CN110509367B - Continuous production line and production process of plywood - Google Patents
Continuous production line and production process of plywood Download PDFInfo
- Publication number
- CN110509367B CN110509367B CN201910892169.5A CN201910892169A CN110509367B CN 110509367 B CN110509367 B CN 110509367B CN 201910892169 A CN201910892169 A CN 201910892169A CN 110509367 B CN110509367 B CN 110509367B
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- veneer
- plywood
- layer
- wood
- shavings
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- 239000011120 plywood Substances 0.000 title claims abstract description 105
- 238000010924 continuous production Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000002023 wood Substances 0.000 claims abstract description 182
- 238000005520 cutting process Methods 0.000 claims abstract description 22
- 238000007731 hot pressing Methods 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 238000012216 screening Methods 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000032683 aging Effects 0.000 claims description 6
- 239000012466 permeate Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 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 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000011093 chipboard Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- B27D1/06—Manufacture of central layers; Form of central layers
-
- 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
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
- B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- 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
- B27N1/02—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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
Abstract
The invention discloses a continuous production line of plywood, wherein a bottom unreeling roller is positioned above a conveying device, and the bottom unreeling roller places a bottom plate on a conveying belt of the conveying device; the wood shaving laying device, the veneer placing device and the top layer placing device are all positioned above the conveying device, and the wood shaving laying device and the veneer placing device are all positioned between the bottom layer unreeling roller and the top layer unreeling device; the continuous preformer is positioned at the discharge end of the conveying device and extrudes the plywood; the veneer cutting machine is positioned at one side of the discharging end of the continuous preforming machine, the hot press is positioned at one side of the veneer cutting machine, and the production process of the plywood is also disclosed. The beneficial effects are as follows: the wood shavings used for the middle layer replace wood boards, so that the log consumption is reduced, the cost is reduced, the wood utilization rate is improved, the continuous production of the plywood is realized, the production efficiency of the plywood is improved, and the structural strength of the plywood is ensured through prepressing and hot pressing.
Description
Technical Field
The invention relates to the technical field of continuous production of plywood, in particular to a continuous production line of plywood and a production process thereof.
Background
The plywood is made up by cutting wood segment into single boards or cutting wood Fang Bao into Cheng Baomu, and then using adhesive to glue them to form three-layer or multi-layer plate material, usually using odd-layer single boards, and making the fibre directions of adjacent layers of single boards mutually perpendicular and glue them together.
The plywood is one of common materials for furniture, is one of three artificial boards, and can also be used as a material for aircrafts, ships, trains, automobiles, buildings, packaging boxes and the like. A group of veneers are typically assembled and glued perpendicular to each other in the grain direction of adjacent layers, typically with the skins and inner layers symmetrically disposed on either side of the center layer or core. The plate blank is formed by longitudinally and transversely matching the glued single plates according to the wood grain direction, and is pressed under the condition of heating or non-heating. The number of layers is typically odd and the minority is even. The difference of physical and mechanical properties in the longitudinal and transverse directions is small. Typical plywood types are three-ply board, five-ply board and the like. The plywood can improve the utilization rate of wood and is a main way for saving wood.
But all the boards are adopted for bonding, the log usage amount is higher, the produced leftover materials and waste materials are not effectively utilized, the wood usage rate is lower, and the production cost is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a continuous production line and a production process of a plywood.
The aim of the invention is achieved by the following technical scheme: a plywood continuous production line comprises a bottom unreeling roller, a wood shaving laying device, a veneer placing device, a top unreeling roller, a continuous preformer, a plate cutting machine, a hot press and a conveying device; the bottom unreeling roller is positioned above the conveying device, and the bottom unreeling roller places the bottom plate on a conveying belt of the conveying device; the wood shaving laying device, the veneer placing device and the top layer unreeling roller are all positioned above the conveying device, the wood shaving laying device and the veneer placing device are positioned between the bottom layer unreeling roller and the top layer unreeling roller, the wood shaving laying device and the veneer placing device are multiple, the wood shaving laying device is arranged between two adjacent veneer placing devices, the wood shaving laying device is arranged between the bottom layer unreeling roller and the adjacent veneer placing devices, the wood shaving laying device is arranged between the top layer unreeling roller and the adjacent veneer placing devices, and the top layer unreeling roller places the top layer plate on the wood shaving layer on the uppermost layer; the continuous preformer is positioned at the discharge end of the conveying device and extrudes the plywood; the veneer cutting machine is positioned at one side of the discharging end of the continuous preformer and cuts the plywood; the hot press is located one side of board cutting machine, and the plywood hot pressing after will cutting is firm.
