CN115366215B - Straw formaldehyde-free composite board and production process thereof - Google Patents
Straw formaldehyde-free composite board and production process thereof Download PDFInfo
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- CN115366215B CN115366215B CN202211089742.7A CN202211089742A CN115366215B CN 115366215 B CN115366215 B CN 115366215B CN 202211089742 A CN202211089742 A CN 202211089742A CN 115366215 B CN115366215 B CN 115366215B
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- 239000010902 straw Substances 0.000 title claims abstract description 123
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000011094 fiberboard Substances 0.000 claims abstract description 59
- 239000012796 inorganic flame retardant Substances 0.000 claims abstract description 54
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 50
- 239000000835 fiber Substances 0.000 claims abstract description 30
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003063 flame retardant Substances 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 claims abstract description 21
- 239000002023 wood Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000003814 drug Substances 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims description 71
- 230000007246 mechanism Effects 0.000 claims description 54
- 238000004026 adhesive bonding Methods 0.000 claims description 28
- 230000001680 brushing effect Effects 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000013329 compounding Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005470 impregnation Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005034 decoration Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 14
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 77
- 238000000034 method Methods 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002025 wood fiber Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012757 flame retardant agent Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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
- 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
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
-
- 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
-
- 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
-
- 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
- B27N1/003—Pretreatment of moulding material for reducing formaldehyde gas emission
-
- 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
-
- 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a straw formaldehyde-free composite board and a production process thereof, wherein the straw formaldehyde-free composite board comprises an upper facing layer, a first inorganic flame-retardant straw fiberboard layer, a deformation-resistant integrated board layer, a second inorganic flame-retardant straw fiberboard layer and a lower facing layer which are sequentially arranged from top to bottom, the deformation-resistant integrated board layer is composed of more than three splicing battens which are arranged in parallel, and reinforcing ribs are arranged between every two adjacent splicing battens. The reinforcing ribs are implanted between the two splicing battens, the problem that the existing splicing battens are easy to deform is solved, raw materials of straw are adopted as fiber plates through the design of the first inorganic flame-retardant straw fiber plate layer and the second inorganic flame-retardant straw fiber plate layer, recycling of resources is achieved, meanwhile, inorganic flame-retardant adhesives are adopted in the production process of the inorganic flame-retardant straw fiber plate layer, meanwhile, wood flame retardant liquid medicine is also implanted into the splicing battens of the integrated board layer, and therefore the manufactured straw formaldehyde-free composite board is high in flame-retardant effect and environment-friendly.
Description
Technical Field
The invention relates to the field of composite boards, in particular to a straw formaldehyde-free composite board and a production process thereof.
Background
The composite board is characterized in that the composite board comprises an integrated board layer, wherein balance layers are compounded on the upper side and the lower side of the integrated board layer, facing layers are compounded on the two sides of the balance layers, the integrated board layer is formed by splicing battens, the spliced battens are easy to deform in the using process, the balance layers in the composite board are all made of common wood fiber boards, wood resources are increasingly scarce, non-wood materials are urgently needed to replace the common wood fiber boards, the composite board is used as a large agricultural country, straw resources are very abundant, if the straw is used for recycling the resources, the environment is protected more, meanwhile, the existing flame-retardant board is usually sprayed with flame-retardant paint on the surface of the board in the using process, the board is still combusted when the temperature is high, the flame-retardant effect is poor, and therefore the straw formaldehyde-free composite board with high anti-deformation effect and environment-friendly flame-retardant effect and the production process thereof are needed.
Disclosure of Invention
The invention aims to solve the problems in the background technology and provides a straw formaldehyde-free composite board and a production process thereof.
The technical aim of the invention is realized by the following technical scheme:
the utility model provides a straw does not have aldehyde composite sheet, includes upper facing layer, first inorganic fire-retardant straw fiberboard layer, anti-deformation integrated sheet layer, the inorganic fire-retardant straw fiberboard layer of second and lower facing layer that up and down set gradually, anti-deformation integrated sheet layer comprises the concatenation lath of parallel arrangement more than three, all is equipped with the strengthening rib between every adjacent two concatenation laths.
According to the invention, the reinforcing ribs are implanted between the two spliced battens, so that the spliced battens are supported by a plurality of reinforcing ribs when being stressed, the purpose of deformation resistance is achieved, the problem that the integrated board layer is easy to deform due to the fact that the existing spliced battens are easy to deform is solved, the first inorganic flame-retardant straw fiberboard layer and the second inorganic flame-retardant straw fiberboard layer are designed, raw materials of straw are adopted as fiberboard layers, recycling of resources is realized, meanwhile, in the production process of the inorganic flame-retardant straw fiberboard layers, inorganic flame-retardant adhesives are adopted, the manufactured inorganic flame-retardant straw fiberboard layers have flame-retardant effects, and meanwhile, wood flame retardant liquid is implanted into the spliced battens of the integrated board layers, so that the manufactured straw formaldehyde-free composite board is not only deformation-resistant, but also environment-friendly and high in flame-retardant effect.
