CN116619503A - Bamboo flattening process - Google Patents
Bamboo flattening process Download PDFInfo
- Publication number
- CN116619503A CN116619503A CN202210134329.1A CN202210134329A CN116619503A CN 116619503 A CN116619503 A CN 116619503A CN 202210134329 A CN202210134329 A CN 202210134329A CN 116619503 A CN116619503 A CN 116619503A
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- bamboo
- flattening
- arc
- equal
- process according
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 213
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 213
- 241001330002 Bambuseae Species 0.000 title claims abstract description 213
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 213
- 239000011425 bamboo Substances 0.000 title claims abstract description 213
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 17
- 239000002023 wood Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005336 cracking Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/06—Softening or hardening of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention relates to the technical field of bamboo processing, and particularly discloses a bamboo flattening process, which comprises the following steps: s1: cutting the segmented bamboo tube into bamboo materials with arc-shaped sections; s2: softening the bamboo wood; s3: after the equal-arc thickness-fixing treatment is carried out on the bamboo, a plurality of bamboo pieces subjected to the equal-arc thickness-fixing treatment are sequentially abutted in the circumferential direction and are sequentially pressed, so that two sides of the bamboo in the radial direction and two sides of the bamboo in the circumferential direction are extruded and flattened, and a bamboo board is obtained; s4: and cooling the bamboo boards, and drying the bamboo boards. The invention adopts a continuous feeding mode to enable adjacent bamboo materials to be mutually pressed, thereby reducing the loss rate.
Description
Technical Field
The invention relates to the field of bamboo processing, in particular to a bamboo flattening process.
Background
Because the bamboo is columnar, in the processing process of the bamboo, the whole bamboo is generally cut to obtain bamboo tubes, the bamboo tubes are longitudinally split into 2-6 pieces to form a plurality of bamboo pieces with arc-shaped cross sections, and the bamboo pieces are further processed to obtain the bamboo board with rectangular cross sections. In order to manufacture bamboo into bamboo boards, bamboo materials with arc-shaped cross sections are flattened in a mode of rolling the bamboo materials. The traditional bamboo flattening process can only roll the upper surface and the lower surface of the bamboo, so that the bamboo is easy to crack after rolling, the loss rate of the bamboo is improved, and the production cost is increased. Therefore, part of the prior art adopts the modes of gradually pressing grooves on the surface of the bamboo material or arranging gaps in the axial direction of the bamboo material, and the like, so as to provide flattened space for the bamboo material and avoid the cracking of the bamboo material after the complete fiber of the bamboo material is stressed.
The Chinese patent literature discloses a crack-free bamboo flattening method (publication No. CN 1330471C), which specifically discloses that firstly, a bamboo which is cut into sections is subjected to green removal, outer joint removal, splitting, tabasheer removal, inner joint removal, preheating, heating and softening, and then longitudinal grooves are gradually rolled on the inner wall of the bamboo along the circumferential direction by using a roller with convex teeth, so that the arc length of the inner wall of the bamboo is extended, and the bamboo is flattened. Compared with the traditional bamboo flattening process, the method can reduce the cracking risk, but the loss rate is still higher, and the production efficiency is low.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the bamboo flattening process has the advantages that the loss rate of the bamboo is reduced, and meanwhile, the production efficiency is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a bamboo flattening process comprises the following steps:
s1: cutting the segmented bamboo tube into bamboo materials with arc-shaped sections;
s2: softening the bamboo wood;
s3: after the equal-arc thickness-fixing treatment is carried out on the softened bamboo, a plurality of pieces of bamboo which are subjected to equal-arc thickness-fixing treatment are sequentially abutted in the circumferential direction and are sequentially pressed, so that two sides of the bamboo in the radial direction and two sides of the bamboo in the circumferential direction are extruded and flattened, and a bamboo board is obtained;
s4: and cooling the bamboo boards, and drying the bamboo boards.
