] S6.3: Perform secondary grading according to the strength and elasticity of the fibers;

[0298] S6.4: Package the graded fibers and mark the grades;

[0299] S7.1: Put the bundle-shaped wood fibers of different grades into the stirring device;

[0300] S7.2: Add 10% water and other additives by mass percentage to improve the mixing effect;

[0301] S7.3: Start the device and stir at a speed of 125rpm, and observe whether the mixture is uniform;

[0302] S7.4: After stirring is completed, take out the mixture and perform pre-drying treatment at a temperature of 62.5℃ for 1.5h;

[0303] S8.1: Put the mixture into the hot-pressing equipment;

[0304] S8.2: Add 15% phenolic resin adhesive by mass percentage and mix uniformly;

[0305] S8.3: Adjust the temperature of the equipment to be between 155℃, the pressure to be between 2MPa, and the time to be between 15min;

[0306] S8.4: Start the equipment and perform hot-pressing;

[0307] S8.5: After hot pressing is completed, the reconstituted wood is taken out and cooled down;

[0308] S8.6: The cooled reconstituted wood is post-processed, such as sanding, cutting;

[0309] S8.7: The final reconstituted wood is quality checked.

[0310] Example 5 Summary: This example is a cost- prioritized implementation, with all parameters set at recommended lower values. While this may reduce product performance, it can significantly reduce production cost and energy consumption. Experimental results show that this example can successfully produce reconstituted wood with slightly inferior performance but lower cost.

[0311] Test Experiment and Experimental Content:

[0312] Purpose of Experiment: Compare the performance and cost of reconstituted wood produced by the five examples.

[0313] Experimental Steps:

[0314] 1. Prepare five kinds of reconstituted wood according to the steps of the five examples respectively.

[0315] 2. Test the performance of the five kinds of reconstituted wood, including hardness, strength, wear resistance, moisture resistance, etc.

[0316] 3. Calculate the production cost of the five kinds of reconstituted wood, including raw material cost, energy consumption cost, equipment depreciation cost, etc.

[0317] 4. Organize the test results into a table, see Table 1.

[0318] Table 1 Test Experiment of Five Examples:

[0319]

[0320] Experiment Summary:

[0321] From the experimental results, it can be seen that the reconstituted wood of Example 3 has the best performance, but the production cost is also the highest. The reconstituted wood of Example 2 has the worst performance, but the production cost is the lowest. The reconstituted wood of Example 4 has both performance and cost at a medium level, which is a good choice to balance performance and cost. The reconstituted wood of Example 1 and Example 5 has both performance and cost at a medium-low level, suitable for cost-sensitive markets.

[0322] Comparative Experiment and Experimental Content:

[0323] Comparative Experiment One:

[0324] Purpose of Experiment: Compare the performance and cost of reconstituted wood prepared by the five examples with samples of existing technology.

[0325] Experimental content and steps:

[0326] 1. Prepare five kinds of reconstituted wood according to the steps of the five examples.

[0327] 2. Select existing technology samples for comparison.

[0328] 3. Perform performance tests on the five kinds of reconstituted wood and existing technology samples, including hardness, strength, wear resistance, moisture resistance, etc.

[0329] 4. Calculate the production cost of the five kinds of reconstituted wood and existing technology samples, including raw material cost, energy consumption cost, equipment depreciation cost, etc.

[0330] 5. Organize the test results into a table, see Table 2.

[0331] Table 2: Experimental data of Comparative Experiment 1:

[0332]

[0333] Summary: From the data in Table 2, it can be seen that the reconstituted wood prepared in the five examples is superior to the existing technology samples in terms of hardness, strength, wear resistance, moisture resistance, etc. In particular, the reconstituted wood prepared in Example 3 has a hardness and strength of 600HV and 60MPa, which is significantly higher than other samples. In addition, the production cost of the reconstituted wood prepared in the five examples is generally lower than that of the existing technology samples, especially Example 2, whose production cost is only 1200 yuan / m 3 , which is much lower than the 1400 yuan / m 3 of the existing technology samples. This shows that the methods of the five examples have successfully improved the performance of the reconstituted wood while reducing the production cost.

