阅读说明：本技术 一种无醛阻燃胶合板及其制备方法和装置 (Formaldehyde-free flame-retardant plywood and preparation method and device thereof ) 是由 许学山 于 2021-09-13 设计创作，主要内容包括：本发明涉及人造板加工制造技术领域,具体涉及一种无醛阻燃胶合板及其制备方法和装置；两组夹持组件对称设置,粘合层与芯板固定连接,第一夹持板、贴合板和第二夹持板分别设置于粘合层上,贴合板的两端分别与第一夹持板和第二夹持板固定连接,依次将每块单板进行烘干,并清理单板表面的木屑,制备胶黏层,使用胶黏层将每相邻两块单板之间进行粘合,将粘有胶黏层的多块单板进行热压处理,制得芯板,往芯板上固定夹持组件,制得无醛阻燃胶合板,制出的无醛阻燃胶合板具有无醛、阻燃、结构稳固的特点,实现了避免胶合板边缘易分层,提高产品性能。(The invention relates to the technical field of artificial board processing and manufacturing, in particular to an aldehyde-free flame-retardant plywood and a preparation method and a device thereof; two sets of centre gripping subassembly symmetry sets up, bond line and core fixed connection, first grip block, attaching plate and second grip block set up respectively on the bond line, attaching plate's both ends respectively with first grip block and second grip block fixed connection, in proper order dry every veneer, and the saw-dust on clearance veneer surface, preparation gluing layer, use gluing layer to bond between per two adjacent veneers, the polylith veneer that will be stained with gluing layer carries out hot pressing, make the core, fixed centre gripping subassembly on toward the core, make the fire-retardant plywood of no aldehyde, the fire-retardant plywood of no aldehyde of making has no aldehyde, it is fire-retardant, the characteristics that the structure is firm, avoided the easy layering in plywood edge has been realized, improve product property.)

1. A formaldehyde-free flame-retardant plywood is characterized in that,

the formaldehyde-free flame-retardant plywood comprises two groups of clamping assemblies and a core board, wherein each group of clamping assemblies is arranged on two sides of the core board respectively, and the two groups of clamping assemblies are symmetrically arranged;

the clamping assembly comprises a bonding layer, a first clamping plate, an attaching plate and a second clamping plate, the bonding layer is fixedly connected with the core plate and is located on the outer side wall of the core plate, the first clamping plate is arranged on the bonding layer, the attaching plate is arranged on the second clamping plate, and two ends of the attaching plate are fixedly connected with the first clamping plate and the second clamping plate respectively.

2. The formaldehyde-free flame-retardant plywood of claim 1,

the core plate comprises a plurality of single plates and a plurality of adhesive layers, wherein each single plate is arranged at intervals, the adhesive layers are arranged between every two adjacent single plates, and the clamping assemblies are clamped on the single plates on the two outer sides.

3. The method for preparing the formaldehyde-free flame-retardant plywood according to claim 2, wherein the method comprises the following steps:

drying each veneer in sequence, and cleaning the wood chips on the surface of the veneer;

preparing the adhesive layer, and bonding every two adjacent single plates by using the adhesive layer;

carrying out hot-pressing treatment on the plurality of veneers adhered with the adhesive layers to obtain the core board;

and fixing the clamping assembly on the core board to obtain the formaldehyde-free flame-retardant plywood.

4. The method for preparing the formaldehyde-free flame-retardant plywood as claimed in claim 3, wherein in the step of preparing the adhesive layer and bonding every two adjacent veneers by using the adhesive layer, the adhesive layer is prepared by:

adding purified water into magnesium chloride to generate a solution, standing and heating;

adding polyvinyl alcohol into the solution until the polyvinyl alcohol is completely dissolved to obtain a glue solution;

and (3) waiting for the glue solution to be cooled to room temperature, adding magnesium oxide into the glue solution, and fully stirring to obtain the adhesive layer.

5. The method for preparing aldehyde-free fire-retardant plywood as claimed in claim 4, wherein in the step of adding purified water to magnesium chloride to form a solution, standing and then heating:

the heating temperature is 30 deg.C, and the heating time is 30 min.

6. The method for preparing the formaldehyde-free flame-retardant plywood as claimed in claim 5, wherein after the glue solution is cooled to room temperature, magnesium oxide is added into the glue solution and fully stirred to prepare the adhesive layer, the method comprises the following steps:

the stirring time is 1h, and the stirring speed is 400 r/min.

