Door plate, preparation method thereof and cabinet body

Abstract

The invention discloses a door plate, a preparation method thereof and a cabinet body. The door plate comprises a base plate; the substrate comprises an upper surface, a lower surface, a left surface, a right surface, a front surface and a rear surface; a frame is arranged on the front surface and comprises an upper frame, a left frame, a lower frame and a right frame, the upper frame comprises an upper rear edge, an upper top edge, an upper-upper connecting edge, an upper bevel edge, an upper-middle connecting edge, an upper front edge, an upper-lower connecting edge and an upper bottom edge in sequence, the width of the upper frame ranges from 12 mm to 30 mm, the thickness of the upper frame ranges from 5 mm to 12 mm, and the included angle between the upper rear edge and the upper bottom edge ranges from 30 degrees to 60 degrees. The upper frame is connected with the front surface; the left frame, the lower frame and the right frame are the same as the upper frame in structure. The shape of the frame is improved, the width is reduced, the approximate line design is smoother, more flexible and more unique, and the door plate has enough stereoscopic impression and attractiveness, so that the door plate is more layered and decorative visually, the process is simple, and meanwhile, the manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture, and more specifically, to a door panel and a preparation method thereof, and a cabinet body. Background Art

[0002] Door panels are one of the common structures in furniture, and there are so many types of door panels on the market that it is dizzying.

[0003] Reference Figure 1 As shown, Figure 1 It is a partial top view of a door panel in the prior art. The existing Chinese patent document 1 (authorization announcement number CN213898702U, authorization announcement date August 6, 2021) discloses a door panel and a cabinet, the door panel includes a core panel 1' and a flange strip 2', the flange strip 2' is arranged at the edge of the core panel 1', the core panel 1' is made of a multilayer board, and the flange strip 2' is made of a high-density medium-density fiberboard; the core panel 1' includes a surface 11' and a side surface 12', the side surface 12' is connected to the surface 11' and surrounds the surface 11', the flange strip 2' includes a bottom surface 21' arranged at the bottom of the flange strip 2' and a finishing surface 22' arranged at the top of the flange strip 2', the bottom surface 21' is fixedly connected to the surface 11', and the shape of the finishing surface 22' is irregular. In this solution, the overly wide convex edge strip 2' wastes costs. The convex edge strip 2' consists of a straight edge and a rounded beveled edge, and the rounded beveled edge faces the outside of the door panel. Due to the simple frame lines, the overall design of the door panel lacks three-dimensionality and layering.

[0004] Reference Figure 2 As shown, Figure 2 It is a structural schematic diagram of a new type of core board and frame engagement in the prior art. The existing Chinese patent document 2 (authorization announcement number CN207847457U, authorization announcement date September 11, 2018) discloses a new type of veneer-covered frame door, including a core board 2" and a frame 1"; the frame 1" is a frame structure with a hollow middle; an inwardly recessed engagement groove is provided on the inner side of the frame 1", and the engagement groove is a horizontally placed concave groove structure, the core board 2 is provided in the frame 1", and the edge of the core board 2" is engaged in the engagement groove, and the core board 2" and the frame 1" are combined with each other to form the frame door body; the core board 2" and the frame 1" are both composed of a base material and a veneer covering layer, and the veneer covering layer is coated on the outer surface of the base material. This solution requires the core board 2" to be embedded with the frame 1", the processing technology is more complicated, the frame occupies too much space, and the manufacturing cost is relatively high.

[0005] Therefore, there is an urgent need to provide a door panel and a preparation method thereof, and a cabinet body to solve the above problems. Summary of the invention

[0006] In view of this, the present invention provides a door panel to solve the problems that the manufacturing cost of the door panel is high due to the frame being too wide and the door panel has no three-dimensional sense and layering sense.

[0007] In a first aspect, the present application provides a door panel, comprising a base plate, the base plate being a rectangular flat plate, the base plate being a solid structure, and the material of the base plate being wood;

[0008] The substrate comprises an upper surface, a lower surface, a left surface, a right surface, a front surface and a rear surface, the upper surface and the lower surface are arranged oppositely and parallel to each other, the left surface and the right surface are arranged oppositely and parallel to each other, the front surface and the rear surface are arranged oppositely and parallel to each other, and the upper surface, the lower surface, the left surface, the right surface, the front surface and the rear surface are arranged to form the substrate;

[0009] A frame is provided at the periphery of the front surface, and the frame includes an upper frame, a left frame, a lower frame and a right frame connected end to end in sequence, the upper frame and the lower frame are arranged oppositely and parallel to each other, the left frame and the right frame are arranged oppositely and parallel to each other, and along the thickness direction of the substrate, the orthographic projection of the frame is located within the orthographic projection of the front surface, and the orthographic projections of the upper frame, the left frame, the lower frame and the right frame are all trapezoidal;

[0010] Along the width direction of the substrate, the cross section of the upper frame includes an upper rear edge, an upper top edge, an upper upper connecting edge, an upper oblique edge, an upper middle connecting edge, an upper front edge, an upper and lower connecting edge, and an upper bottom edge connected end to end in sequence, the upper rear edge and the upper front edge are arranged opposite to each other and are parallel to each other, the upper top edge and the upper rear edge are perpendicular to each other, the angle between the straight line where the upper top edge is located and the straight line where the upper oblique edge is located, and the angle between the straight line where the upper oblique edge is located and the straight line where the upper upper front edge is located are all obtuse angles, the upper upper connecting edge, the upper middle connecting edge, and the upper and lower connecting edges are all arc-shaped, and the openings of the three arcs are all facing the upper rear edge, the upper rear edge is connected to the front surface, and the upper bottom edge is located on the side of the upper top edge close to the lower frame;

[0011] Along the length direction of the substrate, the width of the upper frame ranges from 12 mm to 30 mm, and along the thickness direction of the substrate, the thickness of the upper frame ranges from 5 mm to 12 mm. An angle α is set between the upper rear edge and the upper bottom edge, and the value range of α is 30° to 60°;

[0012] The upper frame and the front surface are connected by glue or by a mortise and tenon structure;

[0013] The structure of the left frame, the structure of the lower frame, and the structure of the right frame are all the same as the structure of the upper frame.