[0334] Comparative Experiment 2:

[0335] Purpose of the experiment: Compare the environmental performance of the reconstituted wood prepared in the five examples with the existing technology samples.

[0336] Experimental content and steps:

[0337] 1. Prepare five kinds of reconstituted wood according to the steps of the five examples.

[0338] 2. Select existing technology samples for comparison.

[0339] 3. Perform environmental performance tests on the five kinds of reconstituted wood and existing technology samples, including VOCs emissions, formaldehyde emissions, nitrogen-containing compound emissions, fine particulate matter (PM2.5) emissions, etc.

[0340] 4. At the same time, measure the energy consumption of each sample during production, including electrical energy, thermal energy, chemical energy, etc.

[0341] 5. Compile the test results into a table, see Table 3.

[0342] Table 3 compares the experimental data from Experiment 3:

[0343]

[0344] In summary, the data in Table 3 show that the reconstituted wood prepared in all five examples outperforms existing technology samples in terms of environmental performance. Whether it's VOCs emissions, formaldehyde emissions, nitrogen compound emissions, or PM2.5 emissions, the emissions from the reconstituted wood prepared in the five examples are all lower than those of existing technology samples. Furthermore, the energy consumption during the production process of the reconstituted wood prepared in the five examples is generally lower than that of existing technology samples. This means that the methods in these five examples have successfully reduced energy consumption while improving the environmental performance of reconstituted wood.

[0345] Comparative Experiment 3:

[0346] Experimental objective: To compare the service life and durability of reconstituted wood prepared in five examples with existing technology samples.

[0347] Experimental content and steps:

[0348] 1. Five types of reconstituted wood were prepared according to the steps of the five embodiments.

[0349] 2. Select existing technology samples for comparison.

[0350] 3. Conduct service life tests on five types of reconstituted wood and existing technology samples, including weather resistance and anti-aging properties.

[0351] 4. At the same time, durability tests are conducted, including abrasion resistance, impact resistance, corrosion resistance, and fire resistance.

[0352] 5. Organize the test results into a table, Table 4.

[0353] Table 4 compares the experimental data from Experiment 3:

[0354]

[0355] In summary, the data in Table 4 show that the reconstituted wood prepared in the five examples outperforms existing samples in terms of service life and durability. Whether in terms of weather resistance, aging resistance, abrasion resistance, impact resistance, corrosion resistance, or fire resistance, the reconstituted wood prepared in the five examples outperforms existing samples. In particular, the reconstituted wood prepared in Example 3 achieved a weather resistance and aging resistance of 12 years, far exceeding the other samples. This indicates that the methods of these five examples successfully improved the service life and durability of reconstituted wood while also enhancing its cost-effectiveness.

[0356] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A method of processing small-diameter thinnings, characterized in that The method comprises the following steps: S1, the small diameter of the fostered timber is put into the roller saw cutting and splitting equipment; S2, the saw blade spacing of the equipment is adjusted, so that the thickness of the split veneer is 3-15mm; S3, the split veneer is put into the fine rolling and defibration device; S4, by adjusting the roller gap and defibration tooth specification of the device, the veneer is defibrated into longitudinally arranged and transversely connected bundle-shaped wood fibers; S5, the defibrated bundle-shaped wood fibers are treated by infrared radiation to improve their physical properties; The step S5 specifically comprises the following steps: S5.1, the irradiation intensity and time of the infrared radiation device are adjusted; S5.2, the bundle-shaped wood fibers are put into the device for infrared radiation treatment; S5.3, during the treatment process, the temperature and humidity of the fibers are checked regularly; S5.4, after the treatment is completed, the bundle-shaped wood fibers are taken out and cooled; The irradiation intensity in step S5.1 is 1000-2000 W / m 2 The irradiation time is 10-30 min, the fiber temperature in step S5.3 should be kept at 50-100°C during the irradiation, and the fiber humidity should be kept at 5%-15% during the irradiation; S6, the bundle-shaped wood fibers after irradiation treatment are processed, and they are divided into different grades according to the length and diameter of the fibers; The step S6 specifically comprises the following steps: S6.1, the bundle-shaped wood fibers after irradiation treatment are preliminarily graded by using the grading device; S6.2, according to the length of 3-10cm and the diameter of 0.5-2mm, the fibers are further divided into different grades; S6.3, secondary grading is carried out, and the fibers are classified according to their strength and elasticity; S6.4, the graded fibers are packaged and labeled; S7, the graded bundle-shaped wood fibers are mixed to form a mixture with multi-grade fibers; S8, the mixture is glued to form reconstituted wood.

