CN113400434A - Continuous extrusion forming equipment for long fiber straw board and preparation method thereof - Google Patents
Continuous extrusion forming equipment for long fiber straw board and preparation method thereof Download PDFInfo
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- CN113400434A CN113400434A CN202110639535.3A CN202110639535A CN113400434A CN 113400434 A CN113400434 A CN 113400434A CN 202110639535 A CN202110639535 A CN 202110639535A CN 113400434 A CN113400434 A CN 113400434A
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- straw
- bin
- resin
- compression bin
- raw materials
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- 239000010902 straw Substances 0.000 title claims abstract description 167
- 239000000835 fiber Substances 0.000 title claims abstract description 28
- 238000001125 extrusion Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 50
- 238000007906 compression Methods 0.000 claims abstract description 50
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 12
- 239000004840 adhesive resin Substances 0.000 claims description 6
- 229920006223 adhesive resin Polymers 0.000 claims description 6
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/029—Feeding; Proportioning; Controlling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/28—Moulding or pressing characterised by using extrusion presses
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention belongs to the technical field of plate preparation, and discloses continuous extrusion forming equipment for long-fiber straw plates and a preparation method thereof. Straw passes through straw material feeding unit with its surface coating cohesiveness resin, and the straw raw materials of surface coating cohesiveness resin gets into in the straw compression storehouse, and rethread reciprocating motion of reciprocating push-and-pull hydro-cylinder device pushes the straw raw materials of surface coating cohesiveness resin into straw compression storehouse die cavity and extrudees in succession, progressively sends it to the heating section solidification, and the section is stereotyped in cooling again, makes into continuous, uninterrupted monoblock panel behind draw gear and cut-off device. Directly and continuously producing straw plates by using long-fiber straws; the equipment has simple structure and convenient operation.
Description
Technical Field
The invention belongs to the technical field of plate preparation, and relates to continuous extrusion forming equipment for long-fiber straw plates and a preparation method thereof.
Background
Wood panels are mainly divided into two main categories: solid wood panels and composite panels. The production of solid wood boards requires the consumption of a large amount of wood, and the cutting of a large amount of trees causes great damage to the environment. Therefore, various laws and regulations are set out in China, trees are restricted from being felled to protect green forest resources, the price of solid wood plates is higher and higher, and the application of the material is further restricted.
The straw board is a composite board. Crop straws are byproducts of agricultural production, and China is a big agricultural country, so the yield of the straws is very high. The surplus straw is usually consumed by adopting an incineration method, which inevitably causes environmental pollution. Therefore, the straw is used for manufacturing the board, so that the waste can be utilized, the cost is low, and the benefit is high. The current process for manufacturing straw plates comprises the following steps: crushing straw, mixing with glue, spreading, heating to form, cooling to set, opening the mold and taking out the product. The method has long production period and low efficiency, and simultaneously, the fiber structure is damaged because the fiber becomes shorter (less than 6mm) after the straw is crushed, so that the whole strength of the prepared plate is not high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides continuous extrusion forming equipment of a long fiber straw board and a preparation method thereof, wherein the long fiber straw is used for directly and continuously producing the straw board; the equipment has simple structure and convenient operation.
The above purpose of the invention is realized by the following technical scheme:
a continuous extrusion forming device for long fiber straw plates comprises a straw feeding device and a straw compression bin, wherein the straw compression bin is located under the straw feeding device, a reciprocating push-pull oil cylinder device is arranged at the front end of the straw compression bin, a straw compression head is arranged between the straw compression bin and the reciprocating push-pull oil cylinder device, and the tail end of the straw compression bin is sequentially connected with a heating section, a cooling shaping section, a traction device and a cutting device;
straw material feeding unit includes that the straw throws feed bin, cohesiveness resin storehouse, coating roller, the straw throws feed bin bottom and is equipped with throws the material wheel, the straw throws and is equipped with the straw passageway under the feed bin, and straw passageway both sides are equipped with the coating roller respectively, are connected with the cohesiveness resin storehouse on every coating roller.
The method for preparing the long fiber straw board by the continuous extrusion forming equipment comprises the following specific steps:
straw passes through straw material feeding unit with its surface coating cohesiveness resin, and the straw raw materials of surface coating cohesiveness resin gets into in the straw compression storehouse, and rethread reciprocating motion of reciprocating push-and-pull hydro-cylinder device pushes the straw raw materials of surface coating cohesiveness resin into straw compression storehouse die cavity and extrudees in succession, progressively sends it to the heating section solidification, and the section is stereotyped in cooling again, makes into continuous, uninterrupted monoblock panel behind draw gear and cut-off device.