[0014] Optionally, an upper edge seal is connected to a side of the upper surface away from the lower surface, and a lower edge seal is connected to a side of the lower surface away from the upper surface. Along the thickness direction of the substrate, the width of the upper edge seal is greater than the width of the upper surface, and the width of the lower edge seal is greater than the width of the lower surface; a left edge seal is connected to a side of the left surface away from the right surface, and a right edge seal is connected to a side of the right surface away from the left surface. Along the thickness direction of the substrate, the width of the left edge seal is greater than the width of the left surface, and the width of the right edge seal is greater than the width of the right surface.

[0015] Optionally, the area where the front surface contacts the upper rear edge and the upper rear edge are both rough surfaces.

[0016] Optionally, when the upper frame and the front surface are connected by a mortise and tenon structure, the area where the front surface contacts the upper rear edge is provided with a front upper outer protrusion facing the upper rear edge, and the upper rear edge is provided with an upper rear groove matching the front upper outer protrusion, and the front upper outer protrusion is inserted into the upper rear groove; and / or,

[0017] The upper rear edge is provided with an upper rear outer protrusion facing the front surface, and the area where the front surface contacts the upper rear edge is provided with a front upper groove matched with the upper rear outer protrusion, and the upper rear outer protrusion is inserted into the front upper groove.

[0018] Optionally, along the width direction of the substrate, the cross-sectional shape of the front upper outer protrusion and / or the upper rear outer protrusion is a quadrilateral or a triangle.

[0019] Optionally, the area of ​​the front surface is larger than the area of ​​the left surface, and the area of ​​the front surface is larger than the area of ​​the upper surface.

[0020] Optionally, along the length direction of the substrate, the upper top edge and the upper surface are located in the same horizontal plane.

[0021] Optionally, along the thickness direction of the substrate, the width of the upper sealing edge is equal to the sum of the width of the upper surface and the width of the upper top edge.

[0022] In a second aspect, the present application provides a method for preparing a door panel, comprising the following steps:

[0023] Cutting the raw material with a cutting device to obtain a substrate; wherein the substrate is a rectangular flat plate, and comprises an upper surface, a lower surface, a left surface, a right surface, a front surface and a rear surface, wherein the upper surface and the lower surface are arranged oppositely and parallel to each other, the left surface and the right surface are arranged oppositely and parallel to each other, and the front surface and the rear surface are arranged oppositely and parallel to each other;

[0024] Assemble the frame on the front surface to obtain a framed substrate; wherein the frame includes an upper frame, a left frame, a lower frame and a right frame connected end to end in sequence, the upper frame and the lower frame are arranged oppositely and parallel to each other, the left frame and the right frame are arranged oppositely and parallel to each other, the upper frame is connected to the side of the front surface close to the upper surface, the left frame is connected to the side of the front surface close to the left surface, the lower frame is connected to the side of the front surface close to the lower surface, and the right frame is connected to the side of the front surface close to the right surface;

[0025] Assembling the edge seal on the substrate with a frame to obtain the substrate with edge seal; wherein the edge seal includes an upper edge seal, a left edge seal, a lower edge seal and a right edge seal, connecting the upper edge seal with the upper surface and a part of the upper frame, connecting the left edge seal with the left surface and a part of the left frame, connecting the lower edge seal with the lower surface and a part of the lower frame, and connecting the right edge seal with the right surface and a part of the right frame;

[0026] The substrate with edge banding is polished, painted, naturally dried and cured in sequence to obtain a door panel.

[0027] In a third aspect, the present application provides a cabinet body, including a cabinet door, and the cabinet door is any one of the door panels described above.

[0028] Compared with the prior art, the door panel and the preparation method thereof, and the cabinet provided by the present invention achieve at least the following beneficial effects:

[0029] The present invention provides a door panel, a preparation method thereof, and a cabinet body. The door panel includes a base plate, and a front surface of the base plate is surrounded by a frame. Compared with the frame in the prior art, the frame has an improved shape and a reduced width. The improved frame line design is smoother, more flexible and unique, with sufficient three-dimensional sense and aesthetics, so that the door panel has more layered and decorative visually, ensuring that the door panel can adapt to different home styles and decoration requirements, can enhance the overall aesthetics and ornamental value of the home, and expand the scope of application of the door panel. Compared with the prior art, the door panel manufactured by the frame has a simpler processing technology, can save more raw materials, and significantly reduces the manufacturing cost. At the same time, the door panel has no excessive frames and decorations, is easier to clean, and can reduce the difficulty and time of cleaning the door panel.

[0030] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0031] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0033] Figure 1 It is a partial top view of a door panel in the prior art;

[0034] Figure 2 It is a schematic diagram of the structure of a new type of core board and frame engagement in the prior art;

[0035] Figure 3 It is a front view of a door panel provided by the present invention;

[0036] Figure 4 yes Figure 3 A schematic diagram of the structure of the middle substrate in one direction;

[0037] Figure 5 yes Figure 3 A schematic diagram of the structure of the middle substrate in another direction;

[0038] Figure 6 yes Figure 3 Axonometric view of the middle door panel;

[0039] Figure 7 It is a cross-sectional view of an upper frame provided by the present invention;

[0040] Figure 8 is a cross-sectional view of a left frame provided by the present invention;

[0041] Fig. 9 is a cross-sectional view of a lower frame provided by the present invention;

[0042] Fig.10 is a cross-sectional view of a right frame provided by the present invention;

[0043] Fig.11 It is a structural schematic diagram of a part of the upper frame and the front surface before assembly provided by the present invention;

[0044] Fig.12 This is a schematic diagram of the structure of another partial upper frame and front surface before assembly provided by the present invention;

[0045] Fig.13 It is a schematic diagram of another structure of a partial upper frame and a front surface before assembly provided by the present invention;

[0046] Fig.14 It is an exploded view of a door panel provided by the present invention;

[0047] Fig.15 It is a flow chart of a method for preparing a door panel provided by the present invention;

[0048] Fig.16 It is a structural schematic diagram of a cabinet provided by the present invention. DETAILED DESCRIPTION

[0049] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0050] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0051] Technologies, methods, and devices known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be considered as part of the specification.

