阅读说明：本技术 三维立体装饰板边缘90°角折边一体化产品及生产方法 (Three-dimensional decorative plate edge 90-degree angle folding integrated product and production method thereof ) 是由 李建宇 谭玉凯 于 2021-03-16 设计创作，主要内容包括：本发明提供一种三维立体装饰板边缘90°角折边一体化产品及生产方法,三维立体装饰板边缘90°角折边一体化产品包括：三维立体装饰板本体,所述三维立体装饰板本体的四周边缘向下折边90°,形成立边；所述立边与所述三维立体装饰板本体一体成型。本发明在以往的三维立体装饰板(三递板)周边一体成型形成90°角的折边,扩大三递板连续安装时与相邻边板体的接触面积,结合底部的加强背板,使其安装上墙后与墙壁的粘接更加牢固,与相邻边的粘接更加紧密。(The invention provides a three-dimensional decorative plate edge 90-degree angle folding integrated product and a production method thereof, wherein the three-dimensional decorative plate edge 90-degree angle folding integrated product comprises the following components: the three-dimensional decorative plate comprises a three-dimensional decorative plate body, wherein the edges of the periphery of the three-dimensional decorative plate body are folded downwards by 90 degrees to form a vertical edge; the vertical edge and the three-dimensional decorative plate body are integrally formed. The invention integrally forms the hem with an angle of 90 degrees at the periphery of the prior three-dimensional decorative plate (three-pass plate), enlarges the contact area between the three-pass plate and the plate body of the adjacent edge when the three-pass plate is continuously installed, and combines the reinforcing back plate at the bottom, so that the bonding between the three-pass plate and the wall is firmer after the three-pass plate is installed on the wall, and the bonding between the three-pass plate and the adjacent edge is tighter.)

1. The utility model provides a three-dimensional decorative board edge 90 jiaos hem integration product which characterized in that includes: the three-dimensional decorative plate comprises a three-dimensional decorative plate body (1), wherein the edges around the three-dimensional decorative plate body (1) are folded downwards by 90 degrees to form a vertical edge (2); the vertical edge (2) and the three-dimensional decorative plate body (1) are integrally formed.

2. The three-dimensional stereo decorative plate edge 90-degree angle folding integrated product according to claim 1, characterized in that the height of the vertical edge (2) is 5-9 mm.

3. The three-dimensional stereo decorative plate edge 90-degree angle folding integrated product according to claim 1, characterized by further comprising a back plate (3); the back plate (3) is positioned below the three-dimensional decorative plate body (1) and is positioned on the inner side of the vertical edge (2); the back plate (3) is embedded into a folded edge area defined by the vertical edges (2), and the periphery of the back plate (3) is fixedly bonded with the inner sides of the vertical edges (2).

4. The integrated product of the three-dimensional decorative plate with 90-degree folded edges according to claim 1, wherein the back plate (3) is made of corrugated paper, and after the back plate (3) is installed, the bottom surface of the back plate (3) is flush with the bottom surface of the vertical edge (2).

5. A method for producing the integrated product with the three-dimensional stereoscopic decorative plate edge folded at the angle of 90 degrees as claimed in any one of claims 1 to 4, is characterized by comprising the following steps:

step 1, designing a forming die, a heat setting die and an edge cutting positioning die;

the forming die and the heat setting die have the same die body shape and respectively comprise a female die (4) and a male die (5);

the male die (5) is positioned below the female die (4), and a cavity is formed by a gap between the male die (5) and the female die (4); the male die (5) and the female die (4) are the same in shape and both comprise: the die comprises a die body (A1), wherein the peripheral edge of the die body (A1) is folded downwards by 90 degrees to form a die vertical edge (A2), and the die vertical edge (A2) extends outwards at an angle of 120 degrees to form a die inclined edge (A3); the oblique die edge (A3) extends horizontally outward to form a horizontal die edge (A4);

for the forming die, a certain number of through holes are formed in the oblique edge (A3) and the horizontal edge (A4) of the die, so that the pulp deposition thickness of the vertical edge (A2) of the die is ensured during dewatering, and the defect of insufficient density of the right-angle edge is avoided during hot-press forming;

for the heat setting die, a through hole is formed in the edge of the male die (5), so that moisture and water vapor can be discharged in time conveniently, and the vertical edge (A2) position of the die, the inclined edge (A3) position of the die and a plate body are dried;

the trimming positioning die is used for cutting off the edge of the product blank plate;

step 2, forming process:

step 2.1, forming a cavity gap of 1.2mm between a convex die (5) and a concave die (4) of a forming die so as to control the thickness of a product;

grouting the formed cavity, wherein the grouting amount is set by taking the absolute dry weight of a final finished product as a standard, the weight of the dehydrated wet blank is 4 times that of the finished product, and the concentration of the grouting paper pulp is 4-7 per mill; controlling the paper pulp to uniformly sink on the forming net in a back flushing or air flow stirring mode;