Further, the preparation method specifically comprises the following steps: adding straws into a straw feeding bin, rotating a feeding wheel, and uniformly dropping the straws onto the surface of a coating roller (the temperature is 120-150 ℃); rotating the coating roller, opening a discharge port of the cohesive resin bin at the same time, and coating the cohesive resin material on the surface of the straw; controlling the gap between the coating rollers to enable the straw raw materials coated with the cohesive resin on the surface to uniformly fall into the straw compression bin (the temperature is 120-150 ℃), and quickly closing the bin cover of the straw compression bin after the straw raw materials coated with the cohesive resin on the surface are filled; starting a reciprocating push-pull oil cylinder device to quickly push the straw raw material coated with the adhesive resin on the surface into a straw compression bin; then the reciprocating push-pull oil cylinder device is pulled back through the straw compression head, the straw compression bin cover is opened, straw raw materials with the surfaces coated with the cohesive resin are put in, the straw compression bin cover is closed after the straw is filled with the straw, the reciprocating push-pull oil cylinder device is opened, and the straw raw materials with the surfaces coated with the cohesive resin are pushed into the straw compression bin again; compressing according to the continuous cycle work, gradually pushing the straw raw material into a mold heating section for plasticizing (the temperature is 130-200 ℃), solidifying and forming, finally entering a cooling and shaping section, after fully cooling and shaping (the water temperature is 10-60 ℃), conveying the board by a traction device, and cutting the board into fixed-length products with different sizes by a cutting device. The method can be used for continuously producing the long-fiber straw board.
The raw materials for preparing the plate by the preparation method are as follows: the long fiber straw accounts for 92-93% of the total weight of the board; the bonding resin accounts for 7-8% of the total weight of the plate.
Compared with the prior art, the invention has the beneficial effects that:
the invention directly prepares the long fiber straws into the board, the whole straw fiber is not damaged in the preparation process, and the indexes such as length, thickness and the like are not changed, so the whole strength of the prepared board is very high. In addition, as the adhesive resin is coated on the surface of the straw, the brittleness of the adhesive board is overcome, and the board has flat and smooth appearance and high commercial value.
In the production process of the preparation method, the straws are stacked along the direction of the storage bin, the compression head is driven to reciprocate for many times by the push-pull oil cylinder, and under the action of high temperature and high pressure, long-fiber straws are mutually lapped and wound together in a bent shape, so that the strength difference of the longitudinal direction and the transverse direction of the board is small and basically balanced and consistent.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a structural diagram of a continuous extrusion molding apparatus for long fiber straw boards according to the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
FIG. 3 is a flow chart of the continuous extrusion molding process of the long fiber straw board.
FIG. 4 is a schematic structural diagram of a continuous extrusion molding apparatus for long fiber straw board and a board manufactured by the method of the present invention.
In the figure, 1, straws, 2, a straw feeding bin, 3, a feeding wheel, 4, a cohesive resin bin A, 5, a cohesive resin bin B, 6, a coating roller A, 7, a coating roller B, 8, a straw compression bin, 9, a reciprocating push-pull oil cylinder device, 10, a straw compression head, 11, a heating section, 12, a cooling shaping section, 13, a traction device, 14, a cutting device, 15, a product and 16, a straw feeding device are arranged.
Detailed Description
The invention is described in more detail below with reference to specific examples, without limiting the scope of the invention. Unless otherwise specified, the experimental methods adopted by the invention are all conventional methods, and experimental equipment, materials, reagents and the like used in the experimental method can be obtained from commercial sources.
Example 1
A continuous extrusion forming device for long fiber straw plates comprises a straw feeding device 16 and a straw compression bin 8, wherein the straw compression bin 8 is located under the straw feeding device 16, a reciprocating push-pull oil cylinder device 9 is arranged at the front end of the straw compression bin 8, a straw compression head 10 is arranged between the straw compression bin 8 and the reciprocating push-pull oil cylinder device 9, and the tail end of the straw compression bin 8 is sequentially connected with a heating section 11, a cooling and shaping section 12, a traction device 13 and a cutting device 14;
straw material feeding unit 16 includes that the straw throws feed bin 2, adhesive resin storehouse, coating roller, the straw is thrown 2 bottoms in feed bin and is equipped with throws the material wheel 3, the straw is thrown and is equipped with the straw passageway under feed bin 2, and straw passageway both sides are equipped with the coating roller respectively, are connected with adhesive resin storehouse on every coating roller.