Preferably, the veneer placing devices are two and are respectively a first veneer placing device and a second veneer placing device, the second veneer placing device is located in front of the first veneer placing device, the first veneer placing device is used for placing veneers and forming a first veneer layer of the plywood, the second veneer placing device is used for placing veneers and forming a second veneer layer of the plywood, the number of the wood shaving placing devices is three, and the veneer placing devices are respectively a first wood shaving placing device, a second wood shaving placing device and a third wood shaving placing device, wherein the first wood shaving placing device is located between the bottom unreeling device and the first veneer placing device, the first wood shaving placing device is used for placing wood shavings and forming a first wood shaving layer of the plywood, the second wood shaving placing device is located between the first veneer placing device and the second veneer placing device, the second wood shavings placing device is used for placing wood shavings and forming a second wood shavings layer of the plywood, the third wood shavings placing device is located between the second veneer placing device and the top unreeling roller, and the third wood shavings placing device is used for placing wood shavings and forming a third wood shavings layer of the plywood.
Preferably, the first veneer and the second veneer are both disposed laterally.
Preferably, the bottom layer plate and the top layer plate are thin plate layers, and the thickness of the thin plate layers is 0.8 mm-2.5 mm.
Preferably, the hot press is a multi-press heated by heat conducting oil, and the temperature of the heat conducting oil is 180-200 ℃.
Preferably, the wood shavings laying device comprises a wood shavings storage box, an opening for the wood shavings to pass through is arranged at the bottom of the wood shavings storage box, and the wood shavings in the wood shavings storage box are all the glued wood shavings.
The production process of the plywood comprises the following steps of:
s1: pretreating materials, namely pretreating the raw materials to obtain wood shavings, a bottom plate and a top plate which meet the requirements;
s2: paving raw materials, namely paving the raw materials from bottom to top in sequence according to the structure of the plywood, and forming a plywood blank;
s3: prepressing, namely pressing and forming a plywood blank through a continuous prepressing machine, and pressing the thickness of the plywood to a specified thickness;
s4: cutting the pressed plywood in the step S3 according to the size requirement to obtain a single plywood;
s5: and (3) hot pressing and stabilizing, namely placing the single plywood into a hot press for hot pressing, and enabling the plywood to be further compressed and stabilized.
Preferably, the material pretreatment of S1 comprises the following board pretreatment and wood shaving pretreatment, the board pretreatment comprising the following steps:
s111: drying, namely drying the thin plate in a dryer, and enabling the water content of the thin plate to be less than 12%;
s112: rolling, namely rolling the sheet dried in the step S111 by a rolling machine, and forming a bottom unreeling roller or a top unreeling roller;
the wood shavings pretreatment comprises the following steps:
s121: screening, namely screening the shavings by a screening machine, and screening the shavings with the diameter smaller than 3 cm;
s122: drying, namely drying the shavings screened in the step S121, and enabling the water content of the shavings to be less than 3%;
s123: sizing and aging, sizing the dried wood shavings in a glue mixer, and aging the wood shavings to ensure that glue solution permeates into the wood shavings.
Preferably, the paving raw material comprises the steps of:
s21: laying a bottom layer plate, unreeling the bottom layer unreeling roller, and tiling the bottom layer plate on a conveying belt of a conveying device;
s22: the first wood shaving layer is paved, and the first wood shaving paving device lays the wood shavings on the bottom plate and forms a first wood shaving layer;
s23: laying a first veneer, and transversely arranging the veneers on the first wood shaving layer side by side through a first veneer arranging device to form a first veneer layer;
s24: a second wood shaving layer is paved, and a second wood shaving paving device lays wood shavings on the first veneer layer and forms a second wood shaving layer;
s25: laying a second veneer, and transversely arranging the veneers on the second wood shaving layer side by side through a second veneer arranging device to form a second veneer layer;
s26: third wood shaving layer laying, third wood shaving laying device lays wood shavings on the second veneer layer and forms third wood shaving layer
S27: and (3) paving a top layer plate, unreeling the top layer unreeling roller, and paving the top layer plate on the third wood shaving layer.