7. The device for preparing formaldehyde-free flame-retardant plywood according to claim 6,

fire-retardant plywood preparation facilities of no aldehyde includes support frame, stirred tank, damper, places the board, rotates motor, speed reducer, axis of rotation and stirring piece, the support frame with stirred tank fixed connection, and be located stirred tank's below, damper's quantity is the multiunit, every group damper respectively with stirred tank fixed connection, place board and every group damper fixed connection, rotate the motor with place board fixed connection, and be located place the lateral wall of board, the speed reducer with the output fixed connection who rotates the motor, the one end of axis of rotation with the output fixed connection of speed reducer, the quantity of stirring piece is a plurality of, every the stirring piece respectively with the lateral wall fixed connection of axis of rotation.

8. The formaldehyde-free flame-retardant plywood manufacturing apparatus of claim 7,

damping component includes damping spring, urceolus and interior pole, damping spring's one end with stirred tank fixed connection, damping spring's the other end with place board fixed connection, the urceolus with stirred tank fixed connection, the one end of interior pole with urceolus sliding connection, the other end of interior pole with place board fixed connection, just damping spring encloses respectively in the urceolus with the lateral wall of interior pole.

Technical Field

The invention relates to the technical field of artificial board processing and manufacturing, in particular to an aldehyde-free flame-retardant plywood and a preparation method and device thereof.

Background

Plywood is a three-layer or multi-layer plate material made up by using wood segments and making them be rotary-cut into single board or sliced into thin wood and using adhesive to make them be glued together, and usually using odd number of layers of single board and making the fibre directions of adjacent layers of single board be mutually perpendicular.

At present, a veneer is soaked in a flame-retardant liquid to prepare the veneer with flame-retardant performance, but the edges of the veneer are easy to be layered, and the product performance is poor.

Disclosure of Invention

The invention aims to provide an aldehyde-free flame-retardant plywood and a preparation method and device thereof, and aims to solve the technical problems that the edge of the plywood in the prior art is easy to layer and the product performance is poor.

In order to achieve the purpose, the formaldehyde-free flame-retardant plywood adopted by the invention comprises two groups of clamping assemblies and a core plate, wherein each group of clamping assemblies is respectively arranged on two sides of the core plate, and the two groups of clamping assemblies are symmetrically arranged;

the clamping assembly comprises a bonding layer, a first clamping plate, an attaching plate and a second clamping plate, the bonding layer is fixedly connected with the core plate and is located on the outer side wall of the core plate, the first clamping plate is arranged on the bonding layer, the attaching plate is arranged on the second clamping plate, and two ends of the attaching plate are fixedly connected with the first clamping plate and the second clamping plate respectively.

The core plate comprises a plurality of single plates and a plurality of adhesive layers, wherein the single plates are arranged at intervals, the adhesive layers are arranged between every two adjacent single plates, and the clamping assemblies are clamped on the single plates on the two outer sides.

The invention also provides a preparation method of the formaldehyde-free flame-retardant plywood, which comprises the following steps:

drying each veneer in sequence, and cleaning the wood chips on the surface of the veneer;

preparing the adhesive layer, and bonding every two adjacent single plates by using the adhesive layer;

carrying out hot-pressing treatment on the plurality of veneers adhered with the adhesive layers to obtain the core board;

and fixing the clamping assembly on the core board to obtain the formaldehyde-free flame-retardant plywood.

In the step of preparing the adhesive layer and bonding every two adjacent veneers by using the adhesive layer, the preparation method for preparing the adhesive layer comprises the following steps:

adding purified water into magnesium chloride to generate a solution, standing and heating;

adding polyvinyl alcohol into the solution until the polyvinyl alcohol is completely dissolved to obtain a glue solution;

and (3) waiting for the glue solution to be cooled to room temperature, adding magnesium oxide into the glue solution, and fully stirring to obtain the adhesive layer.

Wherein, in the steps of adding purified water into magnesium chloride to generate a solution, standing and heating:

the heating temperature is 30 deg.C, and the heating time is 30 min.

After the glue solution is cooled to room temperature, adding magnesium oxide into the glue solution, and fully stirring to obtain the adhesive layer:

the stirring time is 1h, and the stirring speed is 400 r/min.

The invention also provides a device for preparing the formaldehyde-free flame-retardant plywood, which comprises a support frame, a stirring kettle, a damping component, a placing plate, a rotating motor, a speed reducer, a rotating shaft and a stirring block, wherein the support frame is fixedly connected with the stirring kettle, and are positioned below the stirring kettle, the number of the damping components is multiple, each group of the damping components is respectively and fixedly connected with the stirring kettle, the placing plate is fixedly connected with each group of the shock absorption components, the rotating motor is fixedly connected with the placing plate, and is positioned on the outer side wall of the placing plate, the speed reducer is fixedly connected with the output end of the rotating motor, one end of the rotating shaft is fixedly connected with the output end of the speed reducer, the number of the stirring blocks is multiple, and each stirring block is fixedly connected with the outer side wall of the rotating shaft.