[0052] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0053] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0054] Reference Figure 3-Figure 14 , Figure 3 It is a front view of a door panel provided by the present invention; Figure 4 yes Figure 3 A schematic diagram of the structure of the middle substrate in one direction; Figure 5 yes Figure 3 A schematic diagram of the structure of the middle substrate in another direction; Figure 6 yes Figure 3 Axonometric view of the middle door panel; Figure 7 It is a cross-sectional view of an upper frame provided by the present invention;

[0055] Figure 8 is a cross-sectional view of a left frame provided by the present invention; Fig. 9 is a cross-sectional view of a lower frame provided by the present invention; Fig.10 is a cross-sectional view of a right frame provided by the present invention; Fig.11 It is a structural schematic diagram of a part of the upper frame and the front surface before assembly provided by the present invention; Fig.12 This is a schematic diagram of the structure of another partial upper frame and front surface before assembly provided by the present invention; Fig.13 It is a schematic diagram of another structure of a partial upper frame and a front surface before assembly provided by the present invention; Fig.14 It is an exploded view of a door panel provided by the present invention.

[0056] Example 1

[0057] Reference Figure 3 As shown, the present embodiment provides a door panel, including a substrate 1, which is a solid structure. By setting up a solid structure, it can be ensured that the substrate 1 has a certain strength, thereby increasing the hardness and service life of the door panel. The material of the substrate 1 is wood, and the wood can be selected from a density board. The density board, also known as a fiberboard, is a man-made board made by interweaving wood cellulose fibers and utilizing its inherent adhesive properties. The density board has the advantages of small longitudinal and transverse strength difference, uniform material, not easy to crack, and a wide range of uses. The materials that can be selected for the substrate 1 include but are not limited to these and are not limited here.

[0058] Combination Figure 3-Figure 5As shown, the substrate 1 is a rectangular flat plate, and the substrate 1 includes an upper surface 11, a lower surface 12, a left surface 13, a right surface 14, a front surface 15 and a rear surface 16. The upper surface 11 and the lower surface 12 are arranged opposite to each other and are parallel to each other, the left surface 13 and the right surface 14 are arranged opposite to each other and are parallel to each other, the front surface 15 and the rear surface 16 are arranged opposite to each other and are parallel to each other, and the upper surface 11, the lower surface 12, the left surface 13, the right surface 14, the front surface 15 and the rear surface 16 are surrounded by the substrate 1; the area of ​​the front surface 15 is larger than the area of ​​the left surface 13, and the area of ​​the front surface 15 is larger than the area of ​​the upper surface 11. Only in this way can the substrate 1 be a rectangular flat plate, which is beneficial for users to distinguish the installation position when installing the door panel.

[0059] Combination Figure 3 and Figure 6 As shown, a frame 2 is provided at the periphery of the front surface 15, and the frame 2 is located on the side of the front surface 15 away from the rear surface 16. The frame 2 includes an upper frame 21, a left frame 22, a lower frame 23 and a right frame 24 which are connected end to end in sequence. The upper frame 21 and the lower frame 23 are arranged opposite to each other and parallel to each other, and the left frame 22 and the right frame 24 are arranged opposite to each other and parallel to each other. The upper frame 21 corresponds to the upper surface 11, the left frame 22 corresponds to the left surface 13, the lower frame 23 corresponds to the lower surface 12, and the right frame 24 corresponds to the right surface 14. Along the thickness direction X of the substrate 1 (also the direction from the front surface 15 to the rear surface 16), the orthographic projection of the frame 2 is located within the orthographic projection of the front surface 15. This arrangement can ensure that along the thickness direction X of the substrate 1, the orthographic projection of the frame 2 is located within the orthographic projection of the substrate 1, so that the frame 2 will not occupy additional space along the thickness direction X of the substrate 1, which is convenient for users to determine the area of ​​the door panel according to the area of ​​the substrate 1.

[0060] Reference Figure 3 As shown, along the thickness direction X of the substrate 1, the orthographic projection of the upper frame 21, the orthographic projection of the left frame 22, the orthographic projection of the lower frame 23 and the orthographic projection of the right frame 24 are all trapezoidal. Figure 5 As shown, the trapezoidal projection of the upper frame 21 includes an upper frame upper base and an upper frame lower base (both are not marked in the figure), and the upper frame upper base is located on the side of the upper frame lower base close to the lower surface 12, and the trapezoidal projection of the left frame 22 includes a left frame upper base and a left frame lower base (both are not marked in the figure), and the left frame upper base is located on the side of the left frame lower base close to the right surface 14, and the left frame lower base is located on the side of the left frame lower base close to the right surface 14. Figure 4As shown, the trapezoidal projection of the lower frame 23 includes the upper bottom of the lower frame and the lower bottom of the lower frame (neither marked in the figure), and the upper bottom of the lower frame is located on the side of the lower bottom of the lower frame close to the upper surface 11. The trapezoidal projection of the right frame 24 includes the upper bottom of the right frame and the lower bottom of the right frame (neither marked in the figure), and the upper bottom of the right frame is located on the side of the lower bottom of the right frame close to the left surface 13. The above-mentioned arrangement ensures that the upper frame 21, the left frame 22, the lower frame 23 and the right frame 24 can be spliced ​​together, reducing the difficulty and assembly time of manufacturing the door panel; the material of the frame 2 can be the same as or different from the material of the substrate 1, and the material of the frame 2 is not specifically limited here.