The method for preparing the long fiber straw board by the continuous extrusion forming equipment comprises the following specific steps:
the straw is coated with the cohesive resin on the surface through the straw feeding device 16, the straw raw material coated with the cohesive resin on the surface enters the straw compression bin 8, and is pushed into a die cavity of the straw compression bin 8 to be continuously extruded through the reciprocating motion of the reciprocating push-pull oil cylinder device 9, and is gradually conveyed to the heating section 11 to be solidified, then is shaped through the cooling shaping section 12, and is made into a continuous and uninterrupted whole plate through the traction device 13 and the cut-off device 14.
Further, the preparation method specifically comprises the following steps: adding the straws 1 into a straw feeding bin 2, rotating a feeding wheel 3, and uniformly dropping the straws 1 onto the surface of a coating roller (the temperature is 120-150 ℃); rotating the coating roller, opening a discharge port of the cohesive resin bin at the same time, and coating the cohesive resin material on the surface of the straw 1; controlling the gap between the coating rollers to enable the straw raw materials coated with the cohesive resin on the surface to uniformly fall into the straw compression bin 8 (the temperature is 120-150 ℃), and quickly closing the bin cover of the straw compression bin 8 after the straw raw materials coated with the cohesive resin on the surface are filled; starting a reciprocating push-pull oil cylinder device 9 to quickly push the straw raw material coated with the adhesive resin on the surface into a straw compression bin 8; then, the reciprocating push-pull oil cylinder device 9 is pulled back through the straw compression head 10, the bin cover of the straw compression bin 8 is opened, straw raw materials with the surfaces coated with the cohesive resin are put in, the bin cover of the straw compression bin 8 is closed after the straw is filled with the straw, the reciprocating push-pull oil cylinder device 9 is opened, and the straw raw materials with the surfaces coated with the cohesive resin are pushed into the straw compression bin 8 again; compressing according to the continuous circulation work, gradually pushing the straw raw material into a mold heating section 11 for plasticizing (with the temperature of 130-200 ℃), solidifying and forming, finally entering a cooling and shaping section 12, after fully cooling and shaping (with the water temperature of 10-60 ℃), conveying the board by a traction device 13, and cutting the board into fixed-length products 15 with different sizes by a cutting device 14. The method can be used for continuously producing the long-fiber straw board.
The raw materials for preparing the plate by the preparation method are as follows: the long fiber straw accounts for 92-93% of the total weight of the board; the bonding resin accounts for 7-8% of the total weight of the plate.
The embodiments described above are merely preferred embodiments of the invention, rather than all possible embodiments of the invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (4)
1. A continuous extrusion forming device for long fiber straw boards is characterized by comprising a straw feeding device (16) and a straw compression bin (8), wherein the straw compression bin (8) is located under the straw feeding device (16), a reciprocating push-pull oil cylinder device (9) is arranged at the front end of the straw compression bin (8), a straw compression head (10) is arranged between the straw compression bin (8) and the reciprocating push-pull oil cylinder device (9), and the tail end of the straw compression bin (8) is sequentially connected with a heating section (11), a cooling shaping section (12), a traction device (13) and a cutting device (14);
straw material feeding unit (16) are thrown feed bin (2), cohesiveness resin storehouse, coating roller including the straw, the straw is thrown feed bin (2) bottom and is equipped with throws material wheel (3), the straw is thrown and is equipped with the straw passageway under feed bin (2), and straw passageway both sides are equipped with the coating roller respectively, are connected with the cohesiveness resin storehouse on every coating roller.
2. The method for preparing the long fiber straw plate by the continuous extrusion molding equipment of the long fiber straw plate is characterized in that the straw is coated with the cohesive resin on the surface through the straw feeding device (16), the straw raw material coated with the cohesive resin on the surface enters the straw compression bin (8), then the straw raw material coated with the cohesive resin on the surface is pushed into a die cavity of the straw compression bin (8) to be continuously extruded through the reciprocating motion of the reciprocating push-pull oil cylinder device (9), the straw raw material is gradually conveyed to the heating section (11) to be solidified, then the straw raw material is shaped through the cooling shaping section (12), and the straw raw material is made into a continuous and uninterrupted whole plate through the traction device (13) and the cutting device (14).