in the forming process, a certain number of through holes are formed in the oblique edge (A3) and the horizontal edge (A4) of the mold, so that the paper pulp deposition thickness of the vertical edge (A2) of the mold is ensured during dehydration, and the defect that the right-angle edge does not have insufficient density during hot-press forming is met;

step 2.2, after the molding is finished, taking out the wet blank, checking the quality of the surface of the wet blank, removing pollutants, and ensuring that the surface of the blank after heat setting is smooth and free of impurities;

step 3, heat setting process:

step 3.1, regarding the heat setting mold, the heat setting mold comprises a female mold (4) and a male mold (5), and further comprises an upper heating plate and a lower heating plate; an upper heating plate is arranged on the male die (5); a lower heating plate is arranged on the bottom surface of the female die (4);

a through hole is formed in the edge of the male die (5), so that moisture and water vapor can be discharged in time conveniently, and the vertical edge (A2) part of the die and the bevel edge (A3) part of the die and the plate body are dried;

step 3.2, placing the wet blank obtained in the step 2 on a male die (5) and buckling a female die (4); carrying out heating and shaping operation on the wet blank clamped in the male die (5) and the female die (4); wherein, the upper heating plate and the lower heating plate adopt heat conducting oil for thermal compensation, and the temperature of the thermal setting die is 200 ℃;

after the wet blank is placed into a die, when the die is closed, under the combined action of pressure and high temperature, the volume of the wet blank is rapidly compressed, the internal moisture is rapidly extruded and vaporized, the moisture is discharged from a through hole channel of the male die (5), and the volume of a cavity of the die is reduced, so that the die is pressurized for the second time to ensure the density of a product;

the die opening time is determined according to the volume of a product, when the volume of the product is 0.25 square meter, the die opening time is 180 seconds, and when the volume of the product is 0.5 square meter, the die opening time is 300 seconds; when the temperature of the mold is too low, the mold opening time needs to be prolonged;

3.3, when the mold opening time is up, taking out a blank of the product together with the forming net, and separating the blank from the forming net to obtain a primary blank product;

step 3.4, curing the blank product for 7 days, eliminating internal stress, and balancing with the ambient humidity to obtain a final blank product;

wherein, the structure of final blank product is: the blank product bevel edge forming device comprises a blank product body (B1), wherein the peripheral edge of the blank product body (B1) is folded downwards by 90 degrees to form a blank product vertical edge (B2), and the blank product vertical edge (B2) extends outwards at an angle of 120 degrees to form a blank product bevel edge (B3); the inclined edge (B3) of the blank product extends outwards horizontally to form a horizontal edge (B4) of the blank product;

the height of the vertical edge (B2) of the blank product is greater than that of the vertical edge of the final product;

step 4, the edge cutting process:

cutting off the edge of the final blank product obtained in the step 3, wherein the cutting mode is as follows: aiming at the specific position of the vertical edge (B2) of the blank product, cutting off a small number of vertical edges of the blank product, the inclined edge (B3) of the blank product and the horizontal edge (B4) of the blank product, and only reserving the vertical edge of the blank product with the height requirement of the vertical edge of the product to obtain the blank product after edge cutting;

step 5, the process of back plate bonding:

cutting corrugated paper according to the inner side size of the vertical edge of the trimmed blank product, and brushing environment-friendly pressure-sensitive adhesive on the periphery to obtain a back plate; and then the back plate is embedded into the inner side of the vertical edge of the blank product, so that the back surface of the plate body is smooth, and the integral product with the edge folded at the angle of 90 degrees of the complete three-dimensional decorative plate can be obtained.

6. The method for producing the three-dimensional decorative plate edge 90-degree angle folding integrated product according to the claim 5, wherein in the step 4, the edge cutting process comprises the following steps: a laser trimming mode or a rotary cutting mode;

the laser trimming mode is as follows:

installing a laser trimming die with a consistent shape on a laser trimming machine, placing a blank product on the laser trimming die by using a pneumatic clamp, wherein the outer side of the laser trimming die is a flat plate, the size of the flat plate is consistent with the outline of the product, the inner side surface of the flat plate is wrapped by sponge, when the pneumatic clamp is closed, the blank product is buckled outside the shaping die, and one surface of the sponge is attached to the front surface of the blank product;

starting a laser edge trimmer, wherein a cutter path of the laser edge trimmer is set, firstly, cutting a first side edge of a blank product, and then, rotating a laser edge trimming die by 90 degrees to cut a second side edge of the blank product; then, rotating the laser trimming die by 90 degrees to cut off a third side edge of the blank product; then, the laser trimming die is rotated by 90 degrees, and the fourth side edge of the blank product is cut off, so that the trimming process of the blank product is realized;

rotary cutting mode:

using a woodworking engraving machine, placing a rotary cutting blade on a main shaft of the woodworking engraving machine, and cutting off redundant parts of a blank product through the rotation of the rotary cutting blade;

wherein, in the trimming process, the front of the blank product is downward and is placed on a mold with a shape, and the surface of the mold is provided with holes. The mould is placed on the negative pressure cavity, and when rotary cutting is carried out, the negative pressure fan is started, and the blank product is adsorbed and fixed on the mould with the shape by using negative pressure; and (4) walking the cutter path of the rotary cutter for a circle according to the program, and cutting off the redundant part around the blank product.