[0061] Combination Figure 5-Figure 7 As shown, along the width direction Y of the substrate 1 (also the direction from the left surface 13 to the right surface 14), the cross section of the upper frame 21 includes an upper rear edge 211, an upper top edge 212, an upper upper connecting edge 213, an upper oblique edge 214, an upper middle connecting edge 215, an upper front edge 216, an upper and lower connecting edge 217 and an upper bottom edge 218 connected end to end in sequence, and the upper bottom edge 218 is connected to the side of the upper rear edge 211 away from the upper top edge 212 away from the lower connecting edge 217, and the upper rear edge 211 is connected to the side of the upper rear edge 211 away from the upper top edge 212 away from the upper bottom edge 218. The upper bottom edge 218 is located on the side of the upper top edge 212 close to the lower frame 23, the upper rear edge 211 and the upper front edge 216 are arranged opposite to each other and are parallel to each other, the upper rear edge 211, the upper top edge 212, the upper oblique edge 214, the upper front edge 216 and the upper bottom edge 218 are all straight lines, along the length direction Z of the substrate 1 (also the direction from the lower surface 12 to the upper surface 11), the length of the upper rear edge 211 is greater than the length of the upper front edge 216, and the upper top edge 214 is greater than the length of the upper front edge 216. The edge 212 is perpendicular to the upper rear edge 211, the angle between the straight line where the upper top edge 212 is located and the straight line where the upper oblique edge 214 is located, and the angle between the straight line where the upper oblique edge 214 is located and the straight line where the upper upper front edge 216 is located are all obtuse angles, the upper-upper connecting edge 213, the upper-middle connecting edge 215 and the upper-lower connecting edges 217 are all arc-shaped, and the three arc-shaped openings are all facing the upper rear edge 211. This arrangement can ensure that when the user touches the upper frame 21, the user's hand will not be scratched by the sharp structure. The upper frame 21 provided in this embodiment is used to reinforce and decorate the substrate 1. The upper frame 21 has a low manufacturing cost, a smooth, flexible and unique line design, and has sufficient three-dimensional sense and aesthetics. Compared with the door panel frame in the prior art, the upper frame 21 provided in this embodiment makes the door panel visually more layered and decorative, ensuring that the door panel can adapt to different home styles and decoration requirements, and can enhance the overall aesthetics and appreciation of the home.

[0062] Combination Figure 4 and Figure 7As shown, this embodiment explains that the upper frame 21 has a certain width along the length direction Z of the substrate 1 to achieve the performance of the upper frame 21 decorating and protecting the substrate 1. Along the length direction Z of the substrate 1, the width range of the upper frame 21 can be 12mm to 30mm, such as the width of the upper frame 21 can be 12mm, 16mm, 20mm, 25mm, 28mm or 30mm, thereby not only avoiding the problem of insufficient contact area between the upper frame 21 and the front surface 15 when the width of the upper frame 21 is too small, but also avoiding the problem of waste of cost and unsightly door panel when the width of the upper frame 21 is too large. Therefore, this embodiment sets the upper frame 21 along the length direction Z of the substrate 1. The width range in the degree direction Z is set to 12mm to 30mm, which can avoid the lack of sufficient contact area between the upper frame 21 and the front surface 15 while avoiding problems such as waste of costs and the door panel being not beautiful enough; it should be noted that the conventional wooden door panel frame width range in the prior art is 50mm-90mm, and the width of the upper frame 21 provided in this embodiment is significantly smaller than the frame width of the conventional wooden door panel, which can reduce the material cost of manufacturing the frame and save resources. At the same time, the width of the upper frame 21 provided in this embodiment is extremely narrow, which can reduce the blocked area of ​​the substrate 1, making the visual space of the door panel appear more open, enhancing the visual effect, and making the door panel look more refined and light.

[0063] Continue to combine Figure 4 and Figure 7 As shown, this embodiment explains that the upper frame 21 has a certain thickness along the thickness direction X of the substrate 1 to achieve the performance of the upper frame 21 to decorate and protect the substrate 1. Along the thickness direction X of the substrate 1, the thickness range of the upper frame 21 can be 5mm to 12mm. For example, the thickness of the upper frame 21 can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm or 12mm, thereby not only avoiding the problem that the upper frame 21 cannot protect the substrate 1 when the thickness is too thin, but also avoiding the problem that the cost is wasted and the door panel is not beautiful enough when the thickness of the upper frame 21 is too thick. Therefore, this embodiment sets the thickness range of the upper frame 21 along the thickness direction X of the substrate 1 to 5mm to 12mm, which can avoid the problem that the upper frame 21 cannot protect the substrate 1 while avoiding the problem that the cost is wasted and the door panel is not beautiful enough.

[0064] Continue to combine Figure 4 and Figure 7As shown, this embodiment explains that a certain angle α is set between the upper rear edge 211 and the upper bottom edge 218 to achieve the purpose of reducing the cost of the upper frame 21 and decorating the substrate 1. The value range of α is 30° to 60°. For example, the value of α can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, thereby not only avoiding the problem of excessive process difficulty in manufacturing the upper frame 21 when the value of α is too small, but also avoiding the problem of the upper frame 21 being not beautiful enough when the value of α is too large. Therefore, this embodiment sets the value range of the angle α between the upper rear edge 211 and the upper bottom edge 218 to 30° to 60°, which can avoid the problem of excessive process difficulty in manufacturing the upper frame 21 while avoiding the problem of the upper frame 21 being not beautiful enough.

[0065] Combination Figure 3 , Figure 7 As shown, the structures of the left frame 22, the lower frame 23 and the right frame 24 are all the same as the structure of the upper frame 21; it can be understood that, continue to combine Figure 8 As shown, the cross-sectional shape of the left frame 22 along the length direction Z of the substrate 1 is the same as the cross-sectional shape of the upper frame 21 along the width direction Y of the substrate 1. The left frame 22 includes a left rear edge 221, a left outer edge 222, a left outer connecting edge 223, a left oblique edge 224, a left middle connecting edge 225, a left front edge 226, a left inner connecting edge 227 and a left inner edge 228 which are connected end to end in sequence. The left inner edge 228 is connected to the side of the left rear edge 221 away from the left inner connecting edge 227 and the side of the left rear edge 221 away from the left outer edge 222. The left rear edge 221 corresponds to the upper rear edge 211, the left outer edge 222 corresponds to the upper top edge 212, and the left rear edge 221 is connected to the front surface 15.

