CN106976192B - Wood fiber thermal modification wood-plastic composite material equipment and preparation process of wood-plastic composite material - Google Patents
Wood fiber thermal modification wood-plastic composite material equipment and preparation process of wood-plastic composite material Download PDFInfo
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- CN106976192B CN106976192B CN201710169875.8A CN201710169875A CN106976192B CN 106976192 B CN106976192 B CN 106976192B CN 201710169875 A CN201710169875 A CN 201710169875A CN 106976192 B CN106976192 B CN 106976192B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
- B29C43/06—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
- B29C43/08—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts with circular movement, e.g. mounted on rolls, turntables
- B29C43/085—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts with circular movement, e.g. mounted on rolls, turntables and material fed in a continuous form, e.g. as a band
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses wood fiber thermal modification wood-plastic composite material equipment which comprises a pulse drying cylinder, a concentration cyclone, a wood-plastic composite material hot-pressing device and a hot-pressing platform, wherein the pulse drying cylinder, the concentration cyclone, the wood-plastic composite material hot-pressing device and the hot-pressing platform are sequentially connected; the pulse drying cylinder is connected to the top of the concentration cyclone through a transparent blanking pipe; the center height position of the concentration cyclone is connected with an upper exhaust pipe through a one-way valve, and the concentration cyclone is connected with a mould placed on a mould feeding station through a vacuum feeding pipe so as to convey dried wood fibers; the wood-plastic composite hot-pressing device comprises a reciprocating telescopic hot-pressing punch, a centrifugal rotating table, a heating unit and a jack support frame which are sequentially arranged from top to bottom; the mould comprises a mould box body and a piston type cover body which is connected to the top of the mould box body and can stretch up and down. The thermal modification treatment equipment provided by the invention improves the thermal modification performance of the wood-plastic composite material, and further improves the environmental protection performance and the density of the wood-plastic composite material.
Description
Technical Field
The invention relates to the technical field of wood-plastic materials, in particular to wood fiber thermal modification wood-plastic composite material equipment and a process of a wood-plastic composite material.
Background
At present, solid wood floors, reinforced solid wood floors, composite reinforced floors, PVC coiled material floors and the like are sold in the market. The floor using solid wood as a material can deform when being wetted, needs careful maintenance when in use, is fussy to install, is easy to damage by worms, cannot be used outdoors, and has poor weather resistance. The PVC coiled material floor needs to be paved by glue, is not suitable for household pavement, has no good visual sense than a solid wood floor, and has large pavement limitation. In addition, the composite floor board contains formaldehyde, which is proved to cause cancer at present and limits the content of formaldehyde not to exceed the national standard, but completely forbids the use of formaldehyde, which is impossible from the processing technology of solid wood and composite floor boards.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the thermal modification treatment equipment which combines pulse drying and cyclone drying to treat the wood fiber material and continuously inputs the wood fiber material into the hot-pressing device in a vacuum environment for hot-pressing treatment to obtain the wood-plastic composite material, so that the thermal modification performance of the wood-plastic composite material is improved, and the environmental protection performance of the wood-plastic composite material is further improved.
The technical scheme adopted by the invention is as follows: the wood fiber thermal modification wood-plastic composite material equipment comprises a pulse drying cylinder, a concentration cyclone, a wood-plastic composite material hot-pressing device and a hot-pressing platform which are connected in sequence, wherein the hot-pressing platform is provided with a die feeding station, a conveying die device and a die hot-pressing station which are connected in sequence; wherein: the pulse drying cylinder is connected to the top of the concentration cyclone through a transparent blanking pipe, and the top of the pulse drying cylinder is also connected with a PVC raw material blanking device; the center height position of the concentration cyclone is connected with an upper exhaust pipe through a one-way valve, and a vacuum feeding pipe is connected with a mould placed on a mould feeding station so as to convey the dried wood-plastic composite material mixed raw material;
the wood-plastic composite material hot-pressing device comprises a reciprocating telescopic hot-pressing punch, a centrifugal rotating table, a heating unit and a jack support frame which are sequentially arranged from top to bottom, wherein the centrifugal rotating table and the heating unit are supported on the ground through the jack support frame, a mold is placed at the top of the centrifugal rotating table, and the heating unit is connected to the bottom of the centrifugal rotating table;
the mould comprises a mould box body and a piston type cover body which is connected to the top of the mould box body and can stretch up and down, wherein the piston type cover body which can stretch up and down is of a transparent structure, and a pattern structure is arranged at the bottom of the piston type cover body.
