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High-temperature tunnel kiln type flattening method for bamboo tubes

A technology of tunnel kiln and bamboo tube, which is applied in reed/straw processing, wood processing equipment, manufacturing tools, etc. It can solve the problems of high compressive strength of pressure tanks, reduce the strength of operation flattening, good physical and mechanical properties, and reduce processing The effect of temperature

Active Publication Date: 2016-06-29
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These provide sustainable raw materials for the development of bamboo processing in my country. Round bamboo tubes are flattened without cracks because of their sustainable source of raw materials, high utilization rate, and beautiful texture. However, the existing bamboo tubes still need high-pressure high-temperature steam (such as 180°C), a special boiler is required, and the pressure tank has a high compressive strength (requires a minimum of 1.8MPa)

Method used

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  • High-temperature tunnel kiln type flattening method for bamboo tubes
  • High-temperature tunnel kiln type flattening method for bamboo tubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, as shown in accompanying drawing, the high-temperature tunnel kiln formula flattening method of bamboo tube comprises following processing steps:

[0025] Step (1) Pre-treat fresh bamboo tubes; after 6 days of felling, the bamboo tubes are cut off as required, and the inner and outer segments are removed at the same time by a device, and then a longitudinal linear seam with a width of 3 is sawed on the bamboo tube.

[0026] The step (2) stacking the bamboo tubes; place the bamboo tubes on a backing plate with a thickness of 4mm, fix 4 bamboo tubes on the backing plate, the sawing kerf of the bamboo tubes faces upward, and the two ends of the bamboo tubes are clamped by a clamping device. Fix it with the backing plate, put round steel with a diameter of 20 in each round bamboo tube, the length of the round steel is the length of the bamboo tube plus 30mm, and there are multiple semicircular positioning grooves on both sides of the length of the multi-layer b...

Embodiment 2

[0029] Embodiment 2, as shown in accompanying drawing, the high-temperature tunnel kiln formula flattening method of bamboo tube comprises following processing steps:

[0030] Step (1) Pre-treat fresh bamboo tubes; after 8 days of felling, the bamboo tubes are cut off as required, and the inner and outer segments are removed at the same time by a device, and then a longitudinal linear seam with a width of 6mm is sawed on the bamboo tube.

[0031] Step (2) stacking bamboo tubes; place the bamboo tubes on a backing plate with a thickness of 4 mm, fix 4 to 6 bamboo tubes on the backing plate, the sawing seam of the bamboo tubes faces upward, and the two ends of the bamboo tubes are passed through a clamping device Fix it with the backing plate, fill each round bamboo tube with round steel with a diameter of 25mm, the length of the round steel is the length of the bamboo tube plus 30mm, and there are multiple semicircular positioning grooves on both sides of the length of the multi...

Embodiment 3

[0034] Embodiment 3, as shown in accompanying drawing, the high-temperature tunnel kiln formula flattening method of bamboo tube comprises following processing steps:

[0035]Step (1) Pre-treat the fresh bamboo tubes; after cutting the bamboo tubes for no more than 8 days, the bamboo tubes are cut off as required, and the inner and outer segments are removed by a device at the same time, and then a longitudinal linear slit with a width of 4 mm is sawed on the bamboo tubes.

[0036] Step (2) Stack the bamboo tubes; place the bamboo tubes on a backing plate with a thickness of 4mm, fix 5 bamboo tubes on the backing plate, the sawing seam of the bamboo tubes faces upward, and connect the two ends of the bamboo tubes to the backing plate through a clamping device Fix it, put round steel with a diameter of 23mm in each round bamboo tube, the length of the round steel is the length of the bamboo tube plus 30mm, and there are multiple semicircular positioning grooves on both sides of ...

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Abstract

The invention relates to a high-temperature tunnel kiln type flattening method for bamboo tubes. The method comprises the following process steps of: (1) pre-treating fresh bamboo tubes; (2) stacking the bamboo tubes; (3) flattening the round bamboo tubes in a tunnel kiln; and (4) performing post-treatment on the flattened bamboo chips. The method provided by the invention has the advantages that in a high-temperature divided tunnel kiln at the temperature of 130-160 DEG C, the temperature of the bamboo tubes reaches the softening points of lignin, cellulose and hemicellulose by means of quick heating and heat-moisture treatment of high-temperature superheated steam on fresh round bamboo tubes. Under such a circumstance, under the pressure of a top-mounted oil cylinder in a bamboo tube flattening room, the round bamboo tubes with saw joints are flattened, so that the bamboo flattening treatment temperature as well as the labor intensity and severe environment during operation of workers is reduced. The manufactured flattened bamboos are more excellent in physical and mechanical properties and the like, are attractive in color and luster and are suitable for manufacture of artware and furniture and home decoration. The method provides a more excellent processing method for bamboo industry.

Description

technical field [0001] The invention relates to a tunnel kiln-type flattening method for bamboo tubes, which belongs to the technical field of bamboo processing in the wood industry. Background technique [0002] my country is rich in bamboo resources. In 2011, the bamboo forest area was 5.381 million hectares and 1.644 billion roots. These provide sustainable raw materials for the development of bamboo processing in my country. Round bamboo tubes are flattened without cracks because of their sustainable source of raw materials, high utilization rate, and beautiful texture. However, the existing bamboo tubes still need high-pressure high-temperature steam (such as 180°C), a special boiler is required, and the compressive strength of the pressure tank is also high (requires a minimum of 1.8MPa). This is mainly because it is processed in a high-temperature tank, and then the bamboo tube in the tank is taken to the cold environment of the workshop to be flattened, because the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K9/00B27J1/00
CPCB27J1/00B27K9/002
Inventor 许斌李延军张齐生王新洲
Owner NANJING FORESTRY UNIV
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