The invention has the following advantages: according to the continuous production line of the plywood, wood shavings are used for replacing wood boards in the middle layer, so that the use amount of raw wood is reduced, the cost is reduced, leftover materials and waste materials can be made into wood shavings scraps for reuse, the leftover materials and the waste materials are not generated, and the wood utilization rate is improved; the whole production line can realize continuous production of the gelled plate, thereby ensuring the production efficiency, and pressing the plywood by adopting a prepressing and hot pressing mode, so that the plywood is convenient to form, has high structural strength, can reach the structural strength of the existing plywood bonded by the wood plate, and the weight of the produced plywood is lighter than that of the existing plywood;
the production process of the plywood realizes the continuous production of the plywood, improves the production efficiency of the plywood, and ensures the structural strength of the plywood through prepressing and hot pressing.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
In the figure, 1-bottom unreeling roller, 2-first wood shaving laying device, 3-first veneer placing device, 4-second wood shaving laying device, 5-second veneer placing device, 6-third wood shaving laying device, 7-top unreeling roller, 8-continuous preformer, 9-board cutting machine, 10-hot press, 11-conveying device, 21-bottom plate 22-first wood shaving layer, 23-first wood shaving layer, 24-second wood shaving layer, 25-second wood shaving layer, 26-third wood shaving layer, 27-top plate
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present invention and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, a continuous production line for plywood comprises a bottom unreeling roller 1, a wood shaving laying device, a veneer placing device, a top unreeling roller, a continuous preformer 8, a plate cutting machine 9, a hot press 10 and a conveying device 11, wherein in the embodiment, the continuous preformer 8, the plate cutting machine 9, the hot press 10 and the conveying device 11 are all commercially available products;
in this embodiment, the bottom layer unreeling roller 1 is located above the conveying device 11, the bottom layer unreeling roller 1 places the bottom layer plate 21 on the conveying belt of the conveying device 11, the bottom layer unreeling roller 1 is provided with a coiled bottom layer plate 21, the thickness of the bottom layer plate 21 is a thin plate, the thickness of the bottom layer plate 21 is 0.8-2.5 mm, the thickness of the bottom layer plate is determined according to customer requirements or actual production requirements, the top layer unreeling roller 7 is provided with a coiled top layer plate 27, the bottom layer plate 21 and the top layer plate 27 have the same structure, the bottom layer plate 21 and the top layer plate 27 can be mutually used in the production process, when the top layer unreeling roller 7 or the bottom layer unreeling roller 1 is manufactured, the thin plate is firstly dried, the water content of the thin plate is reduced to 12%, then the thin plate is coiled by a coiling machine, and finally the top layer unreeling roller 7 or the bottom layer unreeling roller 1 is formed;
in this embodiment, the wood shaving laying device, the veneer placing device and the top layer unreeling roller are all located above the conveying device 11, and the wood shaving laying device and the veneer placing device are all located between the bottom layer unreeling roller 1 and the top layer unreeling roller, the wood shaving laying device and the veneer placing device are all multiple, the wood shaving laying device is arranged between two adjacent veneer placing devices, the wood shaving laying device is arranged between the bottom layer unreeling roller 1 and the adjacent veneer placing device, the wood shaving laying device is arranged between the top layer unreeling roller 7 and the adjacent veneer placing device, and the top layer unreeling roller 7 places the top layer plate 27 on the wood shaving layer on the uppermost layer; further, the number of veneer placement devices is two, and the veneer placement devices are respectively a first veneer placement device 3 and a second veneer placement device 5, the second veneer placement device 5 is positioned in front of the first veneer placement device 3, the first veneer placement device 3 places veneers and forms a first