Technical Field

The invention belongs to the technical field of decorative materials, and particularly relates to an integrated product for folding edges of a three-dimensional decorative plate at an angle of 90 degrees and a production method thereof.

Background

The three-pass board enters the decorative material market from 2008 for 12 years, and the installation mode is mainly realized by bonding, namely: the back of the board surface is glued and adhered to the surface of the wall body, and the thickness of the board body of the three-pass board is only 1.2 mm-1.5 mm generally, so that firm adhesion cannot be realized in the joint of the gaps between the board body and the board body, and the board surface is easy to crack when the board body is subjected to changes of environmental temperature and humidity, so that the board surface is warped, even the board surface is peeled off from the surface of the wall body, and inconvenience is brought to users. Since the three pass board comes into the market, the popularization and application of the three pass board at home and abroad are greatly limited due to the influence of the three pass board.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an integrated product for folding the edge of a three-dimensional decorative plate at an angle of 90 degrees and a production method thereof, which can effectively solve the problems.

The technical scheme adopted by the invention is as follows:

the invention provides a three-dimensional decorative plate edge 90-degree angle folding integrated product, which comprises: the three-dimensional decorative plate comprises a three-dimensional decorative plate body (1), wherein the edges around the three-dimensional decorative plate body (1) are folded downwards by 90 degrees to form a vertical edge (2); the vertical edge (2) and the three-dimensional decorative plate body (1) are integrally formed.

Preferably, the height of the vertical edge (2) is 5-9 mm.

Preferably, the device also comprises a back plate (3); the back plate (3) is positioned below the three-dimensional decorative plate body (1) and is positioned on the inner side of the vertical edge (2); the back plate (3) is embedded into a folded edge area defined by the vertical edges (2), and the periphery of the back plate (3) is fixedly bonded with the inner sides of the vertical edges (2).

Preferably, backplate (3) are the corrugated paper material, backplate (3) installation completion back, the bottom surface of backplate (3) with the bottom surface parallel and level of stile (2).

The invention also provides a production method of the integrated product with the edge folded at the angle of 90 degrees of the three-dimensional decorative plate, which comprises the following steps:

step 1, designing a forming die, a heat setting die and an edge cutting positioning die;

the forming die and the heat setting die have the same die body shape and respectively comprise a female die (4) and a male die (5);

the male die (5) is positioned below the female die (4), and a cavity is formed by a gap between the male die (5) and the female die (4); the male die (5) and the female die (4) are the same in shape and both comprise: the die comprises a die body (A1), wherein the peripheral edge of the die body (A1) is folded downwards by 90 degrees to form a die vertical edge (A2), and the die vertical edge (A2) extends outwards at an angle of 120 degrees to form a die inclined edge (A3); the oblique die edge (A3) extends horizontally outward to form a horizontal die edge (A4);

for the forming die, a certain number of through holes are formed in the oblique edge (A3) and the horizontal edge (A4) of the die, so that the pulp deposition thickness of the vertical edge (A2) of the die is ensured during dewatering, and the defect of insufficient density of the right-angle edge is avoided during hot-press forming;

for the heat setting die, a through hole is formed in the edge of the male die (5), so that moisture and water vapor can be discharged in time conveniently, and the vertical edge (A2) position of the die, the inclined edge (A3) position of the die and a plate body are dried;

the trimming positioning die is used for cutting off the edge of the product blank plate;

step 2, forming process:

step 2.1, forming a cavity gap of 1.2mm between a convex die (5) and a concave die (4) of a forming die so as to control the thickness of a product;

grouting the cavity of the forming die, wherein the grouting amount is set by taking the absolute dry weight of a final finished product as a standard, the weight of the dehydrated wet blank is 4 times that of the finished product, and the concentration of the grouting paper pulp is 4-7 per mill; controlling the paper pulp to uniformly sink on the forming net in a back flushing or air flow stirring mode;

in the forming process, a certain number of through holes are formed in the oblique edge (A3) and the horizontal edge (A4) of the mold, so that the paper pulp deposition thickness of the vertical edge (A2) of the mold is ensured during dehydration, and the defect that the right-angle edge does not have insufficient density during hot-press forming is met;

