CN108214801B - Furniture shaping method - Google Patents

Furniture shaping method Download PDF

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Publication number
CN108214801B
CN108214801B CN201711478783.4A CN201711478783A CN108214801B CN 108214801 B CN108214801 B CN 108214801B CN 201711478783 A CN201711478783 A CN 201711478783A CN 108214801 B CN108214801 B CN 108214801B
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China
Prior art keywords
shaping
chamber
furniture
stage
shelf
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CN108214801A (en
Inventor
宁家和
张大庆
王光超
王艳
赵美美
王高敏
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Beijing Classic Furniture Co Ltd
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Beijing Classic Furniture Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/18—Manufacture or reconditioning of specific semi-finished or finished articles of furniture or of doors
    • 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
    • B27K5/007—Treating of wood not provided for in groups B27K1/00, B27K3/00 using pressure
    • 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
    • B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention discloses a furniture shaping device, which comprises a tank body, wherein the tank body comprises a shaping chamber, an air inlet valve, an air outlet valve and an inert gas inlet valve are arranged on the tank body, and the air inlet valve, the air outlet valve and the inert gas inlet valve are communicated with the shaping chamber; a shelf for placing furniture is arranged in the shaping chamber; the shelf has a hollow structure and the surface of the shelf is provided with a vent hole; the inside of the shelf is also provided with a heater. The invention also provides a furniture shaping method, which is characterized in that wood is placed on the shelf in the shaping chamber, and then the furniture shaping operation is carried out. The invention has simple equipment and convenient manufacture, and can effectively reduce the distortion and longitudinal crack in the wood drying process.