[0066] Continue to combine Fig. 9 As shown, along the width direction Y of the substrate 1, the cross-sectional shape of the lower frame 23 is the same as the cross-sectional shape of the upper frame 21, and the lower frame 23 includes a lower rear edge 231, a lower top edge 232, a lower upper connecting edge 233, a lower oblique edge 234, a lower middle connecting edge 235, a lower front edge 236, a lower lower connecting edge 237 and a lower bottom edge 238 which are connected end to end in sequence, and the lower bottom edge 238 is connected to the side of the lower rear edge 231 away from the lower top edge 232 away from the lower bottom edge 237, the lower rear edge 231 corresponds to the upper rear edge 211, the lower top edge 232 corresponds to the upper top edge 212, and the lower rear edge 231 is connected to the front surface 15.

[0067] Continue to combine Fig.10As shown, the cross-sectional shape of the right frame 24 along the length direction Z of the substrate 1 is the same as the cross-sectional shape of the upper frame 21 along the width direction Y of the substrate 1. The right frame 24 includes a right rear edge 241, a right outer edge 242, a right outer connecting edge 243, a right oblique edge 244, a right middle connecting edge 245, a right front edge 246, a right inner connecting edge 247 and a right inner edge 248 which are connected end to end in sequence. The right inner edge 248 is connected to the side of the right rear edge 241 away from the right inner connecting edge 247, and the right rear edge 241 is connected to the upper rear edge 211, the right outer edge 242 is corresponding to the upper top edge 212, and the right rear edge 241 is connected to the front surface 15. The structures of the left frame 22, the lower frame 23 and the right frame 24 can all refer to the structure of the upper frame 21, and the structures of the left frame 22, the lower frame 23 and the right frame 24 are not repeated here.

[0068] Optionally, refer to Figure 6 As shown, the upper frame 21 and the front surface 15 can be connected by glue. The use of glue can reduce the difficulty and time of assembly between the upper frame 21 and the substrate 1. The selected glue can be panel glue or assembly glue. These glues have good effects on gluing wooden boards. As long as the upper frame 21 and the front surface 15 can be glued together, the type of glue selected can be adaptively adjusted according to actual conditions, and is not limited here.

[0069] Optionally, combined Figure 6-Figure 7 As shown, the area where the front surface 15 contacts the upper rear edge 211 and the upper rear edge 211 are both rough surfaces (not shown in the figure). Since the front surface 15 abuts against the upper rear edge 211 when the upper frame 21 and the base plate 1 are assembled together, the area where the front surface 15 contacts the upper rear edge 211 and the upper rear edge 211 are both rough surfaces. This can increase the friction between the contact surfaces, strengthen the splicing effect between the upper frame 21 and the base plate 1, prevent the upper frame 21 from falling off the base plate 1, and ensure the tightness of the overall structure of the door panel.

[0070] Combination Figure 6-Figure 7 , Figure 11-13 As shown, the upper frame 21 and the front surface 15 can be connected by a mortise and tenon structure. When the upper frame 21 and the front surface 15 are connected by the mortise and tenon structure, the area where the front surface 15 contacts the upper rear edge 211 is provided with a front upper outer protrusion 151 facing the upper rear edge 211, the upper rear edge 211 is provided with an upper rear groove 2111 matching with the front upper outer protrusion 151, and the front upper outer protrusion 151 is inserted into the upper rear groove 2111; and / or, the upper rear edge 211 is provided with an upper rear outer protrusion 2112 facing the front surface 15, the area where the front surface 15 contacts the upper rear edge 211 is provided with a front upper groove 152 matching with the upper rear outer protrusion 2112, and the upper rear outer protrusion 2112 is inserted into the front upper groove 152.

[0071] Specifically, the upper frame 21 and the front surface 15 provided in this embodiment have at least the following splicing structures:

[0072] The first splicing structure: reference Fig.11 As shown, the area where the front surface 15 contacts the upper rear edge 211 is provided with a front upper outer protrusion 151 facing the upper rear edge 211, and the upper rear edge 211 is provided with an upper rear groove 2111 matching with the front upper outer protrusion 151, and the front upper outer protrusion 151 is inserted into the upper rear groove 2111; the upper frame 21 and the front surface 15 are connected through the mutual matching between the front upper outer protrusion 151 and the upper rear groove 2111.

[0073] The second splicing structure: reference Fig.12 As shown, the upper rear edge 211 is provided with an upper rear outer protrusion 2112 facing the front surface 15, and the area where the front surface 15 contacts the upper rear edge 211 is provided with a front upper groove 152 matching with the upper rear outer protrusion 2112, and the upper rear outer protrusion 2112 is inserted into the front upper groove 152; the upper frame 21 and the front surface 15 are connected through the mutual cooperation between the upper rear outer protrusion 2112 and the front upper groove 152.

[0074] The third splicing structure: reference Fig.13 As shown, the area where the front surface 15 contacts the upper rear edge 211 is provided with a front upper outer protrusion 151 facing the upper rear edge 211, the upper rear edge 211 is provided with an upper rear groove 2111 matching with the front upper outer protrusion 151, the front upper outer protrusion 151 is inserted into the upper rear groove 2111, and at the same time, the upper rear edge 211 is provided with an upper rear outer protrusion 2112 facing the front surface 15, and the area where the front surface 15 contacts the upper rear edge 211 is provided with a front upper groove 152 matching with the upper rear outer protrusion 2112, the upper rear outer protrusion 2112 is inserted into the front upper groove 152; the upper frame 21 and the front surface 15 are connected by the mutual cooperation between the front upper outer protrusion 151 and the upper rear groove 2111, and the mutual cooperation between the upper rear outer protrusion 2112 and the front upper groove 152.

[0075] The above three splicing structures all include a connection method in which protrusions and grooves cooperate with each other. Since the area where the front surface 15 contacts the upper rear edge 211 and the upper rear edge 211 are both rough structures, after the protrusion is inserted into the groove, the tightness of the connection between the upper frame 21 and the substrate 1 is ensured due to the action of friction. The connection method in which the protrusions and grooves cooperate with each other can omit glue and reduce the cost of manufacturing the door panel.