Furthermore, the pulse drying cylinder, the concentration cyclone, the centrifugal rotating table of the wood-plastic composite material hot-pressing device, the heating unit and the conveying die device of the hot-pressing platform are all connected with a PLC control device, and the PLC control device controls the cooperative work among the devices.
Furthermore, the mould box body of the mould is also connected with a vacuumizing device, and the vacuumizing device is also connected with a PLC control device.
Furthermore, the position of the interior of the concentration cyclone, which is close to the outlet, is also connected with a buffering closing-in conical cover, and the bottom of the concentration cyclone, which is positioned at the buffering closing-in conical cover, is also connected with a lower exhaust pipe through a one-way valve.
Further, the PLC control device comprises a display device, a communication module and a user control module, wherein the user control module comprises a pulse drying control module, a concentration cyclone control module and a wood-plastic composite material hot-pressing device control module.
The technological method for processing the wood-plastic composite material by the wood fiber thermal modification wood-plastic composite material equipment at least comprises the steps of presetting the drying time of pulse drying for 15-50 seconds, the drying temperature for 480-592 ℃ and the pulse generation frequency; presetting the exhaust pressure of a one-way valve of an upper exhaust pipe of the concentration cyclone to be 80-220KPa;
presetting the rotation time and speed of a centrifugal rotating table of a wood-plastic composite hot-pressing device as 5-8 minutes and the temperature of a heating unit to 250-275 ℃; and (3) keeping the pressure of the reciprocating telescopic hot-pressing punch at 12-16KN for hot pressing, wherein the hot pressing time is 5-6 minutes, and the hot pressing is circulated for 3-5 times.
Furthermore, the pulse drying control module, the concentration cyclone control module and the wood-plastic composite material hot-pressing device control module respectively comprise a start-stop button and a corresponding time and temperature related parameter setting button.
Compared with the prior art, the invention has the beneficial effects that: according to the wood fiber thermal modification wood-plastic composite material equipment, the wood fiber material is treated by combining pulse drying and cyclone drying, and is continuously input into the hot-pressing device in a vacuum environment to be subjected to hot-pressing treatment to obtain the thermal modification treatment equipment for the wood-plastic composite material, so that harmful gas in the wood-plastic composite material is removed in the cyclone drying process for the first time, and the environmental protection performance of the wood-plastic composite material is improved.
The thermal modification treatment equipment adopts pulse airflow-rotational flow drying, volatile substances in wood fibers are controllably removed by controlling the heating time of the wood fibers, the surface properties of the wood fibers are regulated and controlled to realize thermal modification, and further the mechanical properties of a composite material product are improved.
Drawings
FIG. 1 is a schematic structural diagram of a wood fiber thermal modification wood-plastic composite material device; FIG. 2 is a schematic diagram of a user control module of a PLC control device of the thermal reforming treatment apparatus;
wherein: 1-a pulse drying cylinder, 2-a concentration cyclone, 21-a one-way valve, 22-an upper exhaust pipe, 23-a buffering closing conical cover and 24-a lower exhaust pipe; 3-a wood-plastic composite hot-pressing device, 31-a reciprocating telescopic hot-pressing punch, 32-a centrifugal rotating table, 33-a heating unit and 34-a jack support frame; 4-a hot pressing platform, 41-a mould feeding station, 42-a mould conveying device and 43-a mould hot pressing station; 5-transparent feeding pipe, 6-vacuum feeding pipe, 7-mould, 71-mould box body and 72-piston type cover body capable of extending up and down; 8-PLC control device, 81-display device, 82-communication module, 83-user control module; 9-vacuum-pumping equipment and 10-PVC raw material blanking device.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples, which are only for the purpose of explaining the present invention and do not limit the scope of the present invention.