Description

Furniture shaping method
Technical Field
The invention relates to a furniture shaping device and a shaping method thereof.
Background
In the prior art, the conventional method for shaping wood is a method for drying and shaping by steam or vacuum, wherein the method for drying and shaping by steam is a method for heating the wood by using air and absorbing moisture evaporated from the wood by means of convection heat exchange between hot air in a shaping room and the wood, discharging wet air in the shaping room and sucking in cold air outside; the vacuum drying method has the disadvantages of complex equipment, high manufacturing difficulty, relatively high investment cost, small volume of the drying equipment, unsuitability for large-scale production, poor uniformity of water content after wood drying and difficult shaping. More importantly, after the wood is subjected to steam drying and vacuum drying and shaping in the prior art, the conditions of excessive warping, distortion and longitudinal cracking are easily generated due to insufficient internal stress release, so that the quality of furniture is reduced.
Disclosure of Invention
In order to solve the above problems, the present invention provides the following technical solutions:
1. a furniture shaping device comprises a tank body and a shaping chamber arranged in the tank body, wherein the tank body is provided with an air inlet valve, an air outlet valve and an inert gas inlet valve which are communicated with a drying chamber; a shelf for placing furniture is arranged in the shaping chamber; the shelf has a hollow structure and the surface of the shelf is provided with a vent hole; the inside of the shelf is also provided with a heater.
2. The furniture styling device of claim 1 wherein the heater is selected from the group consisting of steam heaters, microwave heaters, and hot plate heaters.
3. A method of styling furniture, the method comprising:
providing the furniture shaping device according to the technical scheme 1 or 2, placing furniture on a shelf in the shaping chamber, and then carrying out shaping operation.
4. The furniture setting method according to claim 3, wherein the furniture setting procedure comprises a first stage, a second stage and a third stage which are sequentially performed;
in the first stage, the air temperature in the sizing chamber is increased from room temperature to 30-40 ℃, and the first stage lasts for 2-4 days;
in the second stage, the air temperature in the sizing chamber is kept at 30-40 ℃, and the duration of the second stage is 2-4 days;
in the third stage, the temperature in the sizing chamber is reduced from 30-40 ℃ to room temperature, and the duration of the second stage is 3-5 days.
5. The furniture setting method of claim 4, wherein in the first stage, the air pressure in the setting chamber is alternately at a low pressure of 0.4-0.6atm and a high pressure of 1.5-2.5atm, the time at the low pressure is 10-16 hours each time, and the time at the high pressure is 10-16 hours each time; the air temperature in the sizing chamber is maintained at room temperature or is increased from the room temperature to 30-40 ℃;
in the second stage, the air pressure in the sizing chamber is maintained at 1.2-1.8 atm; the air temperature in the shaping chamber is kept at 30-40 ℃;
in the third stage, the air pressure in the shaping chamber is alternately at a low pressure of 0.1-0.4atm and a high pressure of 1.5-3atm, the time of each time of low pressure is 4-12 hours, and the time of each time of high pressure is 4-12 hours; the air temperature in the shaping chamber is maintained at 30-40 ℃;
6. the furniture setting method according to any of claims 3 to 5, wherein the setting chamber is filled with nitrogen or CO2To raise the air pressure in the sizing chamber.
And the warping degree and the longitudinal crack degree are compared with the test board using the drying and sizing method in the prior art.
Through detection, the warping degree and the longitudinal cracking degree of the furniture wood obtained by the drying and shaping method in the prior art are both larger than those of the furniture wood obtained by the shaping method, so that the furniture wood is proved to be superior to the existing shaping means, the internal stress of the wood can be eliminated to a greater extent, and the furniture with better quality can be obtained.
Meanwhile, the invention saves heat energy, has simple equipment, convenient manufacture and low investment cost and is suitable for large-scale production.
Due to CO2The existence of a large amount of the carbon dioxide can increase the pyrolysis speed of the wood, so that the CO is injected into the sizing chamber2So that substances such as hemicellulose in the wood are changed in the heat treatment process, and the shaping stability is improved.
Drawings
Fig. 1 is a structural view of a furniture setting device of the present invention.
FIG. 2(a) is a schematic view showing the change of the air pressure in the shaping chamber in the embodiment.
FIG. 2(b) is a schematic view showing the temperature change in the shaping chamber in the example.
Reference numerals:
1 tank body 2 shaping chamber 3 air inlet valve and 4 air outlet valve
5 inert gas inlet valve 6 shelf 7 bellows 8 furniture.
Detailed Description
The present invention will be further described with reference to the following examples in order to facilitate understanding of those skilled in the art.
As shown in fig. 1, the present invention provides a furniture shaping device, which comprises a tank body 1, wherein the tank body is spherical, the tank body comprises a shaping chamber 2, the tank body 1 comprises an air inlet valve 3, an air outlet valve 4 and an inert gas inlet valve 5, the air inlet valve 3, the air outlet valve 4 and the inert gas inlet valve 5 are communicated with the shaping chamber 2, and a shelf 6 for placing furniture 8 is arranged inside the shaping chamber 2.
The air inlet valve 3 is used for injecting air into the shaping chamber 2, the air outlet valve 4 is used for discharging water vapor and gas generated by drying wood, the inert gas inlet valve 5 is used for injecting inert gas, and CO is used for injecting in the embodiment2。
As shown in fig. 1, a shelf 6 is placed in the shaping chamber 2, and furniture 8 is placed on the partition plate 6, in order to increase ventilation and improve drying efficiency, the shelf 6 is internally hollow, further, ventilation holes can be further formed in the upper and lower surfaces of the shelf, and in this embodiment, a heater is further arranged inside the shelf, and the heater is heated by microwaves.
The shaping chamber 3 is internally provided with an air box 9, and the air box 9 is used for driving air to flow so as to accelerate the evaporation of the moisture on the surface of the wood.
The present invention provides a furniture setting method, as shown in fig. 1, in this embodiment, furniture 8 is placed on the shelf 6 inside the setting chamber 2 of the furniture setting device of the present invention, and a setting process is performed for 10 days.
As shown in fig. 2, the specific steps of the sizing are as follows:
(1) the first stage is as follows:
day 1: keeping the temperature in the shaping chamber at 20 ℃, placing the furniture 8 on the shelf 6 in the shaping chamber 2 of the furniture shaping device, exhausting air from the shaping chamber, adjusting the preset air pressure in the tank body shaping chamber to 0.5atm, keeping the preset air pressure for 12h, increasing the air pressure to 2atm, and keeping the air pressure for 12 h;
day 2: keeping the temperature in the shaping chamber at room temperature, adjusting the air pressure in the shaping chamber to a preset air pressure of 0.5atm, increasing the air pressure to 2atm after 12h, and keeping the air pressure of 2atm for 12 h;
day 3: uniformly raising the temperature in the shaping chamber from 20 ℃ at room temperature to 40 ℃ within 24 h; adjusting the air pressure in the shaping chamber to a preset air pressure of 0.5atm, increasing the air pressure to 2.5atm after 12 hours, and keeping the air pressure of 2.5atm for 12 hours; .
And a second stage:
day 4-6: keeping the temperature in the shaping chamber at 40 deg.C, adjusting the air pressure in the shaping chamber from 2atm to 1.5atm, and keeping the air pressure at 1.5atm for 3 days;
and a third stage:
day 7: keeping the temperature in the shaping chamber at 40 deg.C, reducing the air pressure in the shaping chamber to 0.2atm, maintaining the air pressure of 0.2atm for 12h, increasing the air pressure to 2.5atm, reducing the air pressure to 0.2atm again after 6h, and maintaining the air pressure of 0.2atm for 6 h;
day 8: uniformly reducing the temperature in the shaping chamber from 40 ℃ to 30 ℃ within 24h, keeping the air pressure in the shaping chamber at 0.2atm for 6h, increasing the air pressure to 2.5atm, keeping for 6h, reducing and recovering to 0.2atm, and keeping for 4 h; raising the air pressure to 1.5atm, and keeping the air pressure for 4 hours; it was again lowered to 0.2atm for 4 h.
Day 9: uniformly reducing the temperature in the shaping chamber from 30 ℃ to 20 ℃ within 24h, raising the air pressure in the shaping chamber to 2.0atm for 4h, and then reducing the air pressure to 0.2atm for 4 h; rising to 2.0atm for 4h, and then lowering to 0.2atm for 4 h; rising to 2.0atm for 4h, and then lowering to 0.2atm for 4 h;
day 10: keeping the temperature in the shaping room at 20 deg.C, increasing the air pressure in the shaping room to 2.0atm, keeping for 4h, and decreasing to 0.2atm, keeping for 4 h; rising to 2.0atm for 4h, and then lowering to 0.2atm for 4 h; then the pressure is increased to 2.0atm and kept for 4h, and then the pressure is reduced to 0.2atm and kept for 4h, and the standard pressure is restored.
In the present embodiment, the above-mentioned process is performed by injecting CO into the inert gas inlet valve 6 every time the pressure is raised2To be realized.
After the steps are completed, according to the requirements of GBT-6491-.
The results of the experiment are shown in table 1:
straight bend Transverse bend Warp bend Distortion of Longitudinal split
Drying and shaping method in prior art 0.4 0.2 0.6 0.5 0.2
The invention relates to a shaping method 0.3 0.1 0.4 0.3 0.1
TABLE 1
As can be seen from the results in Table 1, through detection, the average value of the warping degree and the average value of the longitudinal cracking degree of the furniture wood obtained by the drying and shaping method in the prior art are both larger than those of the furniture shaping method, so that the furniture shaping method is proved to be superior to the prior art, the internal stress of the furniture wood can be eliminated to a greater extent, and the shaped furniture with better quality can be obtained.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; all simple equivalent changes and modifications made according to the claims and the content of the creation specification of the present invention should still fall within the scope covered by the present patent.