[0076] Optionally, refer to Fig.11 or Fig.13 As shown, along the width direction Y of the substrate 1, the cross-sectional shape of the front upper outer protrusion 151 is a quadrilateral or a triangle, referring to Fig.12 or Fig.13As shown, along the width direction Y of the substrate 1, the cross-sectional shape of the upper rear outer protrusion 2112 is a quadrilateral or a triangle. As long as it is possible to splice the upper frame 21 and the substrate 1 together, the cross-sectional shape, number of protrusions, and protrusion positions of the front upper outer protrusion 151 and the upper rear outer protrusion 2112 can be adaptively adjusted according to actual conditions, and no limitation is made here.

[0077] It should be noted that, combined with Figure 3-Figure 6 As shown, in order to reduce the process difficulty and assembly time of manufacturing the door panel, the connection method between the left frame 22 and the front surface 15, the connection method between the lower frame 23 and the front surface 15, and the connection method between the right frame 24 and the front surface 15 can all be set with reference to the connection method between the upper frame 21 and the front surface 15, that is, the connection method between the left frame 22 and the front surface 15 can be the same as or different from the connection method between the upper frame 21 and the front surface 15, the connection method between the lower frame 23 and the front surface 15 can be the same as or different from the connection method between the upper frame 21 and the front surface 15, and the connection method between the right frame 24 and the front surface 15 can be the same as or different from the connection method between the upper frame 21 and the front surface 15. As long as it can be ensured that the upper frame 21, the left frame 22, the lower frame 23 and the right frame 24 are respectively connected to the substrate 1, the connection method between each frame and the front surface 15 can be adaptively adjusted according to actual conditions, and no specific limitation is made here.

[0078] Combination Figure 4-Figure 6 , Fig.14 As shown, an upper edge seal 31 is provided on the side of the upper surface 11 away from the lower surface 12. The upper edge seal 31 can be a rectangular thin plate, and along the thickness direction X of the substrate 1, the width of the upper edge seal 31 is greater than the width of the upper surface 11. Optionally, continue to combine Figure 7 As shown, along the thickness direction X of the substrate 1, the width of the upper edge seal 31 is equal to the sum of the width of the upper surface 11 and the width of the upper top edge 212. This arrangement allows the upper edge seal 31 to cover the upper surface 11 and the upper frame 21. The upper edge seal 31 plays a role in strengthening the connection between the upper surface 11 and the upper frame 21, protecting the door panel, and installing the door panel; the upper edge seal 31 can be connected to the upper surface 11 and the upper frame 21 by glue. The material of the upper edge seal 31, the type of glue, etc. can be adaptively adjusted according to actual conditions, and no specific limitation is made here.

[0079] Combination Figure 4-Figure 6 , Fig.14 As shown, a lower edge seal 33 is provided on the side of the lower surface 12 away from the upper surface 11. The lower edge seal 33 can be a rectangular thin plate, and along the thickness direction X of the substrate 1, the width of the lower edge seal 33 is greater than the width of the lower surface 12. Optionally, continue to combine Fig. 9As shown, along the thickness direction X of the substrate 1, the width of the lower edge seal 33 is equal to the sum of the width of the lower surface 12 and the width of the lower top edge 232. This arrangement allows the lower edge seal 33 to cover the lower surface 12 and the lower frame 23. The lower edge seal 33 serves to strengthen the connection between the lower surface 12 and the lower frame 23, protect the door panel, and install the door panel; the lower edge seal 33 can be connected to the lower surface 12 and the lower frame 23 by glue. The material of the lower edge seal 33, the type of glue, etc. can be adaptively adjusted according to actual conditions, and no specific limitation is made here.

[0080] Combination Figure 4-Figure 6 , Fig.14 As shown, a left edge seal 32 is provided on the side of the left surface 13 away from the right surface 14. The left edge seal 32 may be a rectangular thin plate, and along the thickness direction X of the substrate 1, the width of the left edge seal 32 is greater than the width of the left surface 13. Optionally, continue to combine Figure 8 As shown, along the thickness direction X of the substrate 1, the width of the left edge seal 32 is equal to the sum of the width of the left surface 13 and the width of the left outer edge 222. This arrangement allows the left edge seal 32 to cover the left surface 13 and the left frame 22. The left edge seal 32 plays a role in strengthening the connection between the left surface 13 and the left frame 22, protecting the door panel, and installing the door panel; the left edge seal 32 can be connected to the left surface 13 and the left frame 22 by glue. The material of the left edge seal 32, the type of glue, etc. can be adaptively adjusted according to actual conditions, and no specific limitation is made here.

[0081] Combination Figure 4-Figure 6 , Fig.14 As shown, a right edge seal 34 is provided on the side of the right surface 14 away from the left surface 13. The right edge seal 34 can be a rectangular thin plate, and along the thickness direction X of the substrate 1, the width of the right edge seal 34 is greater than the width of the right surface 14. Optionally, continue to combine Fig.10 As shown, along the thickness direction X of the substrate 1, the width of the right edge seal 34 is equal to the sum of the width of the right surface 14 and the width of the right outer edge 242. This arrangement allows the right edge seal 34 to cover the right surface 34 and the right frame 24. The right edge seal 34 plays a role in strengthening the connection between the right surface 14 and the right frame 24, protecting the door panel, and installing the door panel; the right edge seal 34 and the right surface 34 and the right frame 24 can be connected by glue. The material of the right edge seal 34 and the type of glue can be adaptively adjusted according to actual conditions, and no specific limitation is made here.

[0082] Optionally, combined Figure 4-Figure 5 , Figure 7 , Fig.14As shown, along the length direction Z of the substrate 1, the upper top edge 212 and the upper surface 11 are located in the same horizontal plane, and along the thickness direction X of the substrate 1, the width of the upper edge 31 is equal to the sum of the width of the upper surface 11 and the width of the upper top edge 212. This arrangement is conducive to the upper edge 31 completely covering the upper surface 11 and the upper frame 21; similarly, combined with Figure 4-Figure 5 , Fig. 9 , Fig.14 As shown, along the length direction Z of the substrate 1, the lower top edge 232 and the lower surface 12 are located in the same horizontal plane, and along the thickness direction X of the substrate 1, the width of the lower edge seal 33 is equal to the sum of the width of the lower surface 12 and the width of the lower top edge 232. This arrangement is conducive to the lower edge seal 33 completely covering the lower surface 12 and the lower frame 23; combined Figure 4-Figure 5 , Figure 8 , Fig.14 As shown, along the width direction Y of the substrate 1, the left outer edge 222 and the left surface 13 are located in the same horizontal plane, and along the thickness direction X of the substrate 1, the width of the left edge seal 32 is equal to the sum of the width of the left surface 13 and the width of the left outer edge 222. This arrangement is conducive to the left edge seal 32 completely covering the left surface 13 and the left frame 22; Figure 4-Figure 5 , Fig.10 , Fig.14 As shown, along the width direction Y of the substrate 1, the right outer edge 242 and the right surface 14 are located in the same horizontal plane, and along the thickness direction X of the substrate 1, the width of the right edge seal 34 is equal to the sum of the width of the right surface 14 and the width of the right outer edge 242. This arrangement is conducive to the right edge seal 34 completely covering the right surface 14 and the right frame 24.