As shown in fig. 1, the wood fiber thermal modification wood-plastic composite material device comprises a pulse drying cylinder 1, a concentration cyclone 2, a wood-plastic composite material hot-pressing device 3 and a hot-pressing platform 4 which are connected in sequence, wherein the hot-pressing platform 4 is provided with a mold feeding station 41, a mold conveying device 42 and a mold hot-pressing station 43 which are connected in sequence; wherein: the pulse drying cylinder 1 is connected to the top of the concentration cyclone 2 through a transparent blanking pipe 5, and the top is also connected with a PVC raw material blanking device 10; the central height position of the concentration cyclone 2 is connected with an upper exhaust pipe 22 through a one-way valve 21, and is connected with a mould 7 arranged on a mould feeding station 41 through a vacuum feeding pipe 6 so as to convey the dried wood-plastic composite material mixed raw material;
the wood-plastic composite hot-pressing device 3 comprises a hot-pressing punch 31, a centrifugal rotating table 32, a heating unit 33 and a jack support frame 34 which are arranged in sequence from top to bottom in a reciprocating and telescopic mode, wherein the centrifugal rotating table 32 and the heating unit 33 are supported on the ground through the jack support frame 34, a mold is placed at the top of the centrifugal rotating table 32, and meanwhile the heating unit 33 is connected to the bottom of the centrifugal rotating table 32;
the mold 7 comprises a mold box 71 and a piston type cover 72 which is connected to the top of the mold box and can stretch up and down, wherein the piston type cover 72 which can stretch up and down is of a transparent structure, and a pattern structure is arranged at the bottom of the piston type cover 72.
In the above embodiment, the pulse drying cylinder 1, the concentration cyclone 2, the centrifugal rotating table 32 of the wood-plastic composite hot-pressing device 3, the heating unit 33 and the conveying mold device 42 of the hot-pressing platform 4 are all connected to the PLC control device 8, and the PLC control device 8 controls the cooperative work among these devices, so as to realize automatic and centralized control of the thermal modification state after the wood fiber and the wood-plastic composite are mixed, thereby improving the acceleration efficiency.
In the above embodiment, the mold box 71 of the mold 7 is further connected with the vacuum-pumping device 9, and the vacuum-pumping device 9 is also connected with the PLC control device 8, so that the vacuum degree of the mold is improved, and the wood-plastic composite material is ensured to have higher density during processing.
In the above embodiment, the position of the interior of the concentrating cyclone 2 close to the outlet is further connected with a buffering closing-in conical cover 23, and the bottom of the concentrating cyclone 2 at the bottom of the buffering closing-in conical cover 23 is further connected with a lower exhaust pipe 24 through a one-way valve 21, so that the final exhaust is performed before the wood fiber enters the mold, the processing performance is improved, and the production rate is increased.
In the above embodiment, as shown in fig. 2, the PLC control device 8 includes a display device 81, a communication module 82 and a user control module 83, wherein the user control module 83 includes a pulse drying control module, a concentration cyclone control module, and a wood-plastic composite material hot-pressing device control module, and these modules can directly control and display various parameters of the pulse drying cylinder 1, the concentration cyclone 2, the wood-plastic composite material hot-pressing device 3, and the hot-pressing platform 4, so as to improve the automation degree thereof.
The technological method for processing the wood-plastic composite material by the wood fiber thermal modification wood-plastic composite material equipment at least comprises the steps of presetting the drying time of pulse drying for 15-50 seconds, the drying temperature for 480-592 ℃ and the pulse generation frequency; presetting the exhaust pressure of a one-way valve of an upper exhaust pipe of the concentration cyclone to be 80-220KPa;
presetting the rotation time and speed of a centrifugal rotating table of the wood-plastic composite material hot-pressing device and the temperature of a heating unit to 250-275 ℃; the pressure of the reciprocating telescopic hot-pressing punch is kept at 12-16KN for hot pressing, the hot pressing time is 5-6 minutes, and the hot pressing is circulated for 3-5 times. Particularly, when the temperature of the heating unit is heated to 260-265 ℃, the centrifugal rotating table rotates at 10-15 revolutions per minute, the pressure of the reciprocating telescopic hot-pressing punch is kept at 12-16KN for hot pressing, the hot pressing time is 5-6 minutes, the environment-friendly performance of the wood-plastic composite material obtained by circulating hot pressing for 3-5 times is optimal, and toxic gas in the wood-plastic composite material is fully removed.