Claims (2)

1. A furniture styling method comprising:
the furniture shaping device comprises a tank body and a shaping chamber arranged in the tank body, wherein the tank body is provided with an air inlet valve, an air outlet valve and an inert gas inlet valve which are communicated with the shaping chamber in a fluid manner; a shelf for placing furniture is arranged in the shaping chamber; the shelf has a hollow structure and the surface of the shelf is provided with a vent hole; the inside of the shelf is also provided with a heater; wherein the heater is selected from a steam heater, a microwave heater and an electric heating plate heater;
placing furniture on a shelf in the shaping chamber, and then carrying out furniture shaping operation;
the furniture shaping process comprises a first stage, a second stage and a third stage which are sequentially carried out;
in the first stage, the temperature in the sizing chamber is kept at room temperature or is increased from the room temperature to 30-40 ℃, and the duration of the first stage is 2-4 days;
in the second stage, the air temperature in the sizing chamber is kept at 30-40 ℃, and the duration of the second stage is 2-4 days;
in the third stage, the air temperature in the sizing chamber is kept at 30-40 ℃ or is reduced from 30-40 ℃ to room temperature, and the duration of the third stage is 3-5 days;
wherein, in the first stage, the air pressure in the sizing chamber is alternately at a low pressure of 0.4-0.6atm and a high pressure of 1.5-2.5atm, the time of each time of low pressure is 10-16 hours, and the time of each time of high pressure is 10-16 hours;
in the second stage, the air pressure in the sizing chamber is maintained at 1.2-1.8 atm;
in the third stage, the air pressure in the shaping chamber is alternately at a low pressure of 0.1-0.4atm and a high pressure of 1.5-3atm, the time of each time at the low pressure is 4-12 hours, and the time of each time at the high pressure is 4-12 hours.
2. A furniture styling method as claimed in claim 1 wherein the styling chamber is filled with nitrogen or CO2To raise the air pressure in the setting chamber.
CN201711478783.4A 2017-12-29 2017-12-29 Furniture shaping method Active CN108214801B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201711478783.4A CN108214801B (en) 2017-12-29 2017-12-29 Furniture shaping method

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CN108214801B true CN108214801B (en) 2020-02-18

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1661309A (en) * 2004-02-26 2005-08-31 那迪股份公司 Drying kiln
CN101224593A (en) * 2008-02-01 2008-07-23 中国林业科学研究院木材工业研究所 Wood heat treatment method
CN204976915U (en) * 2015-07-23 2016-01-20 天津和远家具有限公司 Wood drying device
CN205245750U (en) * 2015-12-03 2016-05-18 北京市农林科学院 Dryer
CN206683344U (en) * 2017-04-28 2017-11-28 普洱美投木业有限公司 A kind of wooden sheet drying unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1661309A (en) * 2004-02-26 2005-08-31 那迪股份公司 Drying kiln
CN101224593A (en) * 2008-02-01 2008-07-23 中国林业科学研究院木材工业研究所 Wood heat treatment method
CN204976915U (en) * 2015-07-23 2016-01-20 天津和远家具有限公司 Wood drying device
CN205245750U (en) * 2015-12-03 2016-05-18 北京市农林科学院 Dryer
CN206683344U (en) * 2017-04-28 2017-11-28 普洱美投木业有限公司 A kind of wooden sheet drying unit

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