Wherein, damper includes damping spring, urceolus and interior pole, damping spring's one end with stirred tank fixed connection, damping spring's the other end with place board fixed connection, the urceolus with stirred tank fixed connection, the one end of interior pole with urceolus sliding connection, the other end of interior pole with place board fixed connection, just damping spring surround respectively in the urceolus with the lateral wall of interior pole.

According to the formaldehyde-free flame-retardant plywood and the preparation method and device thereof, the core board is manufactured through a hot pressing process, the bonding layer is arranged on the outer side wall of the core board, the first clamping board, the attaching board and the second clamping board are sequentially fixed on the core board, the attaching board is connected with the first clamping board and the second clamping board, the clamping assemblies are respectively arranged on two sides of the core board, the clamping assemblies prevent the core board from being layered, and therefore the performance of the formaldehyde-free flame-retardant plywood is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the formaldehyde-free flame-retardant plywood of the present invention.

Fig. 2 is a flow chart showing the steps of the method for manufacturing the formaldehyde-free flame-retardant plywood of the invention.

Fig. 3 is a flow chart illustrating the steps of the method for preparing the adhesive layer of the present invention.

Fig. 4 is a schematic structural view of an apparatus for manufacturing formaldehyde-free flame-retardant plywood according to the present invention.

Fig. 5 is a structural sectional view of an apparatus for manufacturing formaldehyde-free fire-retardant plywood according to the present invention.

Fig. 6 is an enlarged view of a portion of the structure of fig. 5 according to the present invention.

100-formaldehyde-free flame-retardant plywood, 101-formaldehyde-free flame-retardant plywood preparation device, 1-clamping assembly, 2-core board, 3-support frame, 4-stirring kettle, 5-damping assembly, 6-placing board, 7-rotating motor, 8-speed reducer, 9-rotating shaft, 11-bonding layer, 12-first clamping board, 13-attaching board, 14-second clamping board, 21-veneer, 22-adhesive layer, 51-damping spring, 52-outer cylinder, 53-inner rod, 1011-stirring block, 1012-extraction pump and 1013-transport pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, the formaldehyde-free flame-retardant plywood 100 provided by the invention comprises two groups of clamping assemblies 1 and a core board 2, wherein each group of clamping assemblies 1 is respectively arranged on two sides of the core board 2, and the two groups of clamping assemblies 1 are symmetrically arranged;

the clamping assembly 1 comprises an adhesive layer 11, a first clamping plate 12, an attaching plate 13 and a second clamping plate 14, the adhesive layer 11 is fixedly connected with the core plate 2 and is located on the outer side wall of the core plate 2, the attaching plate 13 is fixedly connected with the second clamping plate 14, the two ends of the attaching plate 13 are fixedly connected with the first clamping plate 12 and the second clamping plate 14 respectively, and the outer side wall of the core plate 2 is located on the adhesive layer 11.

In this embodiment, the core 2 adopts the hot pressing technology preparation to form, the bond line 11 set up in the lateral wall of core 2, and will in proper order first grip block 12 the attaching plate 13 with the second grip block 14 is fixed in on the core 2, attaching plate 13 connects first grip block 12 with the second grip block 14, be provided with respectively on the both sides of core 2 centre gripping subassembly 1, centre gripping subassembly 1 prevents the layering of core 2, thereby improves the fire-retardant plywood 100's of no aldehyde performance it is fixed on the core 2 behind the centre gripping subassembly 1, use the technology of colding pressing to handle, strengthen the stability of fire-retardant plywood 100's of no aldehyde structure, extension product life has realized avoiding the easy layering in plywood edge, has improved product performance.

Further, the core plate 2 includes a plurality of veneers 21 and a plurality of adhesive layers 22, each veneer 21 is arranged at intervals, every two adjacent veneers 21 are provided with the adhesive layer 22 therebetween, and the clamping component 1 is clamped on the two outer veneers 21.

In this embodiment, the adhesive layer 22 is disposed between every two adjacent single plates 21, and the core plate 2 is manufactured by a hot pressing process after the adhesion is completed, wherein the core plate 2 has a characteristic of strong structural stability.

Referring to fig. 2 to 3, the present invention also provides a method for preparing the formaldehyde-free flame retardant plywood 100, comprising the following steps:

s1: drying each veneer 21 in sequence, and cleaning the wood chips on the surface of the veneer 21;

s2: preparing the adhesive layer 22, and bonding every two adjacent single plates 21 by using the adhesive layer 22;

s3: carrying out hot-pressing treatment on the plurality of veneers 21 adhered with the adhesive layers 22 to obtain the core board 2;

s4: performing edge trimming on the core board 2;

s5: and fixing the clamping assembly 1 on the core board 2, and performing cold pressing treatment to obtain the formaldehyde-free flame-retardant plywood 100.