Preferably, the upper facing layer, the first straw fiberboard layer, the anti-deformation integrated board layer, the second straw fiberboard layer and the lower facing layer are bonded through the PUR formaldehyde-free adhesive. The formaldehyde-free adhesive can be used for realizing formaldehyde-free production, so that the manufactured straw formaldehyde-free composite board is more environment-friendly.
The production process of the straw formaldehyde-free composite board is characterized by comprising the following steps of:
a) Manufacturing an inorganic flame-retardant straw fiberboard layer;
s1, manufacturing straw fibers, namely cutting the straw into sections, and crushing the sections into straw fibers;
s2, sorting, namely sorting the manufactured straw fibers, and removing unqualified straw fibers;
s3, drying, namely drying qualified straw fibers;
s4, spraying glue and stirring, namely spraying glue and stirring the dried straw fibers and the inorganic flame-retardant adhesive, and uniformly mixing to obtain a straw fiber mixture;
s5, paving, namely paving the straw fiber mixture to form a slab;
s6, prepressing, namely conveying the plate blank to a prepressing machine through a conveyor belt for prepressing forming;
s7, cold pressing and locking the die, stacking a plurality of pre-pressed formed slabs and steel backing plates, placing the slabs and the steel backing plates in a die locking clamp, and sending the slabs and the steel backing plates into a cold press for cold pressing and locking the die to prepare the inorganic flame-retardant straw fiber board;
s8, performing fixed-thickness sanding, namely performing double-sided fixed-thickness sanding on the inorganic flame-retardant straw fiberboard to finish manufacturing an inorganic flame-retardant straw fiberboard layer, and taking the inorganic flame-retardant straw fiberboard layer as a first inorganic flame-retardant straw fiberboard layer and a second inorganic flame-retardant straw fiberboard layer;
b) Manufacturing an anti-deformation integrated plate layer;
s1, cutting, namely cutting the inorganic flame-retardant straw fiber board manufactured through the steps into strips to serve as reinforcing ribs;
s2, vacuum high-pressure impregnation, namely placing the manufactured spliced batten into a high-pressure tank, vacuum sucking the wood flame retardant liquid medicine, and applying pressure into the high-pressure tank through a pressurizing device to press the wood flame retardant liquid medicine into the spliced batten, so that the spliced batten has a flame retardant function;
s3, purging, namely purging the reinforcing ribs and the splicing battens through an air gun to remove dust on the surfaces;
s4, gluing, namely spraying PUR formaldehyde-free adhesive on the reinforcing ribs through an automatic splicing device;
s5, automatic splicing, namely sequentially arranging and splicing the reinforcing ribs coated with the glue and the spliced battens through an automatic splicing device to form an anti-deformation integrated board layer,
s6, cooling, namely cooling the formed anti-deformation integrated plate layer through an automatic splicing device to finish manufacturing of the anti-deformation integrated plate layer;
c) Compounding; and compounding the upper facing layer, the first straw fiberboard layer manufactured through the steps, the deformation-resistant integrated board layer manufactured through the steps, the second straw fiberboard layer manufactured through the steps and the lower facing layer to form the straw formaldehyde-free composite board.
In the manufacturing process of the inorganic flame-retardant straw fiberboard layer, the dried straw fiber and the inorganic flame-retardant adhesive are sprayed and stirred to enable the manufactured inorganic flame-retardant straw fiberboard layer to have a flame-retardant effect, and compared with a traditional mode of spraying flame-retardant paint on the surface of a board, the inorganic flame-retardant straw fiberboard layer has stronger flame-retardant effect.
Preferably, the automatic splicing device comprises a feeding conveyor belt, a gluing mechanism, a glue brushing mechanism and a plurality of station splicing mechanisms, wherein the gluing mechanism and the glue brushing mechanism are sequentially arranged at the middle rear part of the feeding conveyor belt, the plurality of station splicing mechanisms are arranged at the terminal end of the feeding conveyor belt, the feeding conveyor belt is provided with limiting blocks uniformly distributed along the conveying direction, the side edges of splicing battens and reinforcing ribs are sequentially arranged between the two limiting blocks upwards according to the sequence, the feeding conveyor belt is automatically conveyed to the lower part of the gluing mechanism, glue is coated through the gluing mechanism, glue is brushed through the glue brushing mechanism, the glue is conveyed to the plurality of station splicing mechanisms, and splicing and cooling are performed, so that automatic splicing work of an integrated plate layer is completed, labor is reduced, and splicing efficiency is improved.