step 2.2, after the molding is finished, taking out the wet blank, checking the quality of the surface of the wet blank, removing pollutants, and ensuring that the surface of the blank after heat setting is smooth and free of impurities;

step 3, heat setting process:

step 3.1, regarding the heat setting mold, the heat setting mold comprises a female mold (4) and a male mold (5), and further comprises an upper heating plate and a lower heating plate; an upper heating plate is arranged on the male die (5); a lower heating plate is arranged on the bottom surface of the female die (4);

a through hole is formed in the edge of the male die (5), so that moisture and water vapor can be discharged in time conveniently, and the vertical edge (A2) part of the die and the bevel edge (A3) part of the die and the plate body are dried;

step 3.2, placing the wet blank obtained in the step 2 on a male die (5) and buckling a female die (4); carrying out heating and shaping operation on the wet blank clamped in the male die (5) and the female die (4); wherein, the upper heating plate and the lower heating plate adopt heat conducting oil for thermal compensation, and the temperature of the thermal setting die is 200 ℃;

after the wet blank is placed into a die, when the die is closed, under the combined action of pressure and high temperature, the volume of the wet blank is rapidly compressed, the internal moisture is rapidly extruded and vaporized, the moisture is discharged from a through hole channel of the male die (5), and the volume of a cavity of the die is reduced, so that the die is pressurized for the second time to ensure the density of a product;

the die opening time is determined according to the volume of a product, when the volume of the product is 0.25 square meter, the die opening time is 180 seconds, and when the volume of the product is 0.5 square meter, the die opening time is 300 seconds; when the temperature of the mold is too low, the mold opening time needs to be prolonged;

3.3, when the mold opening time is up, taking out a blank of the product together with the forming net, and separating the blank from the forming net to obtain a primary blank product;

step 3.4, curing the blank product for 7 days, eliminating internal stress, and balancing with the ambient humidity to obtain a final blank product;

wherein, the structure of final blank product is: the blank product bevel edge forming device comprises a blank product body (B1), wherein the peripheral edge of the blank product body (B1) is folded downwards by 90 degrees to form a blank product vertical edge (B2), and the blank product vertical edge (B2) extends outwards at an angle of 120 degrees to form a blank product bevel edge (B3); the inclined edge (B3) of the blank product extends outwards horizontally to form a horizontal edge (B4) of the blank product;

the height of the vertical edge (B2) of the blank product is greater than that of the vertical edge of the final product;

step 4, the edge cutting process:

cutting off the edge of the final blank product obtained in the step 3, wherein the cutting mode is as follows: aiming at the specific position of the vertical edge (B2) of the blank product, cutting off a small number of vertical edges of the blank product, the inclined edge (B3) of the blank product and the horizontal edge (B4) of the blank product, and only reserving the vertical edge of the blank product with the height requirement of the vertical edge of the product to obtain the blank product after edge cutting;

step 5, the process of back plate bonding:

cutting corrugated paper according to the inner side size of the vertical edge of the trimmed blank product, and brushing environment-friendly pressure-sensitive adhesive on the periphery to obtain a back plate; and then the back plate is embedded into the inner side of the vertical edge of the blank product, so that the back surface of the plate body is smooth, and the integral product with the edge folded at the angle of 90 degrees of the complete three-dimensional decorative plate can be obtained.

Preferably, in step 4, the trimming process includes: a laser trimming mode or a rotary cutting mode;

the laser trimming mode is as follows:

installing a laser trimming die with a consistent shape on a laser trimming machine, placing a blank product on the laser trimming die by using a pneumatic clamp, wherein the outer side of the laser trimming die is a flat plate, the size of the flat plate is consistent with the outline of the product, the inner side surface of the flat plate is wrapped by sponge, when the pneumatic clamp is closed, the blank product is buckled outside the shaping die, and one surface of the sponge is attached to the front surface of the blank product;

starting a laser edge trimmer, wherein a cutter path of the laser edge trimmer is set, firstly, cutting a first side edge of a blank product, and then, rotating a laser edge trimming die by 90 degrees to cut a second side edge of the blank product; then, rotating the laser trimming die by 90 degrees to cut off a third side edge of the blank product; then, the laser trimming die is rotated by 90 degrees, and the fourth side edge of the blank product is cut off, so that the trimming process of the blank product is realized;

rotary cutting mode:

using a woodworking engraving machine, placing a rotary cutting blade on a main shaft of the woodworking engraving machine, and cutting off redundant parts of a blank product through the rotation of the rotary cutting blade;

wherein, in the trimming process, the front of the blank product is downward and is placed on a mold with a shape, and the surface of the mold is provided with holes. The mould is placed on the negative pressure cavity, and when rotary cutting is carried out, the negative pressure fan is started, and the blank product is adsorbed and fixed on the mould with the shape by using negative pressure; and (4) walking the cutter path of the rotary cutter for a circle according to the program, and cutting off the redundant part around the blank product.