In this embodiment, veneer 21 soaks in the fire-retardant liquid, again in proper order every veneer 21 dries, and clears up the saw-dust on veneer 21 surface, then preparation the gluing layer 22 uses gluing layer 22 will every adjacent two bond between the veneer 21, will be stained with again gluing layer 22's polylith veneer 21 carries out hot pressing, makes the core 2, then will core 2 is according to the limit, at last past fix on core 2 centre gripping subassembly 1, and carry out the cold pressing and handle make no aldehyde fire-retardant plywood 100, what make no aldehyde fire-retardant plywood 100 has no aldehyde, fire-retardant, the characteristics that the structure is firm, has realized avoiding the easy layering in plywood edge, improves product property ability.

Further, in the step of preparing the adhesive layer 22 and bonding every two adjacent single plates 21 by using the adhesive layer 22, the preparation method for preparing the adhesive layer 22 is as follows:

s21: adding purified water into magnesium chloride to obtain solution, standing, and heating at 30 deg.C for 30 min;

s22: adding polyvinyl alcohol into the solution, and fully stirring at the stirring speed of 400r/min until the polyvinyl alcohol is completely dissolved to obtain a glue solution;

s23: and (3) waiting for the glue solution to be cooled to room temperature, adding magnesium oxide into the glue solution, and fully stirring for 1h at the stirring speed of 400r/min to obtain the adhesive layer 22.

In this embodiment, the adhesive layer 22 is prepared from magnesium chloride, polyvinyl alcohol, magnesium oxide and purified water, and the adhesive layer 22 is prepared by first adding purified water to magnesium chloride to generate a solution, standing, heating at 30 ℃ for 30min, then adding polyvinyl alcohol to the solution, fully stirring at a stirring speed of 400r/min until the polyvinyl alcohol is completely dissolved to obtain a glue solution, finally waiting for the glue solution to be cooled to room temperature, adding magnesium oxide to the glue solution, and fully stirring at a stirring speed of 400r/min for 1 h.

Referring to fig. 4 to 6, the present invention further provides a device 101 for preparing formaldehyde-free flame retardant plywood, which includes a support frame 3, a plurality of stirring kettles 4, a plurality of shock absorbing assemblies 5, a placing plate 6, a rotating motor 7, a speed reducer 8, a rotating shaft 9 and a plurality of stirring blocks 1011, wherein the support frame 3 is fixedly connected to the stirring kettles 4 and is located below the stirring kettles 4, the number of the shock absorbing assemblies 5 is plural, each shock absorbing assembly 5 is respectively fixedly connected to the stirring kettles 4, the placing plate 6 is fixedly connected to each shock absorbing assembly 5, the rotating motor 7 is fixedly connected to the placing plate 6 and is located on the outer side wall of the placing plate 6, the speed reducer 8 is fixedly connected to the output end of the rotating motor 7, one end of the rotating shaft 9 is fixedly connected to the output end of the speed reducer 8, and the number of the stirring blocks 1011 is plural, each of the stirring blocks 1011 is fixedly connected to the outer side wall of the rotating shaft 9.

Further, damper 5 includes damping spring 51, urceolus 52 and interior pole 53, damping spring 51's one end with stirred tank 4 fixed connection, damping spring 51's the other end with place board 6 fixed connection, urceolus 52 with stirred tank 4 fixed connection, interior pole 53's one end with urceolus 52 sliding connection, interior pole 53's the other end with place board 6 fixed connection, just damping spring 51 surrounds respectively in urceolus 52 with the lateral wall of interior pole 53.

Further, the formaldehyde-free flame-retardant plywood preparing device 101 further comprises an extraction pump 1012 and a conveying pipe 1013, wherein an input end of the extraction pump 1012 is communicated with the stirring kettle 4, and one end of the conveying pipe 1013 is communicated with an output end of the extraction pump 1012.

In this embodiment, when preparing the adhesive layer 22, the producer pours the raw material into the stirred tank 4, and when the raw material needs to be stirred, the rotating motor 7 is controlled to operate, the rotating motor 7 is matched with the speed reducer 8 to drive the rotating shaft 9 to rotate, so that the stirring blocks 1011 stir the raw material, in this process, the damping spring 51 absorbs the vibration received by the placing plate 6, so as to reduce the shaking degree of the stirred tank 4 and improve the stability of the stirred tank 4, the damping spring 51 surrounds the outer side walls of the outer cylinder 52 and the inner rod 53 respectively, the inner rod 53 slides in the outer cylinder 52, the inner rod 53 is matched with the outer cylinder 52 to improve the stability of the damping spring 51, after the preparation is finished, the producer controls the extraction pump 1012 to operate, the adhesive layer 22 passes through the conveying pipe 1013, and taking out the plywood from the stirring kettle 4 so as to manufacture the formaldehyde-free flame-retardant plywood 100 in the following process.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.