CN109732729B - Method for manufacturing rotary-cut thick bamboo veneer - Google Patents
Method for manufacturing rotary-cut thick bamboo veneer Download PDFInfo
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- CN109732729B CN109732729B CN201910135782.2A CN201910135782A CN109732729B CN 109732729 B CN109732729 B CN 109732729B CN 201910135782 A CN201910135782 A CN 201910135782A CN 109732729 B CN109732729 B CN 109732729B
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Abstract
The invention provides a method for manufacturing a rotary-cut thick bamboo veneer, and belongs to the technical field of bamboo processing. The method comprises the following steps: cross-cutting the selected fresh bamboo to obtain bamboo sections; flattening the outer joints and opening the inner joints of the bamboo sections; softening the bamboo sections by adopting high-temperature saturated steam; inserting the log core into the bamboo sections after the bamboo sections are softened so as to shape the bamboo sections; and (4) performing rotary cutting on the shaped bamboo sections to obtain the bamboo rotary-cut thick veneer. The invention can prepare the large-width rotary-cut thick bamboo veneer, can improve the utilization rate of the bamboo material, simplifies the softening and shaping process of the bamboo material and improves the production efficiency.
Description
Technical Field
The invention belongs to the technical field of bamboo processing, and particularly relates to a method for manufacturing a rotary-cut thick bamboo veneer.
Background
The rotary-cut bamboo veneer technology is mature in the current bamboo industry, but the technology has more problems to be researched and overcome. The rotary cutting thickness of the existing bamboo veneer is generally 1-3 mm, the length is generally less than 1m, and the bamboo sections are required to be round and straight, otherwise, the outturn percentage of the bamboo veneer is very low, and even a continuous veneer cannot be formed. The thin and short bamboo veneer means that the number of veneer layers used for producing plywood, laminated veneer lumber or bamboo-wood composite is large, so that the number of glue layers is large, and finally, the glue consumption is large.
At present, when the bamboo is subjected to rotary cutting, the bamboo needs to be softened firstly, and after the bamboo is shaped by a shaping machine, a rotary cutting veneer is subjected to rotary cutting by the rotary cutting machine, so that the process is not only complicated, but also a large-width and large-thickness rotary cutting veneer of the bamboo cannot be prepared.
Disclosure of Invention
The invention aims to provide a method for manufacturing a rotary-cut thick bamboo veneer, which overcomes all the defects or one of the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for manufacturing a rotary-cut thick bamboo veneer comprises the following steps:
cross-cutting the selected fresh bamboo to obtain bamboo sections;
flattening the outer joints and opening the inner joints of the bamboo sections;
softening the bamboo sections by adopting high-temperature saturated steam;
inserting the log core into the bamboo sections after the bamboo sections are softened so as to shape the bamboo sections;
and (4) performing rotary cutting on the shaped bamboo sections to obtain the bamboo rotary-cut thick veneer.
Furthermore, the selected fresh bamboo is 3-6 years old, the outer diameter is larger than 50mm, and the difference of the outer diameters of the two ends of the bamboo is smaller than 10 mm.
Furthermore, the length of the bamboo section obtained by cross cutting is 1000-2000 mm.
Further, the specific steps of softening the bamboo sections are as follows: and (3) placing the bamboo sections in a high-pressure sealing tank, fixing two ends of the bamboo sections, introducing high-temperature saturated steam to soften the bamboo sections, controlling the temperature to be 160-180 ℃, and preserving the heat for 6-20 min.
Furthermore, when the bamboo sections are softened, the log cores are also placed in a high-pressure sealing tank, and the log cores are inserted into the bamboo sections in the high-pressure sealing tank after the heat preservation time is up.
Furthermore, the diameter of the log core is 5-10 mm larger than the inner diameter of the bamboo section.
Further, the thickness of the bamboo rotary-cut thick veneer is 3-5 mm.
Furthermore, the step of getting through the inner section comprises the step of removing and flattening bamboo joints in the bamboo sections by using a milling cutter.
Compared with the prior art, the invention has the following advantages:
the manufacturing method of the rotary-cut thick bamboo veneer provided by the invention can be used for preparing the rotary-cut bamboo veneer with a large width and a large thickness, the utilization rate of bamboo materials is improved, the bamboo softening and shaping process is simplified, and the production efficiency is improved. In addition, the large-width thick veneer can reduce the veneer amount used by plywood, laminated veneer lumber or bamboo-wood composite material, so that the glue layer is less, the glue consumption is reduced, and the environmental protection property is improved.