Preferably, the splicing mechanism comprises a supporting frame, a rotating motor, a hexagonal roller, a rotating shaft, a splicing conveyor belt, a blocking frame and a cover plate, wherein the hexagonal roller is arranged between the supporting frames, the rotating shaft penetrates through the middle of the hexagonal roller and is fixedly connected with the hexagonal roller, one end of the rotating shaft is fixedly connected with the supporting frame through a bearing, the other end of the rotating shaft is fixedly connected with the rotating motor, the rotating motor is fixedly connected with the supporting frame, the blocking frame is circumferentially arranged on the side wall of the hexagonal roller, the splicing conveyor belt is arranged in the blocking frame and is located below the terminal of the feeding conveyor belt, the cover plate covers the surface of the blocking frame, the blocking frame is close to a notch formed in one side of the feeding conveyor belt, a pushing plate is arranged on the notch, and one side of the pushing plate is fixedly connected with a first electric push rod.
The rotation of this case through rotating electrical machines to drive the rotation of hexagonal cylinder, thereby it is located the terminal of feeding conveyer belt to transfer one of them to keep off the frame, make the concatenation conveyer belt that keeps off in the frame be located the below of feeding conveyer belt, thereby make concatenation lath and strengthening rib upset in proper order, make the front of concatenation lath and strengthening rib upwards, the side connects gradually, carry to the end from the starting end through the concatenation conveyer belt, afterwards, the apron is covered, first electric putter promotes the push pedal, further closely laminate the side of concatenation lath and strengthening rib, afterwards rotating electrical machines are rotatory, make the fender frame that the concatenation is accomplished rotatory to the side, remove the below of feeding conveyer belt with next fender frame simultaneously, continue to pass the material concatenation, splice lath in the preceding fender frame and the further cooling of glue on the strengthening rib simultaneously, make the automatic splice in-process, can splice one side cooling, reduce operating time, push up production efficiency.
Preferably, a control cover plate opening and closing mechanism is connected between the cover plate and the baffle frame, the control cover plate opening and closing mechanism comprises a connecting rod for fixing the cover plate, one end of the connecting rod is fixedly connected with a stepping motor, the other end of the connecting rod is fixedly connected with a rolling bearing, the stepping motor is fixedly connected with the rolling bearing and the top of the baffle frame, a mounting through groove is formed in the surface of the cover plate, a cooling fan is mounted in the mounting through groove, and heat dissipation holes are uniformly distributed in the baffle frame.
The invention can automatically control the opening and closing of the cover plate through the stepping motor.
According to the invention, through the design of the cooling fan and the radiating holes, the glue cooling on the spliced battens and the reinforcing ribs can be quickened, and the adhesion of the spliced battens and the reinforcing ribs is facilitated.
Preferably, the glue brushing mechanism comprises a fixed rod, a glue brushing electric push rod and a brush, wherein the fixed rod is fixedly connected with the rack of the feeding conveyor belt, the first slide rail is arranged between the two fixed rods, the motor end of the glue brushing electric push rod is in sliding connection with the first slide rail, and the push rod end of the glue brushing electric push rod is fixedly connected with the brush.
The electric push rod for brushing glue slides on the first slide rail through the first slide rail, so that the brush can brush glue on the side surfaces of the spliced battens and the reinforcing ribs in a reciprocating mode, glue can be evenly paved on the side surfaces of the spliced battens and the reinforcing ribs, and later-stage adhesion is facilitated.
Preferably, the mounting grooves are formed in the inner sides of the fixing rods opposite to each other, clamping mechanisms are arranged in the mounting grooves and comprise clamping electric push rods and jacking blocks, the clamping electric push rods are arranged in the mounting grooves, the electric ends of the clamping electric push rods are fixedly connected with the side walls of the mounting grooves, the jacking blocks are fixedly connected with the push rod ends of the clamping electric push rods, the sections of the jacking blocks are U-shaped, and the openings of the jacking blocks are in a horn shape.
According to the invention, when the spliced batten or the reinforcing rib reaches the lower part of the glue brushing mechanism, the jacking block can clamp the two ends of the spliced batten or the reinforcing rib by pushing the clamping electric push rod, so that the phenomenon that the spliced batten or the reinforcing rib is overturned in the later glue brushing process is prevented.
According to the invention, the opening of the jacking block is horn-shaped, so that the clamping can be facilitated.
Preferably, the gluing mechanism comprises a fixing frame, a gluing electric push rod, a second sliding rail, a glue storage pipe and a glue outlet pipe, wherein the fixing frame is fixedly connected with a frame of the feeding conveyor belt, the second sliding rail is arranged on the fixing frame, the gluing electric push rod is in sliding connection with the second sliding rail, the glue storage pipe is fixedly connected with a push rod end of the gluing electric push rod, and the glue outlet pipe is arranged at the bottom of the glue storage pipe.
According to the invention, the gluing electric push rod slides on the second slide rail through the second slide rail, so that the rubber pipe is made to reciprocate, and the side surface of the splicing batten or the reinforcing rib is glued.