2. The method of claim 1, wherein the method is characterized by: The step S1 specifically comprises the following steps: S1.1, small-diameter fostered timber with a diameter of 5-20cm is selected; S1.2, preliminary cleaning is carried out to remove bark and external impurities; S1.3, the timber is preheated to a temperature of 50-100℃ to facilitate subsequent splitting; S1.4, the timber after preheating for 1-3h is put into the roller saw cutting and splitting equipment.

3. The method of claim 1, wherein the method is characterized by: The step S2 specifically comprises the following steps: S2.1, according to the required veneer thickness, the adjustment knob on the equipment is adjusted; S2.2, the sharpness of the saw blade is checked, and the saw blade is replaced if it is found to be dull; S2.3, the equipment is started, and the splitting is carried out to observe whether the thickness of the veneer meets the requirements; S2.4, according to the needs, the saw blade spacing is continuously fine-tuned.

4. The method of claim 1, wherein the method is characterized by: The step S3 specifically comprises the following steps: S3.1, the split veneer is arranged well to remove excess debris, and the length of the veneer is 1-3m and the width is 0.2-0.5m; S3.2, the arranged veneer is put into the fine rolling and defibration device, and the operating speed is controlled at 50-200rpm; S3.3, the equipment is started, and it is observed whether the veneer is completely defibrated.

5. The method of claim 1, wherein the method is characterized by: The step S4 specifically comprises the following steps: S4.1, according to the required bundle-shaped wood fiber specification, the adjustment knob on the device is adjusted; S4.2, the defibration teeth of the rolling roller are checked, and the defibration teeth are replaced if they are found to be dull; S4.3, the equipment is started, and the defibration is carried out to observe whether the bundle-shaped wood fibers meet the requirements; S4.4, according to the needs, the roller gap and defibration tooth specification are continuously fine-tuned.

6. The method of claim 1, wherein the method is characterized by: The step S7 specifically comprises the following steps: S7.1, put the bundle-shaped wood fibers of different levels into a stirring device; S7.2, add water and adhesive with a total mass percentage of 5%-15% to improve the mixing effect; S7.3, start the device and stir at a speed of 50-200 rpm, and observe whether the mixture is uniform; S7.4, after stirring is completed, take out the mixture and perform pre-drying treatment at a temperature of 50-100℃ for 1-3h.

7. The method of claim 1, wherein the method is characterized by: The step S8 specifically comprises the following steps: S8.1, put the mixture into a hot-pressing device; S8.2, add a phenolic resin adhesive with a mass percentage of 10%-30% and mix uniformly; S8.3, adjust the temperature of the device to be between 140-200℃, the pressure to be between 1-5MPa, and the time to be between 10-30min; S8.4, start the device and perform hot-pressing; S8.5, after hot-pressing is completed, take out the reconstituted wood and perform cooling; S8.6, perform polishing post-treatment and cutting post-treatment on the cooled reconstituted wood; S8.7, perform quality inspection on the final reconstituted wood.

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