Detailed Description
The invention is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The fresh bamboo wood selected in the embodiment of the invention has the age of 3-6 years, the outer diameter is more than 50mm, and the outer diameter difference of two ends of the bamboo wood is less than 10 mm.
Example 1:
1) cutting the bamboo sections: selecting fresh bamboo of 5-year age, transversely cutting into bamboo sections of 2000mm, sand flattening outer sections, and opening inner sections, wherein the outer diameter of the bamboo sections is 90mm, the inner diameter of the bamboo sections is 70 mm; wherein, the inner section of getting through specifically is: removing and flattening bamboo joints in the bamboo sections by adopting a milling cutter;
2) softening and shaping bamboo sections: placing the bamboo section obtained by cross cutting in a high-pressure sealing tank, fixing two ends of the bamboo section in a tank body, introducing high-temperature saturated steam (180 ℃) to soften the bamboo section, carrying out heat preservation for 10min, then unloading and taking out the bamboo section, immediately inserting a log core (with the diameter of 75 mm) into the bamboo section to meet the requirements of shaping the bamboo section, and carrying out rotary cutting after softening and shaping;
3) rotary cutting the bamboo sections: and (3) placing the bamboo sections which are just softened and shaped on a rotary cutter, clamping the round wood core by a clamping shaft, and rotary-cutting the bamboo into bamboo rotary-cut plates with the thickness of 3 mm.
Example 2:
1) cutting the bamboo sections: selecting fresh bamboo with the age of 6 years, transversely cutting into bamboo sections with the length of 1800mm, wherein the outer diameter of the bamboo sections is 100mm, the inner diameter of the bamboo sections is 78mm, sand flattening the outer sections, and punching through the inner sections;
2) softening and shaping bamboo sections: putting the log core and the bamboo section into a high-pressure sealed tank at the same time, fixing two ends of the bamboo section into the tank body, introducing high-temperature saturated steam (180 ℃) to soften the bamboo section, keeping the temperature for 12min, controlling to push the log core (with the diameter of 85 mm) to be inserted into the bamboo section, and releasing the pressure to take out the bamboo section;
3) rotary cutting the bamboo sections: and (3) placing the bamboo sections which are just softened and shaped on a rotary cutter, clamping the round wood core by a clamping shaft, and rotary-cutting the bamboo into bamboo rotary-cut plates with the thickness of 4 mm.
Example 3:
1) cutting the bamboo sections: selecting fresh bamboo of 5-year age, transversely cutting into bamboo sections with the diameter of 1500mm, sand flattening the outer sections and opening the inner sections, wherein the outer diameter of the bamboo sections is 80mm, the inner diameter of the bamboo sections is 58 mm;
2) softening and shaping bamboo sections: placing the bamboo sections in a high-pressure sealing tank, fixing two ends of the bamboo sections in the tank body, introducing high-temperature steam (160 ℃) to soften the bamboo sections, carrying out heat preservation for 10min, then unloading and taking out the bamboo sections, immediately inserting round wood cores (with the diameter of 65 mm) into the bamboo sections to meet the requirements of shaping the bamboo sections, and carrying out rotary cutting after softening and shaping;
3) rotary cutting the bamboo sections: and (3) placing the bamboo sections which are just softened and shaped on a rotary cutter, clamping the round wood core by a clamping shaft, and rotary-cutting the bamboo into bamboo rotary-cut plates with the thickness of 3 mm.
Example 4:
1) cutting the bamboo sections: selecting fresh bamboo with the age of 4 years, transversely cutting the bamboo into bamboo sections with the length of 1000mm, flattening the outer sections with sand and opening the inner sections, wherein the outer diameter of the bamboo sections is 60mm, the inner diameter of the bamboo sections is 42 mm;
2) softening and shaping bamboo sections: placing the bamboo sections in a high-pressure sealed tank, fixing two ends of the bamboo sections in the tank body, introducing high-temperature steam (180 ℃) to soften the bamboo sections, keeping the temperature for 6min, then unloading and taking out the bamboo sections, immediately inserting round wood cores (with the diameter of 47 mm) into the bamboo sections to meet the requirements of shaping the bamboo sections, and rotationally cutting after softening and shaping;
3) rotary cutting the bamboo sections: and (3) placing the bamboo sections which are just softened and shaped on a rotary cutter, clamping the round wood core by a clamping shaft, and rotary-cutting the bamboo into bamboo rotary-cut plates with the thickness of 3 mm.