In summary, the invention has the following beneficial effects:
1. according to the invention, the reinforcing ribs are implanted between two spliced battens, so that the spliced battens are supported by a plurality of reinforcing ribs when being stressed, the traditional plane structure of the board is broken, the stability of the board is greatly improved, the purpose of deformation resistance is achieved, the problem that the integrated board layer is easy to deform due to the fact that the existing spliced battens are easy to deform is solved, the problem that the traditional ecological board is easy to deform is solved in a professional way, the reuse of resources is realized by adopting raw materials of the straw as the fiberboard through the design of the first inorganic flame-retardant straw fiberboard layer and the two inorganic flame-retardant straw fiberboard layers, meanwhile, in the production process of the inorganic flame-retardant straw fiberboard layers, the inorganic flame-retardant adhesive is adopted, so that the manufactured inorganic flame-retardant straw fiberboard layer has a flame-retardant effect, and meanwhile, the spliced battens of the integrated board layer are implanted with wood flame retardant liquid medicine, so that the manufactured straw formaldehyde-free composite board can resist deformation and can be environment-friendly and have a strong flame-retardant effect;
2. in the manufacturing process of the inorganic flame-retardant straw fiberboard layer, the dried straw fiber and the inorganic flame-retardant adhesive are sprayed and stirred to enable the manufactured inorganic flame-retardant straw fiberboard layer to have flame-retardant effect, compared with the traditional mode of spraying flame-retardant paint on the surface of the board, the flame-retardant effect is stronger, in the manufacturing process of the anti-deformation integrated board layer, the wood flame-retardant agent liquid medicine is pressed into the spliced batten in a vacuum high-pressure impregnation mode, so that the spliced batten has flame-retardant effect, and the overall flame-retardant effect of the board after compounding is enhanced;
3. according to the automatic splicing device, the rotating motor rotates to drive the hexagonal roller to rotate, one baffle frame is arranged at the terminal of the feeding conveyor belt, the splicing conveyor belt in the baffle frame is arranged below the feeding conveyor belt, the splicing battens and the reinforcing ribs are sequentially turned over, the front faces of the splicing battens and the reinforcing ribs are upwards, the side faces are sequentially connected, the splicing conveyor belt is conveyed to the tail end from the starting end, the cover plate is covered, the first electric push rod pushes the push plate to further tightly attach the side faces of the splicing battens and the reinforcing ribs, the rotating motor rotates to enable the baffle frame after splicing to rotate to the side face, the next baffle frame is moved to the lower side of the feeding conveyor belt, material conveying and splicing are continued, meanwhile, in the automatic splicing process, the splicing battens and the glue on the reinforcing ribs can be cooled at the same time, working time is shortened, and production efficiency is improved;
4. according to the invention, when the spliced batten or the reinforcing rib reaches the lower part of the glue brushing mechanism, the jacking block can clamp the two ends of the spliced batten or the reinforcing rib by pushing the clamping electric push rod, so that the phenomenon that the spliced batten or the reinforcing rib is overturned in the later glue brushing process is prevented.
Drawings
FIG. 1 is a schematic diagram of the splitting of the straw formaldehyde-free composite board of the present invention;
FIG. 2 is a schematic perspective view of the straw formaldehyde-free composite board of the present invention;
FIG. 3 is a schematic illustration of the production process flow of the present invention;
FIG. 4 is an overall schematic of the automatic splicing apparatus of the present invention;
FIG. 5 is a schematic view of the automatic splicing apparatus of the present invention with the cover plate and stopper removed;
FIG. 6 is a schematic view of the feed conveyor, the glue mechanism and the glue brushing mechanism of the automatic splicing apparatus of the present invention;
FIG. 7 is a schematic view of a baffle frame of the present invention;
FIG. 8 is a schematic cross-sectional view of a cover opening and closing mechanism and a cover in accordance with the present invention;
fig. 9 is a schematic top cross-sectional view of the clamping mechanism of the present invention in clamping with a splice bar or stiffener.
Detailed Description
The following specific examples are intended to be illustrative of the invention and are not intended to be limiting, as modifications of the invention will be apparent to those skilled in the art upon reading the specification without inventive contribution thereto, and are intended to be protected by the patent law within the scope of the appended claims.
The invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1-2, the straw formaldehyde-free composite board comprises an upper facing layer 1, a first inorganic flame-retardant straw fiberboard layer 2, a deformation-resistant integrated board layer 3, a second inorganic flame-retardant straw fiberboard layer 4 and a lower facing layer 5 which are sequentially arranged from top to bottom, wherein the deformation-resistant integrated board layer 3 is composed of more than three splicing battens 31 which are arranged in parallel, and the upper facing layer, the first straw fiberboard layer 1, the deformation-resistant integrated board layer 2, the second straw fiberboard layer 3 and the lower facing layer 4 are bonded through PUR formaldehyde-free adhesives.