The integrated product and the production method for folding the edge of the three-dimensional decorative plate at the angle of 90 degrees have the following advantages:

the invention integrally forms the hem with an angle of 90 degrees at the periphery of the prior three-dimensional decorative plate (three-pass plate), enlarges the contact area between the three-pass plate and the plate body of the adjacent edge when the three-pass plate is continuously installed, and combines the reinforcing back plate at the bottom, so that the bonding between the three-pass plate and the wall is firmer after the three-pass plate is installed on the wall, and the bonding between the three-pass plate and the adjacent edge is tighter.

Drawings

FIG. 1 is a cross-sectional view of a 90-degree folded edge integrated product of the edge of a three-dimensional decorative plate provided by the invention;

FIG. 2 is an exploded view of the integrated product of the three-dimensional decorative board with 90-degree folded edges provided by the invention;

FIG. 3 is a cross-sectional view of a blank product provided by the present invention before trimming;

FIG. 4 is a perspective view of an uncut pre-trimmed blank product provided by the present invention;

FIG. 5 is a perspective view of an uncut pre-trimmed blank product provided by the present invention;

FIG. 6 is a front view of an uncut pre-trimmed blank product provided by the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C1;

FIG. 8 is a drawing showing the combination of the female mold and the male mold;

FIG. 9 is a perspective view of the male mold;

fig. 10 is a partial enlarged view of a portion C2 of fig. 9;

FIG. 11 is a perspective view of the female mold;

fig. 12 is a partial enlarged view of a portion C3 of fig. 11;

FIG. 13 is a view of a laser trimming apparatus;

fig. 14 is a drawing of a rotary cutting device.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention relates to a three-dimensional decorative plate, in particular to a three-dimensional decorative plate (three-step plate) which changes the prior three-dimensional decorative plate, wherein the periphery of the prior three-dimensional decorative plate (three-step plate) is integrally formed to form a folded edge with an angle of 90 degrees, the contact area between the three-step plate and a plate body of an adjacent edge is enlarged when the three-step plate is continuously installed, and the reinforced back plate at the bottom is combined, so that the three-step plate is more firmly adhered to a wall after being installed on the wall and is more tightly adhered to the adjacent edge. The invention also relates to a production, installation and use method of the three-pass plate 90-degree flanging product.

The invention provides a three-dimensional decorative plate edge 90-degree angle folding integrated product, which refers to figures 1 and 2 and comprises the following components: the three-dimensional decorative plate comprises a three-dimensional decorative plate body 1, wherein the edges around the three-dimensional decorative plate body 1 are folded downwards by 90 degrees to form a vertical edge 2; the vertical edge 2 and the three-dimensional decorative plate body 1 are integrally formed. The height of the vertical edge 2 is 5-9 mm.

Also comprises a back plate 3; the back plate 3 is positioned below the three-dimensional decorative plate body 1 and is positioned on the inner side of the vertical edge 2; the back plate 3 is embedded into a folding edge area enclosed by the vertical edges 2, and the periphery of the back plate 3 is fixedly bonded with the inner sides of the vertical edges 2.

Wherein, backplate 3 is the corrugated paper material, and the back is accomplished in the installation of backplate 3, and the bottom surface of backplate 3 and the bottom surface parallel and level of stile 2.

The invention provides a 90-degree-angle edge folding integrated product for a three-dimensional decorative plate, which is a wall decorative plate, and particularly relates to a folding one-step forming process of a three-dimensional decorative plate (a wall decorative plate with a three-dimensional shape produced by a pulp molding process). The folding of the invention means: on the form of original three pass board, through the change of mould, will pass three four sides of board and turn down 90 degrees, form a 5+9mm high closed stile, its purpose is: the thickness of the periphery of the three-pass plate is changed from 1.2mm-2mm to 5-9mm, and then a back lining bottom plate (back plate) is combined to increase the strength of the three-pass plate during splicing and the bonding area between plates, and improve the bonding stability between the three-pass plate and the original wall body. The invention basically solves the problem that the paper pulp molding product cannot be demoulded when the 90-degree angle edge is folded.

The invention provides a three-dimensional decorative plate edge 90-degree angle folding integrated product which has the following characteristics:

1) the invention provides a three-dimensional decorative plate edge 90-degree folding integrated product which comprises a three-dimensional shape of a surface and folding edges formed by folding the edges of the periphery of the three-dimensional decorative plate downwards by 90 degrees, wherein the four folding edges of the bottom surface of the three-dimensional decorative plate inwards form 90-degree folding angles and are integrally formed with a plate surface.

2) The 90-degree folded edge height of the plate body, namely the vertical edge height is 5mm-9mm, and the continuous production can be realized through one-step forming.