The invention has the beneficial effects that: after softening the bamboo timber, improve the plasticity of bamboo timber, the mode of the mutual butt of reuse adjacent bamboo timber is exerted pressure to the both ends in the bamboo timber circumference, makes the bamboo timber receive the pressure of four directions simultaneously at the exhibition flat in-process, and then avoids the bamboo timber to lead to the bamboo timber fracture at the too big pressure that bears of exhibition flat in-process radial direction. The same batch of bamboo boards flattened by the method only need to discard the first and the last bamboo boards, thereby greatly reducing the loss of bamboo. In order to realize mutual extrusion between adjacent bamboo materials, a continuous feeding mode is adopted, so that the production efficiency is greatly improved. In addition, the method for flattening the bamboo board reduces the precision requirement on equal-arc thickness fixing, increases the bearable pressure in the bamboo flattening process, improves the yield of the bamboo, and improves the quality of the bamboo board.
Drawings
FIG. 1 is a schematic diagram of a flattening principle of bamboo in a first embodiment of the invention;
fig. 2 is a schematic diagram of a flattening principle of bamboo in a second embodiment of the present invention.
Description of the reference numerals:
1. a feed channel; 2. flattening the channel; 21. a first flattened section; 22. a second flattened section; 3. and a transmission key.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, a bamboo flattening process includes the following steps:
s1: cutting the segmented bamboo tube into bamboo materials with arc-shaped sections;
s2: softening the bamboo wood;
s3: after the equal-arc thickness-fixing treatment is carried out on the bamboo, a plurality of bamboo pieces subjected to the equal-arc thickness-fixing treatment are sequentially abutted in the circumferential direction and are sequentially pressed, so that two sides of the bamboo in the radial direction and two sides of the bamboo in the circumferential direction are extruded and flattened, and a bamboo board is obtained;
s4: and cooling the bamboo boards, and drying the bamboo boards.
The working principle of the invention is as follows:
softening the bamboo material, abutting the bamboo materials and sequentially pressing the bamboo materials, so that four surfaces of the bamboo material are extruded simultaneously, excessive stretching of the bamboo material in the circumferential direction of the bamboo material in the flattening process is avoided, and the cracking risk in the flattening process of the bamboo material is reduced.
From the above description, the beneficial effects of the invention are as follows: after softening the bamboo timber, improve the plasticity of bamboo timber, the mode of the mutual butt of reuse adjacent bamboo timber is exerted pressure to the both ends in the bamboo timber circumference, makes the bamboo timber receive the pressure of four directions simultaneously at the exhibition flat in-process, and then avoids the bamboo timber to lead to the bamboo timber fracture at the too big pressure that bears of exhibition flat in-process radial direction. The same batch of bamboo boards flattened by the method only need to discard the first and the last bamboo boards, thereby greatly reducing the loss of bamboo. In order to realize mutual extrusion between adjacent bamboo materials, a continuous feeding mode is adopted, so that the production efficiency is greatly improved. In addition, the method for flattening the bamboo board reduces the precision requirement on equal-arc thickness fixing, increases the bearable pressure in the bamboo flattening process, improves the yield of the bamboo, and improves the quality of the bamboo board.
Further, the conditions of the softening treatment in the step S2: the pressure is 0.8MPa to 0.9MPa, the temperature is 170 ℃ to 200 ℃ and the time is 8min to 10min.
From the above description, the bamboo is softened to reduce the hardness of the bamboo, improve the toughness and the plasticity of the bamboo, further reduce the cracking risk in the bamboo flattening process, reduce the flattening difficulty and enable the bamboo to be flattened completely.
Further, the medium-arc thickness-fixing treatment in the step S3 is specifically to press the softened bamboo into an equal-arc shape, and the equal-thickness processing of the bamboo is carried out by using an arc knife.
Further, in the step S3, flattening is performed by a flattening machine.
Further, after the bamboo is placed in the feeding channel of the flattening machine, the bamboo is pushed into the flattening channel by a transmission key positioned at one end of the feeding channel to be flattened.
Further, the feeding channel is in a circular arc shape matched with the radian of the softened bamboo wood, and the length of the feeding channel is smaller than or equal to the perimeter of the softened bamboo wood.
As is apparent from the above description, the length of the feed passage is less than or equal to the perimeter of the softened bamboo wood, shortening the length of the feed passage.
Further, the flattened passage includes a first flattened section in a quarter circular arc shape and a second flattened section in a straight line shape.