The PUR formaldehyde-free adhesive is heated and melted into fluid under the condition of inhibiting chemical reaction so as to be convenient for coating; the adhesive layer is condensed to play a role of adhesion after the two adherends are adhered and cooled; then, by means of the reaction of the moisture existing in the air and the moisture attached to the surface of the adherend, the chain is extended to generate a high molecular polymer with high cohesive force, so that the adhesive force, heat resistance, low temperature resistance and the like are remarkably improved.
The moisture-curing PUR formaldehyde-free adhesive is prepared by taking a terminal-NCO group prepolymer as a base material and adding additives such as thermoplastic resin, tackifying resin, antioxidant, catalyst, filler and the like which do not react with isocyanate groups. The adhesive is heated and melted into fluid, the fluid is coated on the surface of a substrate to be adhered, 2 objects to be adhered are adhered, the adhesion is formed after cooling, and then moisture in air or trace moisture in the substrate to be adhered and other active hydrogen-containing compounds react with NCO groups to form a polymer with a cross-linked network structure and high cohesive force, so that the adhesion is further enhanced. the-NCO groups in isocyanates react very readily with compounds containing active hydrogens.
The reasons for the application of PUR formaldehyde-free adhesives are: the adhesive has the advantages of strong use reliability, good uniformity and simple bonding process. In addition, the organic solvent is not used, so that the environment is not polluted, and the method is popular with users. Most hot melt adhesives are heated, can be reheated and used after being attached, are reversible, and PUR is moisture-reactive hot melt adhesive, and can react with moisture in air after being attached, and are irreversible (namely, can not be melted after being heated) after being attached, so that the PUR is more resistant to high and low temperatures.
As shown in fig. 3, a production process of the straw formaldehyde-free composite board is characterized by comprising the following steps:
a) Manufacturing an inorganic flame-retardant straw fiberboard layer;
s1, manufacturing straw fibers, namely cutting the straw into sections, and crushing the sections into straw fibers;
s2, sorting, namely sorting the manufactured straw fibers, and removing unqualified straw fibers;
s3, drying, namely drying qualified straw fibers;
s4, spraying glue and stirring, namely spraying glue and stirring the dried straw fibers and the inorganic flame-retardant adhesive, and uniformly mixing to obtain a straw fiber mixture;
s5, paving, namely paving the straw fiber mixture to form a slab;
s6, prepressing, namely conveying the plate blank to a prepressing machine through a conveyor belt for prepressing forming;
s7, cold pressing and locking the die, stacking a plurality of pre-pressed formed slabs and steel backing plates, placing the slabs and the steel backing plates in a die locking clamp, and sending the slabs and the steel backing plates into a cold press for cold pressing and locking the die to prepare the inorganic flame-retardant straw fiber board;
s8, performing fixed-thickness sanding, namely performing double-sided fixed-thickness sanding on the inorganic flame-retardant straw fiberboard to finish manufacturing an inorganic flame-retardant straw fiberboard layer, and taking the inorganic flame-retardant straw fiberboard layer as a first inorganic flame-retardant straw fiberboard layer and a second inorganic flame-retardant straw fiberboard layer;
b) Manufacturing an anti-deformation integrated plate layer;
s1, cutting, namely cutting the inorganic flame-retardant straw fiber board manufactured in the step a into strips to serve as reinforcing ribs 32;
s2, vacuum high-pressure impregnation, namely placing the manufactured spliced batten into a high-pressure tank, vacuum sucking the wood flame retardant liquid medicine, and applying pressure into the high-pressure tank through a pressurizing device to press the wood flame retardant liquid medicine into the spliced batten, so that the spliced batten has a flame retardant function;
s3, purging, namely purging the reinforcing ribs 32 and the splicing battens 31 through an air gun to remove dust on the surfaces;
s4, gluing, namely spraying PUR formaldehyde-free adhesive on the reinforcing ribs 32 through the automatic splicing device 6;
s5, automatic splicing, namely sequentially arranging and splicing the reinforcing ribs 32 coated with glue and the splicing battens 31 through an automatic splicing device 6 to form the anti-deformation integrated board layer 3,
s6, cooling, namely cooling the formed anti-deformation integrated board layer 3 through an automatic splicing device 6 to finish manufacturing the anti-deformation integrated board layer;
c) Compounding; and (c) compositing the upper facing layer 1, the first straw fiberboard layer 1 manufactured in the step a, the deformation-resistant integrated board layer 3 manufactured in the step b, the second straw fiberboard layer 3 manufactured in the step a and the lower facing layer 4 to form the straw formaldehyde-free composite board. The hardness of the reinforcing rib manufactured by the method is greater than that of the spliced batten.
As shown in fig. 4, the automatic splicing device 6 includes a feeding conveyor 61, a glue coating mechanism 63, a glue brushing mechanism 64, and a plurality of station splicing mechanisms 65, wherein the glue coating mechanism 63 and the glue brushing mechanism 64 are sequentially disposed at the middle and rear parts of the feeding conveyor 61, the plurality of station splicing mechanisms 65 are disposed at the terminal end of the feeding conveyor 61, and the feeding conveyor 61 is uniformly distributed with limiting blocks 66 along the conveying direction.