[0083] Reference Fig.14 As shown, the door panel provided in this embodiment does not have excessive frames and decorations compared to the wooden door panels in the prior art. At the same time, the narrower frames make the door panels easier to clean, reducing the difficulty and time of cleaning. In addition, the door panel provided in this embodiment can not only be used alone as a door to separate adjacent rooms, but also can be used as a cabinet door in a cabinet. The uses of the door panel provided in this embodiment include but are not limited to this and are not specifically limited here.

[0084] Example 2

[0085] Fig.15 1 is a flow chart of a method for preparing a door panel provided by the present invention. Fig.15 As shown, this embodiment provides a method for preparing a door panel, comprising the following steps:

[0086] S1: Combination Figure 4-Figure 5As shown, the raw material is cut by cutting equipment to obtain the substrate 1; wherein, the cutting equipment can be a sawing machine or a cutting machine, which has high cutting accuracy and can ensure that the edge of the cut substrate 1 is smooth and the size is accurate, thereby preparing for the subsequent processing of the substrate 1; the material of the raw material can be wood (such as density board, etc.); the substrate 1 is a rectangular flat plate, and the substrate 1 includes an upper surface 11, a lower surface 12, a left surface 13, a right surface 14, a front surface 15 and a rear surface 16, the upper surface 11 and the lower surface 12 are arranged oppositely and parallel to each other, the left surface 13 and the right surface 14 are arranged oppositely and parallel to each other, the front surface 15 and the rear surface 16 are arranged oppositely and parallel to each other, and the size of the substrate 1 needs to be determined by the user according to the actual design size and requirements of the door panel, and is not specifically limited here.

[0087] In addition, the base plate 1 can also be milled with lines. The specific process is that the staff selects a suitable milling cutter and milling machine according to the pre-designed door panel, and then places the base plate 1 on the milling machine and fixes the position. Then the milling machine is started, and the milling cutter mills the base plate 1 according to the predetermined lines and shapes. The lines after milling are required to be smooth and uniform.

[0088] S2: Continue to combine Figure 6 As shown, the frame 2 is assembled on the front surface 15 to obtain a framed substrate; wherein the frame 2 includes an upper frame 21, a left frame 22, a lower frame 23 and a right frame 24 which are connected end to end in sequence, the upper frame 21 and the lower frame 23 are arranged opposite to each other and parallel to each other, the left frame 22 and the right frame 24 are arranged opposite to each other and parallel to each other, the upper frame 21 is connected to the side of the front surface 15 close to the upper surface 11, the left frame 22 is connected to the side of the front surface 15 close to the left surface 13, the lower frame 23 is connected to the side of the front surface 15 close to the lower surface 12, and the right frame 24 is connected to the side of the front surface 15 close to the right surface 14; the structures of the upper frame 21, the left frame 22, the lower frame 23 and the right frame 24 and the connection methods between each structure and the front surface 15 can all be described in Example 1, and no specific limitation is made here; the frame 2 can be formed by one-time cutting using a milling cutter.

[0089] In addition, the substrate 1 can also be veneered. The specific process is that the staff uses a skin that matches the pre-designed door panel (such as veneer or artificial leather, etc.), and sticks the skin to the surface of the substrate 1 through an adhesive (such as wood glue, etc.). It is required to ensure that the skin fits tightly to the substrate 1 without bubbles and wrinkles.

[0090] S3: Continue to combine Fig.14As shown, the edge seal is assembled on a substrate with a frame to obtain a substrate with edge seal; wherein the edge seal includes an upper edge seal 31, a left edge seal 32, a lower edge seal 33 and a right edge seal 34, the upper edge seal 31 is connected to the upper surface 11 and a part of the upper frame 21, the left edge seal 32 is connected to the left surface 13 and a part of the left frame 22, the lower edge seal 33 is connected to the lower surface 12 and a part of the lower frame 23, and the right edge seal 34 is connected to the right surface 14 and a part of the right frame 24; the structures of the upper edge seal 31, the left edge seal 32, the lower edge seal 33 and the right edge seal 34 and the connection methods of each structure with the substrate 1 can all refer to the description in Example 1, and are not specifically limited here.

[0091] S4: The edge-banded substrate is polished, painted, naturally dried and cured in sequence to obtain a door panel; wherein, the polishing process is as follows: the surface and edge of the edge-banded substrate are polished using polishing tools such as sandpaper, grinding wheel or grinder, and the force should be kept uniform during the polishing process to avoid damage to the door panel structure, and the polishing is to remove burrs, uneven parts on the surface and excess glue generated during edge sealing; the painting process is as follows: a spray gun or brush and other tools are used to select primer and topcoat to paint the edge-banded substrate, and during the painting process, attention should be paid to controlling the thickness and uniformity of the coating to avoid color difference and uneven coating; natural drying and curing are both existing technologies in the field and will not be repeated here.

[0092] It should be noted that the above describes a method for preparing a door panel. In other embodiments, the method for preparing a door panel can be adaptively adjusted according to actual conditions and is not limited here. The structure of the door panel prepared by the method for preparing a door panel provided in this embodiment may be the same as or different from that in Example 1 and will not be repeated here.