From the above description, through the first flattening section with a quarter circular arc shape and the second flattening section with a straight line shape, the bamboo material is flattened through the first flattening section in a circular arc transition manner, and then flattened through the second flattening section with a straight line shape, so that a buffer space is provided for the bamboo material, the cracking risk of the bamboo material is reduced, and the loss rate of the bamboo material is further reduced.
Further, the flattening channel comprises a first flattening section with gradually increased diameter along the bamboo conveying direction and a second flattening section with a straight line shape.
From the above description, the first flattening section and the second flattening section are arranged, so that the radian of the bamboo material is gradually increased, the bamboo material gradually tends to be flat, a buffer space is provided for the bamboo material, and the cracking risk of the bamboo material is reduced.
Further, the drying treatment in the step S4 is specifically that the drying treatment is carried out for 48 to 72 hours at the temperature of 40 to 90 ℃ until the water content is lower than 10 percent.
Example 1
Referring to fig. 1, a bamboo flattening process includes the steps of:
s1: cutting the segmented bamboo tube into bamboo materials with arc-shaped sections;
s2: softening the bamboo wood; wherein, the conditions of the softening treatment are as follows: the pressure is 0.8MPa, the temperature is 180 ℃ and the time is 10min;
s3: after the equal-arc thickness-fixing treatment is carried out on the bamboo, a plurality of bamboo pieces subjected to the equal-arc thickness-fixing treatment are sequentially abutted in the circumferential direction and are sequentially pressed, so that two sides of the bamboo in the radial direction and two sides of the bamboo in the circumferential direction are extruded and flattened, and a bamboo board is obtained; the constant-arc thickness fixing treatment is to press the softened bamboo into an equal-arc shape, and the equal-thickness processing of the bamboo is performed by an arc knife, and meanwhile, the yellow, outer and inner joint removing treatment is performed on the bamboo part.
S4: cooling the bamboo boards, and drying the bamboo boards; the drying treatment is specifically that the drying is carried out for 48 to 72 hours under the condition of the temperature of 40 to 90 ℃ until the water content is lower than 10 percent.
Specifically, in step S3, the bamboo is flattened by the flattening machine, when the bamboo is placed in the feeding channel 1 of the flattening machine, the bamboo is pushed into the flattening channel 2 by the transmission key 3 positioned at one end of the feeding channel 1 to be flattened, the feeding channel 1 is in a circular arc shape matched with the radian of the softened bamboo, and the length of the feeding channel 1 is smaller than or equal to the perimeter of the softened bamboo. Preferably, flattened passage 2 comprises a first flattened section 21 in the shape of a quarter circular arc and a second flattened section 22 in the shape of a straight line.
Example two
Referring to fig. 2, a bamboo flattening process includes the steps of:
s1: cutting the segmented bamboo tube into bamboo materials with arc-shaped sections;
s2: softening the bamboo wood; wherein, the conditions of the softening treatment are as follows: the pressure is 0.8MPa, the temperature is 180 ℃ and the time is 10min;
s3: after the equal-arc thickness-fixing treatment is carried out on the bamboo, a plurality of bamboo pieces subjected to the equal-arc thickness-fixing treatment are sequentially abutted in the circumferential direction and are sequentially pressed, so that two sides of the bamboo in the radial direction and two sides of the bamboo in the circumferential direction are extruded and flattened, and a bamboo board is obtained; the constant-arc thickness fixing treatment is to press the softened bamboo into an equal-arc shape, and the equal-thickness processing of the bamboo is performed by an arc knife, and meanwhile, the yellow, outer and inner joint removing treatment is performed on the bamboo part.
S4: cooling the bamboo boards, and drying the bamboo boards; the drying treatment is specifically that the drying is carried out for 48 to 72 hours under the condition of the temperature of 40 to 90 ℃ until the water content is lower than 10 percent.
Specifically, in step S3, the bamboo is flattened by the flattening machine, when the bamboo is placed in the feeding channel 1 of the flattening machine, the bamboo is pushed into the flattening channel 2 by the transmission key 3 positioned at one end of the feeding channel 1 to be flattened, the feeding channel 1 is in a circular arc shape matched with the radian of the softened bamboo, and the length of the feeding channel 1 is smaller than or equal to the perimeter of the softened bamboo. Preferably, the flattened passage 2 includes a first flattened section 21 having a diameter gradually increasing in the bamboo transporting direction and a second flattened section 22 having a straight line shape.