As shown in fig. 5-9, the plurality of station splicing mechanisms 65 include a supporting frame 651, a rotating motor 652, a hexagonal roller 653, a rotating shaft 654, a splicing conveyor 655, a blocking frame 656, and a cover plate 657, the hexagonal roller 653 is disposed between the supporting frames 651, the rotating shaft 654 penetrates through the middle of the hexagonal roller 653 and is fixedly connected with the hexagonal roller 653, one end of the rotating shaft 654 is fixedly connected with the supporting frames 651 through a bearing, the other end of the rotating shaft 654 is fixedly connected with the rotating motor 652, the rotating motor 652 is fixedly connected with the supporting frames 651, the blocking frame 656 is circumferentially arranged on the side wall of the hexagonal roller 653, the splicing conveyor 655 is disposed in the blocking frame 656 and is located below the terminal of the feeding conveyor 61, the cover plate 657 is covered and disposed on the surface of the blocking frame 656, the blocking frame 656 is close to one side of the feeding conveyor 61 and is formed with a notch 658, one side of the notch 658 is fixedly connected with a first electric push rod 650, the first electric push rod 650 is fixedly connected with one side of the supporting frames 651, the first electric push rod 650 is tightly supported by the electric push rod 647, the electric push rod is fixedly connected with the electric rod 648, and the electric push rod is tightly supported by the electric rod 645, and the electric rod is fixedly supported by the electric rod 645.
As shown in fig. 8, a control cover plate opening and closing mechanism 67 is connected between the cover plate 657 and the baffle frame 656, the control cover plate opening and closing mechanism 67 includes a connecting rod 671 for fixing the cover plate, one end of the connecting rod 671 is fixedly connected with a stepper motor 672, the other end is fixedly connected with a rolling bearing 673, the stepper motor 672, the rolling bearing 673 and the top of the baffle frame 656 are fixedly connected, a mounting through groove 71 is formed on the surface of the cover plate 657, a cooling fan 72 is mounted in the mounting through groove 71, and heat dissipation holes 73 are uniformly distributed in the baffle frame 656.
As shown in fig. 6, the glue brushing mechanism 64 includes a fixing rod 641, a glue brushing electric push rod 642, a brush 643, a first sliding rail 644, the fixing rod 641 is fixedly connected with the frame of the feeding conveyor 61, the first sliding rail 644 is disposed between the two fixing rods 641, a motor end of the glue brushing electric push rod 642 is slidably connected with the first sliding rail 644, a push rod end of the glue brushing electric push rod 642 is fixedly connected with the brush 643, the glue coating mechanism 63 includes a fixing frame 631, a glue coating electric push rod 632, a second sliding rail 633, a glue storage tube 634 and a glue outlet tube 635, the fixing frame 631 is fixedly connected with the frame of the feeding conveyor 61, the second sliding rail 633 is disposed on the fixing frame 631, the glue coating electric push rod 632 is slidably connected with the second sliding rail 633, the glue storage tube 634 is fixedly connected with a push rod end of the glue coating electric push rod 632, and the glue outlet tube 635 is disposed at the bottom of the storage tube 634.
Working principle: when the automatic splicing device 6 is used, the splicing batten 31 and the reinforcing rib 32 are sequentially placed between the two limiting blocks 66 of the feeding conveyor belt 61, the sections of the splicing batten 31 and the reinforcing rib 32 are rectangular, when the automatic splicing device is placed, the side faces of the splicing batten 31 and the reinforcing rib 32 are upwards (namely, the side faces of the narrow sides are upwards, the automatic splicing device can facilitate the overturning of the later stages), the later stages are convenient for gluing, then the feeding conveyor belt 61 moves to the lower side of the gluing mechanism 63 with the splicing batten 31 or the reinforcing rib 32, the position of the gluing mechanism 63 is provided with an induction sensor, when the feeding conveyor belt 61 stops transmitting when the feeding conveyor belt 63 moves to the lower side of the gluing mechanism 63, the second sliding rail 633 moves with the rubber outlet pipe 635, the side faces of the splicing batten are glued, after the gluing is finished, the glued splicing batten moves to the gluing mechanism 64, meanwhile, the reinforcing rib 32 moves to the lower part of the gluing mechanism 64, when the splicing lath 31 reaches the lower part of the gluing mechanism 64, the position of the gluing mechanism 64 is also provided with an induction sensor, which is not described in detail in the scheme, so that the clamping electric push rod 647 in the fixed rod 641 moves towards the two ends of the splicing lath 31 with the jacking block 648 to clamp the splicing lath 31, the splicing lath 31 is prevented from turning over in the later glue brushing process, then the brush 643 moves along the second sliding rail 644 to brush glue the side surface of the splicing lath 31 so that glue is uniformly distributed above the splicing lath 31, the gluing mechanism 63 glues the side surface of the reinforcing rib 32 while the glue is brushing, after the glue brushing is finished, the clamping electric push rod 647 moves into the fixed rod 641 so that the jacking block 648 is separated from the splicing lath 31, and then the feeding conveyor 61 continues