veneer layer 23 of plywood, the second veneer placement device 5 places veneers and forms a second veneer layer 25 of plywood, the number of the wood shaving placement devices is three, and the wood shaving placement devices are respectively a first wood shaving placement device 2, a second wood shaving placement device 4 and a third wood shaving placement device 6, wherein the first wood shaving placement device 2 is positioned between the bottom unreeling device and the first veneer placement device 3, the first wood shaving placement device 2 is used for placing wood shavings and forms a first wood shaving layer 22 of plywood, the second wood shaving placement device 4 is positioned between the first veneer placement device 3 and the second wood shaving placement device 5, and the second wood shavings layer 24 of the wood shavings and forming the plywood are laid by the second wood shavings laying device 4, the third wood shavings device is positioned between the second veneer placing device and the top unreeling roller 7, and the third wood shavings laying device 6 lays wood shavings and forms the third wood shavings layer 26 of the plywood, in this embodiment, the wood shavings used in the first wood shavings layer 22, the second wood shavings layer 24 and the third wood shavings layer 26 are all the same, the wood shavings are put into a glue spreading machine for glue spreading, then are aged for not less than half an hour, the glue is completely permeated into the wood shavings, and when the glue spreading is performed, a flame retardant is added into the wood shavings, thereby guaranteeing the flame retardant property of the plywood, in this embodiment, the wood shavings laying device comprises a wood shavings storage box, openings through which the wood shavings pass are arranged at the bottom of the wood shavings storage box, and the wood shavings in the wood shavings storage box are the glue-spread wood shavings, when the wood shavings are distributed, the wood shavings flow out of the openings and are uniformly distributed on the corresponding bottom plate 21, the first single plate and the second single plate, and the wood shavings, the bottom plate, the single plate and the top plate are continuously paved along with the conveying of the conveying device 11, so that the continuous paving of the plywood is realized.
In this embodiment, when the continuous laying of the plywood is completed, a continuous pre-press 8 is arranged at the discharge end of the conveying device 11, the continuous pre-press 8 is positioned in front of the top plate unreeling roller, after the laying is completed, the plywood enters from the feed inlet of the continuous pre-press 8, and the gap between the paired roller groups of the continuous pre-press 8 is reduced, so that the plywood is gradually extruded, and the fluffy plywood is pressed into compact plywood;
in this embodiment, the board cutting machine 9 is located at one side of the discharge end of the continuous preformer 8, and the board cutting machine 9 cuts the plywood, after the plywood is pressed and formed by the continuous preformer 8, the plywood has a certain structural strength, the wood shavings, the veneers, the bottom plate and the top plate are adhered to each other, so that the plywood cannot scatter, the continuous plywood is cut into single chipboards meeting the requirements through the board cutting machine 9, but the chipboards cannot completely meet the production requirements, the glue solution in the plywood is not cured, the structural strength of the plywood cannot meet the design requirements, the plywood at the moment also rebounds, the thickness of the plywood can be increased, therefore, the hot press 10 is required to be used for hot pressing and stabilizing the plywood, further, the hot press 10 is located at one side of the board cutting machine 9, the hot press 10 is a multiple press heated by heat conducting oil, the temperature of the hot press is 180 ℃ to 200 ℃, the glue solution in the plywood is heated and is cured by heat transfer, so that the plywood is stable, and the thickness of the plywood is further reduced under the pressure of the hot press 10, so that the plywood meeting the size is finally formed.
In this embodiment, the first board and the second board are both placed transversely, and the board placement device may be implemented by using a board grabbing manipulator, which may, of course, also be implemented by manually placing the first board and the second board.