Comparative example
S1: cutting the segmented bamboo tube into bamboo materials with arc-shaped sections;
s2: softening the bamboo wood; wherein, the conditions of the softening treatment are as follows: the pressure is 0.8MPa, the temperature is 180 ℃ and the time is 10min;
s3: after the constant-arc thickness treatment is carried out on the bamboo, pressing is carried out on two sides of the bamboo in the radial direction to prepare a bamboo board;
s4: cooling the bamboo boards, and drying the bamboo boards; the drying treatment is specifically that the drying is carried out for 48 to 72 hours under the condition of the temperature of 40 to 90 ℃ until the water content is lower than 10 percent.
The bamboo boards were produced in the manner of example one, example two and comparative example, and the statistical loss rate and production efficiency were calculated as follows:
list one
In summary, according to the bamboo flattening process provided by the invention, the mode of shortening the feeding channel is adopted to realize continuous feeding of bamboo, so that the same batch of bamboo is pressed against each other end to end, the bamboo is driven to be transmitted by pushing between adjacent bamboo boards, four faces of the bamboo are extruded simultaneously in the flattening process, the effect of avoiding cracking of the bamboo is achieved, only the first bamboo board and the last bamboo board of the same batch of bamboo boards are abandoned, the loss of the bamboo boards is greatly reduced, the product yield is improved, and the production efficiency is improved.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (9)
1. The bamboo flattening process is characterized by comprising the following steps of:
s1: cutting the segmented bamboo tube into bamboo materials with arc-shaped sections;
s2: softening the bamboo wood;
s3: after the bamboo after softening treatment is subjected to equal-arc thickness fixing treatment, a plurality of bamboo pieces subjected to equal-arc thickness fixing treatment are sequentially abutted in the circumferential direction and are sequentially pressed, so that two sides of the bamboo in the radial direction and two sides of the bamboo in the circumferential direction are extruded and flattened, and a bamboo board is obtained;
s4: and cooling the bamboo boards, and drying the bamboo boards.
2. The bamboo flattening process according to claim 1, wherein the softening treatment conditions in step S2 are as follows: the pressure is 0.8MPa to 0.9MPa, the temperature is 170 ℃ to 200 ℃ and the time is 8min to 10min.
3. The bamboo flattening process according to claim 1, wherein the medium-arc thickness-fixing treatment in the step S3 is specifically to press the softened bamboo into an equal-arc shape, and the equal-thickness processing of the bamboo is performed by using an arc cutter.
4. A bamboo flattening process according to claim 1, wherein flattening is performed by a flattening machine in step S3.
5. The bamboo flattening process according to claim 4, wherein in the step S3, after the bamboo is placed in the feeding channel of the flattening machine, the bamboo is pushed into the flattening channel by a driving key located at one end of the feeding channel to be flattened.
6. The bamboo flattening process according to claim 5, wherein the feeding channel is in a circular arc shape matching the radian of the softened bamboo, and the length of the feeding channel is smaller than or equal to the perimeter of the softened bamboo.
7. A bamboo flattening process according to claim 6, wherein the flattening channel includes a first flattening section in a quarter circular arc shape and a second flattening section in a straight line shape.
8. A bamboo flattening process according to claim 6, wherein the flattening channel includes a first flattening section having a diameter gradually increasing in a conveying direction of the bamboo and a second flattening section having a straight line shape.
9. The bamboo flattening process according to claim 1, wherein the drying treatment in the step S4 is specifically drying at 40-90 ℃ for 48-72 hours until the water content is lower than 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134329.1A CN116619503A (en) | 2022-02-14 | 2022-02-14 | Bamboo flattening process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134329.1A CN116619503A (en) | 2022-02-14 | 2022-02-14 | Bamboo flattening process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116619503A true CN116619503A (en) | 2023-08-22 |
Family
ID=87596013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210134329.1A Pending CN116619503A (en) | 2022-02-14 | 2022-02-14 | Bamboo flattening process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116619503A (en) |
-
2022
- 2022-02-14 CN CN202210134329.1A patent/CN116619503A/en active Pending
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