3) The 90-degree angle forming and shaping of the pulp molded product can be solved by a conventional production mode, but the demoulding after the heat shaping becomes a difficult problem for restricting the production, and the invention successfully solves the difficult problem of demoulding.

Specifically, after the folded edge is folded by 90 degrees, demoulding is difficult in a pulp moulding mould, and the folded edge is positioned at the outermost edge, so that the folded edge part is easy to break and continuous production cannot be realized.

In the invention, the forming die and the hot forming die are designed to have a die vertical edge formed by a 90-degree angle, a die inclined edge formed by a 120-degree angle and a die horizontal edge, so that the manufactured blank product correspondingly has a blank product vertical edge, a blank product inclined edge and a blank product horizontal edge; and finally, cutting off the slightly damaged inclined edge of the blank product, the horizontal edge of the blank product and a small amount of vertical edges of the blank product below the horizontal edge by adopting an edge cutting process, thereby obtaining the complete vertical edge of the product. Therefore, the invention can realize the right-angle demoulding of the paper pulp moulding product, ensure that the product can be demoulded smoothly after being shaped in the mould, and realize the increase of the thickness of the product and the smooth and mellow edge by combining the back plate sticking in the later finishing, when the sticking construction is carried out, the gap transition between the three-dimensional modeling plates is natural and smooth, the back surface of the plate body is stuck with the wall body, and the side plate body is stuck with the plate body to form an integral effect.

Therefore, the folding angle is an extension relation between 90 degrees and 120 degrees, after the 120 degrees of angle extension, the right-angle demolding of the pulp molded product can be realized, and the problems of vertical edge fracture, difficult mold drawing and the like caused by direct demolding due to the 90-degree right angle are solved.

The invention also provides a production method of the integrated product with the edge folded at the angle of 90 degrees of the three-dimensional decorative plate, which comprises the following steps:

step 1, designing a forming die, a heat setting die and an edge cutting positioning die;

wherein, the forming die and the heat setting die have the same shape of the die body and comprise a female die 4 and a male die 5;

with reference to fig. 8-12, the male mold 5 is located below the female mold 4, and a space between the male mold 5 and the female mold 4 forms a cavity; the male die 5 and the female die 4 are the same in shape and both comprise: the die comprises a die body A1 with a molding part, wherein the peripheral edge of the die body A1 is folded downwards by 90 degrees to form a die vertical edge A2, and the die vertical edge A2 extends outwards at an angle of 120 degrees to form a die inclined edge A3; the oblique die edge A3 extends horizontally outwards to form a horizontal die edge A4;

for a forming die, a certain number of through holes are formed in the oblique edge A3 and the horizontal edge A4 of the die, so that the paper pulp deposition thickness of the vertical edge A2 of the die is ensured during dewatering, and the defect that the density is insufficient is not generated at the right-angle edge during hot-press forming;

for the heat setting die, a through hole is formed in the edge of the male die 5, so that moisture and water vapor can be discharged in time conveniently, and the drying of the vertical edge A2 part of the die, the inclined edge A3 part of the die and a plate body is ensured;

the trimming positioning die is used for cutting off the edge of the product blank plate;

step 2, forming process:

the forming die is a die which is used for receiving paper pulp and forming a basic wet blank shape when the paper pulp is molded.

Step 2.1, forming a cavity gap of 1.2mm between a male die 5 and a female die 4 of a forming die to control the thickness of a product;

grouting the cavity of the forming die, wherein the grouting amount is set by taking the absolute dry weight of a final finished product as a standard, the weight of the dehydrated wet blank is 4 times that of the finished product, and the concentration of the grouting paper pulp is 4-7 per mill; controlling the paper pulp to uniformly sink on the forming net in a back flushing or air flow stirring mode;

in the forming process, in order to ensure that the paper pulp at the edge folding part is deposited to the position of a specified edge folding angle of 90 degrees, a certain number of through holes are drilled at the positions of 90 degrees and 120 folds, namely: through set up a certain amount of through-going pore at mould hypotenuse A3 and mould horizontal limit A4, guarantee during the dehydration, the paper pulp deposition thickness at mould vertical limit A2 position satisfies the right angle edge and does not produce the defect that density is not enough when hot pressing is stereotyped.