The production process of the plywood comprises the following steps of:
s1: material pretreatment, in which the raw materials are pretreated to obtain wood shavings, a bottom plate and a top plate meeting the requirements, wherein in the embodiment, the material pretreatment comprises the following plate pretreatment and wood shavings pretreatment, and the plate pretreatment comprises the following steps:
s111: drying, namely drying the thin plate in a dryer, and enabling the water content of the thin plate to be less than 12%;
s112: rolling, namely rolling the sheet dried in the step S111 by a rolling machine, and forming a bottom layer unreeling roller 1 or a top layer unreeling roller;
the wood shavings pretreatment comprises the following steps:
s121: screening, namely screening the shavings by a screening machine, and screening the shavings with the diameter smaller than 3 cm;
s122: drying, namely drying the shavings screened in the step S121, and enabling the water content of the shavings to be less than 3%;
s123: sizing and aging, namely sizing the dried wood shavings in a glue mixer and aging the wood shavings to ensure that glue solution permeates into the wood shavings, wherein flame retardant is uniformly contained in wood shavings scraps during sizing, so that after the glue solution is solidified, the first wood shavings layer 22, the second wood shavings layer 24 and the third wood shavings layer 26 have flame retardant effect;
s2: paving raw materials, namely paving the raw materials from bottom to top in sequence according to the structure of the plywood, and forming a plywood blank; in this embodiment, the paving raw material comprises the steps of:
s21: laying a bottom layer plate 21, unreeling the bottom layer unreeling roller 1, and laying the bottom layer plate 21 on a conveying belt of the conveying device 11;
s22: the first wood shaving layer 22 is laid, and the first wood shaving laying device 2 lays wood shavings on the bottom plate 21 and forms the first wood shaving layer 22;
s23: laying a first veneer, wherein the veneers are transversely placed on the first wood shaving layer 22 side by side through the first veneer placing device 3, and a first veneer layer 23 is formed;
s24: a second wood shaving layer 24 is laid, and the second wood shaving laying device 4 lays wood shavings on the first veneer layer 23 and forms the second wood shaving layer 24;
s25: laying a second veneer, wherein the veneers are transversely placed on the second wood shaving layer 24 side by a second veneer placing device 5, and a second veneer layer 25 is formed;
s26: third wood shaving layer 26 is laid, third wood shaving laying device 6 lays wood shavings on second veneer layer 25, and forms third wood shaving layer 26
S27: the top layer board 27 is laid, the top layer unreeling roller 7 unreels, and the top layer board 27 is laid on the third wood shaving layer 26.
S3: prepressing, namely pressing and forming a plywood blank through a continuous prepressing machine 8, and pressing the thickness of the plywood to a specified thickness;
s4: cutting the pressed plywood in the step S3 according to the size requirement to obtain a single plywood;
s5: the hot pressing is firm, places the veneer in the hot press 10 and carries out hot pressing to make the plywood further compressed and firm, the hot pressing through the hot press 10 is firm, makes the glue solution in the plywood solidification, and can also further compress the plywood of rebound, thereby produces the plywood that accords with the requirement.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (9)
1. A plywood continuous production line which characterized in that: the device comprises a bottom layer unreeling roller, a wood shaving laying device, a veneer placing device, a top layer unreeling roller, a continuous preformer, a plate cutting machine, a hot press and a conveying device;
the bottom unreeling roller is positioned above the conveying device, and the bottom unreeling roller places a bottom plate on a conveying belt of the conveying device;
the wood shaving laying device, the veneer placing device and the top layer unreeling roller are all positioned above the conveying device, the wood shaving laying device and the veneer placing device are both positioned between the bottom layer unreeling roller and the top layer unreeling roller, the wood shaving laying device and the veneer placing device are multiple, the wood shaving laying device is arranged between two adjacent veneer placing devices, the wood shaving laying device is arranged between the bottom layer unreeling roller and the adjacent veneer placing device, the wood shaving laying device is arranged between the top layer unreeling roller and the adjacent veneer placing device, and the top layer unreeling roller is used for placing a top layer plate on the wood shaving layer on the uppermost layer;
the continuous preformer is positioned at the discharge end of the conveying device and extrudes the plywood;
the veneer cutting machine is positioned at one side of the discharging end of the continuous preformer and is used for cutting the plywood;
the hot press is positioned at one side of the board cutting machine and used for firmly hot-pressing the cut plywood;
the veneer placing device is a board grabbing manipulator.
2. A plywood continuous production line according to claim 1, characterized in that: the veneer placing devices are two, namely a first veneer placing device and a second veneer placing device, the second veneer placing device is positioned in front of the first veneer placing device, the first veneer placing device is used for placing veneers and forming a first veneer layer of the plywood, the second veneer placing device is used for placing veneers and forming a second veneer layer of the plywood, the number of the veneer placing devices is three, and the veneer placing devices are respectively a first veneer placing device, a second veneer placing device and a third veneer placing device, wherein the first veneer placing device is positioned between a bottom layer unreeling roller and the first veneer placing device, the first veneer placing device is used for placing shavings and forming a first shavings layer of the plywood, the second shavings placing device is positioned between the first veneer placing device and the second veneer placing device, the second shavings placing device is used for placing shavings and forming a second shavings layer of the plywood, the third shavings placing device is positioned between the second veneer placing device and a top layer of the veneer placing roller, and the third shavings placing device is used for placing shavings and forming a third veneer layer of the veneer placing device.