In the above embodiment, the pulse drying control module, the concentration cyclone control module and the wood-plastic composite material hot-pressing device control module all include start-stop buttons and corresponding time and temperature related parameter setting buttons, so that the control performance is more stable.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (1)
1. A process for preparing a wood-plastic composite material by wood fiber thermal modification wood-plastic composite material equipment is characterized by at least presetting the drying time of pulse drying for 15-50 seconds, the drying temperature for 480-592 ℃ and the pulse generation frequency;
presetting the exhaust pressure of a one-way valve of an upper exhaust pipe of the concentration cyclone to be 80-220KPa;
presetting the rotation time and speed of a centrifugal rotating table of the wood-plastic composite material hot-pressing device and the temperature of a heating unit to 250-275 ℃; keeping the pressure of the reciprocating telescopic hot-pressing punch at 12-16KN for hot pressing, wherein the hot pressing time is 5-6 minutes, and the hot pressing is circulated for 3-5 times; the pulse drying control module, the concentration cyclone control module and the wood-plastic composite material hot-pressing device control module respectively comprise a start-stop button and corresponding time and temperature related parameter setting buttons;
the device comprises a pulse drying cylinder (1), a concentration cyclone (2), a wood-plastic composite hot-pressing device (3) and a hot-pressing platform (4) which are connected in sequence, wherein the hot-pressing platform (4) is provided with a die feeding station (41), a die conveying device (42) and a die hot-pressing station (43) which are connected in sequence; wherein: the pulse drying cylinder (1) is connected to the top of the concentration cyclone (2) through a transparent blanking pipe (5), and the top is also connected with a PVC raw material blanking device (10); the central height position of the concentration cyclone (2) is connected with an upper exhaust pipe (22) through a one-way valve (21), and is connected with a mould (7) arranged on a mould feeding station (41) through a vacuum feeding pipe (6) so as to convey the dried wood-plastic composite material mixed raw material;
the wood-plastic composite hot-pressing device (3) comprises a hot-pressing punch head (31), a centrifugal rotating table (32), a heating unit (33) and a jack support frame (34), wherein the hot-pressing punch head, the centrifugal rotating table (32), the heating unit (33) and the jack support frame are arranged from top to bottom in sequence, the centrifugal rotating table (32) and the heating unit (33) are supported on the ground through the jack support frame (34), a mold is placed at the top of the centrifugal rotating table (32), and the heating unit (33) is connected to the bottom of the centrifugal rotating table (32);
the mould (7) comprises a mould box body (71) and a piston type cover body (72) which is connected to the top of the mould box body and can stretch up and down, the piston type cover body (72) which can stretch up and down is of a transparent structure, and a pattern structure is arranged at the bottom of the piston type cover body;
the pulse drying cylinder (1), the concentration cyclone (2), the centrifugal rotating table (32) of the wood-plastic composite hot-pressing device (3), the heating unit (33) and the conveying mould device (42) of the hot-pressing platform (4) are all connected with a PLC (programmable logic controller) device (8), and the PLC device (8) controls the devices to work cooperatively;
the mould box body (71) of the mould (7) is also connected with a vacuumizing device (9), and the vacuumizing device (9) is also connected with a PLC (programmable logic controller) device (8);
the inner part of the concentration cyclone (2) close to the outlet is also connected with a buffering closing-in conical cover (23), and the bottom of the concentration cyclone (2) at the buffering closing-in conical cover (23) is also connected with a lower exhaust pipe (24) through a one-way valve (21);
the PLC control device (8) comprises a display device (81), a communication module (82) and a user control module (83), wherein the user control module (83) comprises a pulse drying control module, a concentration cyclone control module and a wood-plastic composite material hot-pressing device control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710169875.8A CN106976192B (en) | 2017-03-21 | 2017-03-21 | Wood fiber thermal modification wood-plastic composite material equipment and preparation process of wood-plastic composite material |
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| CN201710169875.8A CN106976192B (en) | 2017-03-21 | 2017-03-21 | Wood fiber thermal modification wood-plastic composite material equipment and preparation process of wood-plastic composite material |
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| CN106976192A CN106976192A (en) | 2017-07-25 |
| CN106976192B true CN106976192B (en) | 2023-04-18 |
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| CN109760252A (en) * | 2019-01-16 | 2019-05-17 | 湖北天运消音防振新材料有限公司 | A kind of reworked material fiber base solidified holding tray pressure setting |
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