3. The method for preparing the board as claimed in claim 2, wherein the straw (1) is added into the straw charging bin (2), the charging wheel (3) is rotated, and the straw (1) uniformly falls to the surface of the coating roller; rotating the coating roller, opening a discharge port of the cohesive resin bin at the same time, and coating the surface of the straw (1) with the cohesive resin material; controlling the gap between the coating rollers to enable the straw raw materials coated with the cohesive resin on the surface to uniformly fall into the straw compression bin (8), and quickly closing the bin cover of the straw compression bin (8) after the straw raw materials coated with the cohesive resin on the surface are filled; starting a reciprocating push-pull oil cylinder device (9) to quickly push the straw raw material coated with the adhesive resin on the surface into a straw compression bin (8); then, the reciprocating push-pull oil cylinder device (9) is pulled back through the straw compression head (10), a bin cover of the straw compression bin (8) is opened, straw raw materials with surfaces coated with cohesive resin are put into the bin cover of the straw compression bin (8) after the straw is filled, the reciprocating push-pull oil cylinder device (9) is opened, and the straw raw materials with surfaces coated with the cohesive resin are pushed into the straw compression bin (8) again; compressing according to the continuous circulation work, gradually pushing the straw raw materials into a mold heating section (11) for plasticizing, curing and forming, finally entering a cooling and shaping section (12), fully cooling and shaping, then conveying the board out by a traction device (13), and cutting into fixed-length products (15) with different sizes by a cutting device (14). The method can be used for continuously producing the long-fiber straw board.
4. A method of producing sheet material as claimed in any one of claims 2 or 3 in which the sheet material is produced from: the long fiber straw accounts for 92-93% of the total weight of the board; the bonding resin accounts for 7-8% of the total weight of the plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110639535.3A CN113400434A (en) | 2021-06-08 | 2021-06-08 | Continuous extrusion forming equipment for long fiber straw board and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110639535.3A CN113400434A (en) | 2021-06-08 | 2021-06-08 | Continuous extrusion forming equipment for long fiber straw board and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113400434A true CN113400434A (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110639535.3A Pending CN113400434A (en) | 2021-06-08 | 2021-06-08 | Continuous extrusion forming equipment for long fiber straw board and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113400434A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA916571A (en) * | 1972-12-12 | Sorbier Pierre | Process and an automatic machine for the continuous preparation of a mixture of pulped and mouldable wood | |
| CN1253072A (en) * | 1998-10-29 | 2000-05-17 | 徐振明 | Technology for manufacturing structural materials or boards with wood fibre stem or stalk |
| CN2392656Y (en) * | 1999-11-02 | 2000-08-23 | 张永义 | Reciprocating impact-extrusion type machine for making straw-made plate with paper surface |
| CN101224596A (en) * | 2008-02-04 | 2008-07-23 | 西北农林科技大学 | Method for paving recombinant material slab and device thereof |
| CN102712100A (en) * | 2009-09-23 | 2012-10-03 | 西姆佩尔坎普机械设备制造有限责任公司和两合公司 | Method for producing cardboard-like fiber boards from wood fibers |
| CN206937545U (en) * | 2016-12-19 | 2018-01-30 | 吉林恒大环保工程有限公司 | A kind of process units for making careless plate |
| CN110303570A (en) * | 2019-07-29 | 2019-10-08 | 江苏中联路基工程有限公司 | A kind of straw drain bar process units |
-
2021
- 2021-06-08 CN CN202110639535.3A patent/CN113400434A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA916571A (en) * | 1972-12-12 | Sorbier Pierre | Process and an automatic machine for the continuous preparation of a mixture of pulped and mouldable wood | |
| CN1253072A (en) * | 1998-10-29 | 2000-05-17 | 徐振明 | Technology for manufacturing structural materials or boards with wood fibre stem or stalk |
| CN2392656Y (en) * | 1999-11-02 | 2000-08-23 | 张永义 | Reciprocating impact-extrusion type machine for making straw-made plate with paper surface |
| CN101224596A (en) * | 2008-02-04 | 2008-07-23 | 西北农林科技大学 | Method for paving recombinant material slab and device thereof |
| CN102712100A (en) * | 2009-09-23 | 2012-10-03 | 西姆佩尔坎普机械设备制造有限责任公司和两合公司 | Method for producing cardboard-like fiber boards from wood fibers |
| CN206937545U (en) * | 2016-12-19 | 2018-01-30 | 吉林恒大环保工程有限公司 | A kind of process units for making careless plate |
| CN110303570A (en) * | 2019-07-29 | 2019-10-08 | 江苏中联路基工程有限公司 | A kind of straw drain bar process units |
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Application publication date: 20210917 |