Example 5:
1) cutting the bamboo sections: selecting fresh bamboo with the age of 6 years, transversely cutting the bamboo into bamboo sections with the length of 1000mm, wherein the outer diameter of each bamboo section is 120mm, the inner diameter of each bamboo section is 95mm, sand flattening the outer sections, and punching through the inner sections;
2) softening and shaping bamboo sections: placing the bamboo sections in a high-pressure sealed tank, fixing two ends of the bamboo sections in the tank body, introducing high-temperature steam (170 ℃) to soften the bamboo sections, carrying out heat preservation for 20min, then unloading and taking out the bamboo sections, immediately inserting round wood cores (with the diameter of 105 mm) into the bamboo sections to meet the requirements of shaping the bamboo sections, and carrying out rotary cutting after softening and shaping;
3) rotary cutting the bamboo sections: and (3) placing the bamboo sections which are just softened and shaped on a rotary cutter, clamping the round wood core by a clamping shaft, and rotary-cutting the bamboo into a bamboo rotary-cut plate with the thickness of 5 mm.
The diameter of the log core is matched with the diameter of the bamboo section, the bamboo section can be divided into a plurality of specifications according to the inner diameter of the bamboo section, and the diameter of the log core is 5-10 mm larger than the inner diameter of the bamboo section.
The manufacturing method of the rotary-cut thick bamboo veneer provided by the embodiment of the invention can be used for preparing the large-width rotary-cut thick bamboo veneer, so that the utilization rate of the bamboo material is improved, the bamboo softening and shaping process is simplified, and the production efficiency is improved.
The present invention has been disclosed in terms of the preferred embodiment, but is not intended to be limited to the embodiment, and all technical solutions obtained by substituting or converting equivalents thereof fall within the scope of the present invention.
Claims (4)
1. A method for manufacturing a rotary-cut thick bamboo veneer is characterized by comprising the following steps:
the method comprises the following steps of (1) transversely cutting selected fresh bamboo wood to obtain bamboo sections, wherein the selected fresh bamboo wood is 3-6 years old, the outer diameter is more than 50mm, and the outer diameter difference of two ends of the bamboo wood is less than 10 mm;
flattening the outer joints and opening the inner joints of the bamboo sections;
placing the bamboo sections in a high-pressure sealing tank, fixing two ends of the bamboo sections, introducing high-temperature saturated steam to soften the bamboo sections, controlling the temperature to be 160-180 ℃, and preserving heat for 6-20 min;
when the bamboo sections are softened, putting the log cores with the diameters 5-10 mm larger than the inner diameters of the bamboo sections into a high-pressure sealing tank, and inserting the log cores into the bamboo sections in the high-pressure sealing tank after the heat preservation time is reached so as to shape the bamboo sections;
and placing the softened and shaped bamboo sections on a rotary cutter, clamping the round wood core by a clamping shaft, and carrying out rotary cutting to obtain the rotary-cut thick bamboo veneer.
2. The method for manufacturing the rotary-cut thick bamboo veneer according to claim 1, wherein the length of the bamboo section obtained by cross-section is 1000-2000 mm.
3. The method for manufacturing the rotary-cut thick bamboo veneer according to claim 1, wherein the thickness of the rotary-cut thick bamboo veneer is 3-5 mm.
4. The method for manufacturing the rotary-cut thick bamboo veneer according to claim 1, wherein the step of opening the inner joints comprises the step of removing and flattening bamboo joints in the bamboo sections by using a milling cutter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910135782.2A CN109732729B (en) | 2019-02-25 | 2019-02-25 | Method for manufacturing rotary-cut thick bamboo veneer |
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| CN201910135782.2A CN109732729B (en) | 2019-02-25 | 2019-02-25 | Method for manufacturing rotary-cut thick bamboo veneer |
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| CN109732729B true CN109732729B (en) | 2020-07-31 |
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| CN112157774B (en) * | 2020-09-14 | 2021-11-23 | 福建省泰缘宏竹业科技有限公司 | Processing method of moso bamboo rotary slice |
| CN112757422B (en) * | 2021-01-18 | 2023-02-10 | 浙江农林大学 | Method for efficiently utilizing bamboo wood to manufacture rotary-cut veneer |
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| CN100377853C (en) * | 2003-02-28 | 2008-04-02 | 胡正仁 | Processing method of Mao bamboo rotary slice |
| KR100662042B1 (en) * | 2006-04-25 | 2006-12-27 | 이권혁 | The production method and pulp maked bamboos |
| CN102785277B (en) * | 2012-08-29 | 2014-09-24 | 浙江农林大学 | Device and method for rotatably cutting veneer of original bamboo section |
| CN107599106A (en) * | 2017-10-23 | 2018-01-19 | 江西省远南竹材集团有限公司 | A kind of preparation method of outdoor Integral bamboo veneer |
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