Step 2.2, after the molding is finished, taking out the wet blank, checking the quality of the surface of the wet blank, removing pollutants, and ensuring that the surface of the blank after heat setting is smooth and free of impurities;

step 3, heat setting process:

step 3.1, regarding the heat setting mold, the heat setting mold comprises a female mold 4 and a male mold 5, wherein the female mold is arranged above the male mold, the male mold is arranged below the female mold, and the heat setting mold also comprises an upper heating plate and a lower heating plate; an upper heating plate is arranged on the male die 5; the bottom surface of the female die 4 is provided with a lower heating plate;

a through hole is formed in the edge of the male die 5, so that moisture and water vapor can be discharged in time conveniently, and the drying of the vertical edge A2 part of the die, the inclined edge A3 part of the die and the plate body is ensured;

step 3.2, placing the wet blank obtained in the step 2 on a male die 5, and buckling a female die 4; heating and shaping the wet blank clamped in the male die 5 and the female die 4; wherein, the upper heating plate and the lower heating plate adopt heat conducting oil for thermal compensation, and the temperature of the thermal setting die is 200 ℃;

after the wet blank is placed into a mold, when the mold is closed, under the combined action of pressure and high temperature, the volume of the wet blank is rapidly compressed, the internal moisture is rapidly extruded and vaporized, the moisture is discharged from a through hole channel of the male mold 5, and the volume of a cavity of the mold is reduced, so that the mold is pressurized for the second time to ensure the density of a product;

the die opening time is determined according to the volume of a product, when the volume of the product is 0.25 square meter, the die opening time is 180 seconds, and when the volume of the product is 0.5 square meter, the die opening time is 300 seconds; when the temperature of the mold is too low, the mold opening time needs to be prolonged;

when in heat setting, the drying time needs to be ensured, the product with the thickness of 500mm is generally not less than 200 seconds, and the water content of the dried product is not more than 5 percent.

When the heat setting die is used for die assembly, alignment is required to be accurate, the upper die is a female die, the lower die is a male die, and during setting, alignment requirements of the upper die and the lower die are accurate and in place, deviation is not allowed, so that paper pulp at the edge vertical face position is not pushed down by the upper female die.

In the design of a wet blank forming die, holes need to be drilled at the extending parts of the vertical surface folding edges in the folding edge design of the forming die, so that paper pulp can be uniformly deposited at the folding edge parts during forming, sufficient paper pulp deposition is realized at the side vertical surfaces, and the full edge modeling is ensured during heat setting.

3.3, when the mold opening time is up, taking out a blank of the product together with the forming net, and separating the blank from the forming net to obtain a primary blank product;

the forming process and the heat setting process have the following characteristics:

in the design of the mold, a 90-degree angle range is defined in a reserved part of an edge, a 120-degree angle is extended out of the reserved part and is integrated with the 90-degree angle range, the edge part is guaranteed to be deposited and adsorbed with full paper pulp during molding, a wet blank is placed on the molding mold when the wet blank is transferred to the molding, the wet blank is molded through closed pressurization and heating of the mold, and demolding of a product is realized by using the angle difference between the 90-degree angle range and the 120-degree angle range after the wet blank is rapidly dehydrated and dried at the temperature meeting the molding requirement. If the angle difference is not in transition, the dried three-pass plate blank can be clamped on a mould, and the plate body can be broken and damaged due to forced stripping.

Step 3.4, curing the blank product for 7 days, eliminating internal stress, and balancing with the ambient humidity to obtain a final blank product;

specifically, after demoulding and cooling, the heat-set three-pass plate blank is placed in a place to be cut at the edge, the blank is balanced with indoor humidity, and after internal stress is released, the blank enters the edge cutting process, and a certain margin is reserved at the lowest part of the blank to be cut. The edge cutting mode has two kinds, one is the laser edge cutting mode, and the other is the rotary cutting mode.

Wherein, with reference to fig. 3-7, the final blank product has the structure: the blank product bevel edge forming device comprises a blank product body B1, the edge of the periphery of the blank product body B1 is folded downwards by 90 degrees to form a blank product vertical edge B2, and the blank product vertical edge B2 extends outwards at an angle of 120 degrees to form a blank product bevel edge B3; the bevel edge B3 of the blank product extends horizontally outwards to form a horizontal edge B4 of the blank product;

the height of the vertical edge B2 of the blank product is greater than that of the vertical edge of the final product;

step 4, the edge cutting process:

cutting off the edge of the final blank product obtained in the step 3, wherein the cutting mode is as follows: aiming at the specific position of the vertical edge B2 of the blank product, cutting off a small number of vertical edges of the blank product, the inclined edge B3 of the blank product and the horizontal edge B4 of the blank product, and only keeping the vertical edge of the blank product with the height requirement of the vertical edge of the product to obtain the blank product after edge cutting;

in step 4, the trimming process comprises: a laser trimming mode or a rotary cutting mode;

the laser trimming mode is as follows:

referring to fig. 13, a laser trimming die 7 with a consistent shape is installed on a laser edge trimmer 6, a blank product 9 is placed on the laser trimming die by using a pneumatic clamp 8, the outer side of the laser trimming die is a flat plate 8-1, the size of the flat plate is consistent with the product outline, the inner side surface of the flat plate is wrapped by sponge, when the pneumatic clamp is closed, the blank product is buckled outside the shaping die, and one surface of the sponge is attached to the front surface of the blank product;