to act, the splicing lath 31 and the reinforcing rib 32 are enabled to move towards the next direction, when the splicing lath 31 and the reinforcing rib 32 sequentially move to the tail end, the splicing lath 31 and the reinforcing rib 32 sequentially drop to the upper side of the splicing conveyor belt 655, due to the fact that the two conveyor belts are provided with the height difference, the splicing lath 31 or the reinforcing rib 32 can be overturned to face upwards from the side face, then move towards the right side of the baffle frame 656, places with glue face towards the right side, when the set quantity is accumulated, the feeding conveyor belt 61 stops transporting, the stepping motor 672 is covered with the baffle frame 656, the electric push rod 650 is moved towards the right side with the push rod 659, the splicing lath 31 and the reinforcing rib 32 are extruded, the splicing lath 31 and the reinforcing rib 32 can be tightly attached, then the rotating motor 652 is driven to rotate, the hexagonal roller 653 is driven to rotate, the baffle frame 656 below the feeding conveyor belt 61 is rotated to the lower side of the baffle frame 656, the glue in the former baffle frame is continuously transported, when the preset quantity is accumulated, the splicing lath 31 and the reinforcing rib 32 in the former baffle frame is automatically cooled by the cooling fan, the whole cooling process is completed, the cooling process is needed, and the cooling process is completed, and the cooling is completed.
Claims (8)
1. The straw formaldehyde-free composite board is characterized by comprising an upper facing layer (1), a first inorganic flame-retardant straw fiberboard layer (2), an anti-deformation integrated board layer (3), a second inorganic flame-retardant straw fiberboard layer (4) and a lower facing layer (5) which are sequentially arranged from top to bottom, wherein the anti-deformation integrated board layer (3) consists of more than three splicing battens (31) which are arranged in parallel, and reinforcing ribs (32) are arranged between every two adjacent splicing battens (31);
the upper decoration layer, the first straw fiber board layer (1), the anti-deformation integrated board layer (2), the second straw fiber board layer (3) and the lower decoration layer (4) are bonded through PUR formaldehyde-free adhesives between the splicing battens (31) and the reinforcing ribs (32);
the production process of the straw formaldehyde-free composite board comprises the following steps:
a) Manufacturing an inorganic flame-retardant straw fiberboard layer;
s1, manufacturing straw fibers, namely cutting the straw into sections, and crushing the sections into straw fibers;
s2, sorting, namely sorting the manufactured straw fibers, and removing unqualified straw fibers;
s3, drying, namely drying qualified straw fibers;
s4, spraying glue and stirring, namely spraying glue and stirring the dried straw fibers and the inorganic flame-retardant adhesive, and uniformly mixing to obtain a straw fiber mixture;
s5, paving, namely paving the straw fiber mixture to form a slab;
s6, prepressing, namely conveying the plate blank to a prepressing machine through a conveyor belt for prepressing forming;
s7, cold pressing and locking the die, stacking a plurality of pre-pressed formed slabs and steel backing plates, placing the slabs and the steel backing plates in a die locking clamp, and sending the slabs and the steel backing plates into a cold press for cold pressing and locking the die to prepare the inorganic flame-retardant straw fiber board;
s8, performing fixed-thickness sanding, namely performing double-sided fixed-thickness sanding on the inorganic flame-retardant straw fiberboard to finish manufacturing an inorganic flame-retardant straw fiberboard layer, and taking the inorganic flame-retardant straw fiberboard layer as a first inorganic flame-retardant straw fiberboard layer and a second inorganic flame-retardant straw fiberboard layer;
b) Manufacturing an anti-deformation integrated plate layer;
s1, cutting, namely cutting the inorganic flame-retardant straw fiber board manufactured in the step (a) into strips to serve as reinforcing ribs (32);
s2, vacuum high-pressure impregnation, namely placing the manufactured spliced batten into a high-pressure tank, vacuum sucking the wood flame retardant liquid medicine, and applying pressure into the high-pressure tank through a pressurizing device to press the wood flame retardant liquid medicine into the spliced batten, so that the spliced batten has a flame retardant function;
s3, purging, namely purging the reinforcing ribs (32) and the splicing battens (31) through an air gun to remove dust on the surfaces;
s4, gluing, namely spraying PUR aldehyde-free adhesive on the reinforcing ribs (32) through an automatic splicing device (6);
s5, automatic splicing, namely sequentially arranging and splicing the reinforcing ribs (32) coated with the glue and the splicing battens (31) through an automatic splicing device (6) to form an anti-deformation integrated board layer (3),
s6, cooling, namely cooling the formed anti-deformation integrated board layer (3) through an automatic splicing device (6) to finish manufacturing of the anti-deformation integrated board layer;
c) Compounding; and (3) compounding the upper facing layer (1), the first straw fiberboard layer (1) manufactured in the step (a), the deformation-resistant integrated board layer (3) manufactured in the step (b), the second straw fiberboard layer (3) manufactured in the step (a) and the lower facing layer (4) to form the straw formaldehyde-free composite board.