3. A plywood continuous production line according to claim 2, characterized in that: the first single board and the second single board are both transversely placed.
4. A plywood continuous production line according to claim 3, characterized in that: the bottom layer plate and the top layer plate are thin plate layers, and the thickness of the bottom layer plate and the top layer plate is 0.8 mm-2.5 mm.
5. A plywood continuous production line according to claim 4, wherein: the hot press is a multiple press heated by heat conducting oil, and the temperature of the heat conducting oil is 180-200 ℃.
6. A plywood continuous production line according to claim 5, wherein: the wood shavings laying device comprises a wood shavings storage box, an opening through which wood shavings pass is formed in the bottom of the wood shavings storage box, and wood shavings in the wood shavings storage box are glued wood shavings.
7. The production process of the continuous production line of plywood according to any one of claims 1 to 6, which is characterized in that: it comprises the following steps:
s1: pretreating materials, namely pretreating the raw materials to obtain wood shavings, a bottom plate and a top plate which meet the requirements;
s2: paving raw materials, namely paving the raw materials from bottom to top in sequence according to the structure of the plywood, and forming a plywood blank;
s3: prepressing, namely pressing and forming a plywood blank through a continuous prepressing machine, and pressing the thickness of the plywood to a specified thickness;
s4: cutting the pressed plywood in the step S3 according to the size requirement to obtain a single plywood;
s5: and (3) hot pressing and stabilizing, namely placing the single plywood into the hot press for hot pressing, and enabling the plywood to be further compressed and stabilized.
8. The production process of the continuous production line of plywood as claimed in claim 7, wherein: the material pretreatment of S1 comprises the following plate pretreatment and wood shaving pretreatment, wherein the plate pretreatment comprises the following steps:
s111: drying, namely drying the thin plate in a dryer, and enabling the water content of the thin plate to be less than 12%;
s112: rolling, namely rolling the sheet dried in the step S111 by a rolling machine, and forming a bottom unreeling roller or a top unreeling roller;
the wood shaving pretreatment comprises the following steps:
s121: screening, namely screening the shavings by a screening machine, and screening the shavings with the diameter smaller than 3 cm;
s122: drying, namely drying the shavings screened in the step S121, and enabling the water content of the shavings to be less than 3%;
s123: sizing and aging, sizing the dried wood shavings in a glue mixer, and aging the wood shavings to ensure that glue solution permeates into the wood shavings.
9. The production process of the continuous production line of the plywood, according to claim 8, is characterized in that: the paving raw material comprises the following steps:
s21: laying a bottom layer plate, unreeling the bottom layer unreeling roller, and tiling the bottom layer plate on a conveying belt of a conveying device;
s22: the first wood shaving layer is paved, and the first wood shaving paving device lays the wood shavings on the bottom plate and forms a first wood shaving layer;
s23: laying a first veneer, and transversely arranging the veneers on the first wood shaving layer side by side through a first veneer arranging device to form a first veneer layer;
s24: a second wood shaving layer is paved, and a second wood shaving paving device lays wood shavings on the first veneer layer and forms a second wood shaving layer;
s25: laying a second veneer, and transversely arranging the veneers on the second wood shaving layer side by side through a second veneer arranging device to form a second veneer layer;
s26: third wood shaving layer laying, third wood shaving laying device lays wood shavings on the second veneer layer and forms third wood shaving layer
S27: and (3) paving a top layer plate, unreeling the top layer unreeling roller, and paving the top layer plate on the third wood shaving layer.
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| CN111452175B (en) * | 2020-04-14 | 2022-05-17 | 安徽精正家具制造有限公司 | Pressing equipment and process for office furniture |
| CN114536485A (en) * | 2022-02-21 | 2022-05-27 | 南宁科天新材料科技有限责任公司 | Composite board with novel structure and preparation method thereof |
| CN114670295A (en) * | 2022-04-14 | 2022-06-28 | 嘉祥锦泰木业有限公司 | Veneer plywood automatic production line |
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