starting a laser edge trimmer, wherein a cutter path of the laser edge trimmer is set, firstly, cutting a first side edge of a blank product, and then, rotating a laser edge trimming die by 90 degrees to cut a second side edge of the blank product; then, rotating the laser trimming die by 90 degrees to cut off a third side edge of the blank product; then, the laser trimming die is rotated by 90 degrees, and the fourth side edge of the blank product is cut off, so that the trimming process of the blank product is realized;

rotary cutting mode:

referring to fig. 14, in the design of the trimming die, the requirement of vacuum negative pressure for adsorbing and fixing the blank plate needs to be met, a negative pressure cavity is formed at the lower part of the die, and a vacuum pump is used for pumping, so that the blank plate is firmly fixed on the die, the accuracy and consistency of the cutting path are ensured, and the deviation is avoided.

Specifically, a woodworking engraving machine is used, a rotary cutting blade is arranged on a main shaft of the woodworking engraving machine, and redundant parts of a blank product are cut off through rotation of the rotary cutting blade;

wherein, in the trimming process, the front of the blank product is downward and is placed on a mold with a shape, and the surface of the mold is provided with holes. The mould is placed on the negative pressure cavity, and when rotary cutting is carried out, the negative pressure fan is started, and the blank product is adsorbed and fixed on the mould with the shape by using negative pressure; and (4) walking the cutter path of the rotary cutter for a circle according to the program, and cutting off the redundant part around the blank product.

Therefore, when the redundant edge part is cut off by the rotary knife, the rotary blade is installed by the main shaft of the woodworking engraving machine, and the edge cutting is realized by combining a special die. The mould is by special base, and the inside of base is channel structure, combines the back when mould and base, forms a cavity in the base, after being connected with the vacuum pump, after the passageway on the mould is covered by the base plate, vacuum negative pressure closely adsorbs the base plate on the mould, after opening carpenter's engraver, the surplus part of rotary blade peripheral according to the route of setting for, with the base plate excision.

Therefore, in the rotary cutting mode, the rotary cutter is adopted in the edge cutting method, the main shaft of the woodworking engraving machine is used as a carrier of the cutter head, and the linear motion function of the X, Y shaft of the engraving machine is utilized to realize the parallelogram closing motion to cut off the edge of the three-pass plate blank plate which is not reserved at the 90-degree angle, so that the edge cutting can be continuously produced. The laser trimming is to cut off the excess part except the edge by using the energy of the laser beam.

Step 5, the process of back plate bonding:

cutting corrugated paper according to the inner side size of the vertical edge of the trimmed blank product, and brushing environment-friendly pressure-sensitive adhesive on the periphery to obtain a back plate; and then the back plate is embedded into the inner side of the vertical edge of the blank product, so that the back surface of the plate body is smooth, and the integral product with the edge folded at the angle of 90 degrees of the complete three-dimensional decorative plate can be obtained.

Specifically, the plate body of the redundant part of the edge is cut off, and the plate body is combined with the back plate to form a complete product, the thickness of the back plate is determined by corrugated paper according to the residual thickness of the edge and the bottom surface, the geometric size of the back plate is determined according to the actual size of the inner side of the edge of the plate body, the thickness of the general back plate is 3mm, and the overall size of the general back plate is 2.5mm smaller than that of the product.

The width of the four sides of the back plate is 5mm, the four sides are coated by pressure-sensitive adhesive (non-setting adhesive), and the back plate is embedded into the folding edge area at the back of the three-pass plate, so that the back plate and the bottom edge of the folding edge part are integrated into a whole.

The integrated product with the 90-degree-angle folded edge at the edge of the three-dimensional decorative plate is generally used as an indoor decorative plate for manufacturing background walls and other occasions, and is installed in a nail-free adhesive pasting mode during construction.

The invention provides a three-dimensional decorative plate edge 90-degree angle folding integrated product, which has the following advantages:

1) the three-pass board is a brand new product, and mainly solves the problem that the gap of the board body is not filled well and the gap is filled with irregular illness when the product of the original three-pass board is too thin and is installed and spliced. By adopting the product of the invention, the spliced gaps are smooth and natural, the transition between the gaps is smooth, the mounting working hour is saved, and the product is suitable for DYI manufacturing.

2) The plate body of the three-dimensional decorative plate 90-degree angle folding product (three pass plate) is combined with the back plate through the edge cutting, the thickness of the product is increased by 5-9mm, when the three-dimensional decorative plate is actually applied, splicing and pasting are not only the back surface and the wall surface, but also the reliability of bonding between the side surfaces is increased, and because the edge of the product is smooth and straight after the edge folding, the gap is attractive and smooth, the warping and cracking are not easy to occur, and the installation quality is ensured.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.