2. The straw formaldehyde-free composite board according to claim 1, wherein the automatic splicing device (6) comprises a feeding conveyor belt (61), a gluing mechanism (63), a glue brushing mechanism (64) and a plurality of station splicing mechanisms (65), the gluing mechanism (63) and the glue brushing mechanism (64) are sequentially arranged at the middle and rear parts of the feeding conveyor belt (61), the plurality of station splicing mechanisms (65) are arranged at the terminal end of the feeding conveyor belt (61), and limiting blocks (66) are uniformly distributed on the feeding conveyor belt (61) along the conveying direction in an array mode.
3. The straw formaldehyde-free composite board according to claim 2, wherein the plurality of station splicing mechanisms (65) comprise a supporting frame (651), a rotating motor (652), hexagonal rollers (653), rotating shafts (654), splicing conveyor belts (655), baffle frames (656) and cover plates (657), the hexagonal rollers (653) are arranged between the supporting frames (651), the rotating shafts (654) penetrate through the middle parts of the hexagonal rollers (653) and are fixedly connected with the hexagonal rollers (653), one ends of the rotating shafts (654) are fixedly connected with the supporting frames (651) through bearings, the other ends of the rotating shafts (654) are fixedly connected with the rotating motor (652), the rotating motor (652) is fixedly connected with the supporting frames (651), the baffle frames (656) are arranged on the side walls of the hexagonal rollers (653) in a circumferential array, the splicing conveyor belts (655) are arranged in the baffle frames (656) and are located below the terminals of the feeding conveyor belts (61), and the cover plates (7) are arranged on the surfaces of the baffle frames (6553).
4. A straw formaldehyde-free composite board according to claim 3, characterized in that a control cover plate opening and closing mechanism (67) is connected between the cover plate (657) and the baffle frame (656), the control cover plate opening and closing mechanism (67) comprises a connecting rod (671) for fixing the cover plate, one end of the connecting rod (671) is fixedly connected with a stepping motor (672), the other end of the connecting rod is fixedly connected with a rolling bearing (673), the stepping motor (672) is fixedly connected with the rolling bearing (673) and the top of the baffle frame (656), a mounting through groove (71) is formed in the surface of the cover plate (657), a cooling fan (72) is mounted in the mounting through groove (71), and cooling holes (73) are uniformly distributed in the baffle frame (656).
5. A straw formaldehyde-free composite board according to claim 3, characterized in that a gap (658) is formed on one side of the baffle frame (656) close to the feeding conveyor belt (61), a push plate (659) is arranged on the gap (658), and a first electric push rod (650) is fixedly connected to one side of the push plate.
6. A straw formaldehyde-free composite board according to claim 3, characterized in that the glue brushing mechanism (64) comprises a fixed rod (641), a glue brushing electric push rod (642) and a brush (643), a first sliding rail (644), the fixed rod (641) is fixedly connected with the frame of the feeding conveyor belt (61), the first sliding rail (644) is arranged between the two fixed rods (641), the motor end of the glue brushing electric push rod (642) is in sliding connection with the first sliding rail (644), and the push rod end of the glue brushing electric push rod (642) is fixedly connected with the brush (643).
7. The straw formaldehyde-free composite board according to claim 6, wherein two opposite inner sides of the fixing rods (641) are provided with mounting grooves (645), clamping mechanisms (646) are arranged in the mounting grooves (645), each clamping mechanism comprises a clamping electric push rod (647) and a jacking block (648), the clamping electric push rod (647) is arranged in the mounting groove (645) and an electric end of the clamping electric push rod (647) is fixedly connected with the side wall of the mounting groove (645), the jacking blocks (648) are fixedly connected with the push rod ends of the clamping electric push rods (647), the section of each jacking block (648) is U-shaped, and the opening of each jacking block (648) is in a horn shape.
8. The straw formaldehyde-free composite board according to claim 2, wherein the gluing mechanism (63) comprises a fixing frame (631), a gluing electric push rod (632), a second sliding rail (633), a glue storage tube (634) and a glue outlet tube (635), the fixing frame (631) is fixedly connected with a frame of the feeding conveyor belt (61), the second sliding rail (633) is arranged on the fixing frame (631), the gluing electric push rod (632) is slidably connected with the second sliding rail (633), the glue storage tube (634) is fixedly connected with a push rod end of the gluing electric push rod (632), and the glue outlet tube (635) is arranged at the bottom of the glue storage tube (634).
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