[0093] Example 3

[0094] Fig.16 Schematic diagram of the structure of a cabinet provided by the present invention. Fig.16 As shown, this embodiment provides a cabinet 00, which can be any cabinet such as a cupboard, a shoe cabinet, a wardrobe, a wine cabinet, a display cabinet, etc., which is not limited here; the cabinet 00 includes a cabinet door, which can have the same door panel structure as in embodiment 1, and continues to combine Figure 3-Figure 14As shown, the cabinet door includes a base plate 1, which is a rectangular flat plate. The base plate 1 includes an upper surface 11, a lower surface 12, a left surface 13, a right surface 14, a front surface 15 and a rear surface 16. The upper surface 11 and the lower surface 12 are arranged opposite to each other and are parallel to each other, the left surface 13 and the right surface 14 are arranged opposite to each other and are parallel to each other, the front surface 15 and the rear surface 16 are arranged opposite to each other and are parallel to each other, and the upper surface 11, the lower surface 12, the left surface 13, the right surface 14, the front surface 15 and the rear surface 16 are surrounded by the base plate 1, the front surface 15 is located on the side of the rear surface 16 away from the internal space of the cabinet, and a frame 2 is arranged on the periphery of the front surface 15, and the frame 2 is located on the side of the front surface 15 away from the rear surface 16. The frame 2 includes an upper frame 21, The left frame 22, the lower frame 23 and the right frame 24, the upper frame 21 and the lower frame 23 are arranged opposite to each other and parallel to each other, the left frame 22 and the right frame 24 are arranged opposite to each other and parallel to each other, the upper frame 21 corresponds to the upper surface 11, the left frame 22 corresponds to the left surface 13, the lower frame 23 corresponds to the lower surface 12, and the right frame 24 corresponds to the right surface 14; an upper edge seal 31 is provided on the side of the upper surface 11 away from the lower surface 12, a lower edge seal 33 is provided on the side of the lower surface 12 away from the upper surface 11, a left edge seal 32 is provided on the side of the left surface 13 away from the right surface 14, and a right edge seal 34 is provided on the side of the right surface 14 away from the left surface 13; other information about the structure, manufacturing method and the like of the door panel can refer to the description in Example 1 and Example 2, which will not be repeated here.

[0095] It can be seen from the above embodiments that the door panel and the preparation method thereof, and the cabinet provided by the present invention achieve at least the following beneficial effects:

[0096] The present invention provides a door panel, a preparation method thereof, and a cabinet body. The door panel includes a base plate, and a front surface of the base plate is surrounded by a frame. Compared with the frame in the prior art, the frame has an improved shape and a reduced width. The improved frame line design is smoother, more flexible and unique, with sufficient three-dimensional sense and aesthetics, so that the door panel has more layered and decorative visually, ensuring that the door panel can adapt to different home styles and decoration requirements, can enhance the overall aesthetics and ornamental value of the home, and expand the scope of application of the door panel. Compared with the prior art, the door panel manufactured by the frame has a simpler processing technology, can save more raw materials, and significantly reduces the manufacturing cost. At the same time, the door panel has no excessive frames and decorations, is easier to clean, and can reduce the difficulty and time of cleaning the door panel.

[0097] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A door panel, characterized in that: It includes a base plate, the base plate is a rectangular flat plate, the base plate is a solid structure, and the material of the base plate is wood; The substrate comprises an upper surface, a lower surface, a left surface, a right surface, a front surface and a rear surface, wherein the upper surface and the lower surface are arranged opposite to each other and are parallel to each other, the left surface and the right surface are arranged opposite to each other and are parallel to each other, the front surface and the rear surface are arranged opposite to each other and are parallel to each other, and the upper surface, the lower surface, the left surface, the right surface, the front surface and the rear surface are arranged to form the substrate; A frame is provided at the periphery of the front surface, the frame comprising an upper frame, a left frame, a lower frame and a right frame connected end to end in sequence, the upper frame and the lower frame are arranged opposite to each other and parallel to each other, the left frame and the right frame are arranged opposite to each other and parallel to each other, along the thickness direction of the substrate, the orthographic projection of the frame is located within the orthographic projection of the front surface, and the orthographic projections of the upper frame, the left frame, the lower frame and the right frame are all trapezoidal; Along the width direction of the substrate, the cross section of the upper frame includes an upper rear edge, an upper top edge, an upper-upper connecting edge, an upper oblique edge, an upper middle connecting edge, an upper front edge, an upper and lower connecting edge and an upper bottom edge which are sequentially connected end to end, the upper rear edge and the upper front edge are arranged opposite to each other and are parallel to each other, the upper top edge and the upper rear edge are perpendicular to each other, the angle between the straight line where the upper top edge is located and the straight line where the upper oblique edge is located, and the angle between the straight line where the upper oblique edge is located and the straight line where the upper-upper front edge is located are all obtuse angles, the upper-upper connecting edge, the upper middle connecting edge and the upper and lower connecting edges are all arc-shaped, and the openings of the three arcs are all facing the upper rear edge, the upper rear edge is connected to the front surface, and the upper bottom edge is located on the side of the upper top edge close to the lower frame; Along the length direction of the substrate, the width of the upper frame ranges from 12 mm to 30 mm, and along the thickness direction of the substrate, the thickness of the upper frame ranges from 5 mm to 12 mm. An angle α is set between the upper rear edge and the upper bottom edge, and the value range of α is 30° to 60°; The upper frame and the front surface are connected by glue or by a mortise and tenon structure; The structure of the left frame, the structure of the lower frame and the structure of the right frame are the same as the structure of the upper frame.

2. The door panel according to claim 1, characterized in that: The upper surface is connected to an upper edge seal on a side away from the lower surface, and the lower surface is connected to a lower edge seal on a side away from the upper surface. In the thickness direction of the substrate, the width of the upper edge seal is greater than the width of the upper surface, and the width of the lower edge seal is greater than the width of the lower surface. The left surface is connected to a left edge seal on a side away from the right surface, and the right surface is connected to a right edge seal on a side away from the left surface. Along the thickness direction of the substrate, the width of the left edge seal is greater than the width of the left surface, and the width of the right edge seal is greater than the width of the right surface.

3. The door panel according to claim 1, characterized in that: The area where the front surface contacts the upper rear edge and the upper rear edge are both rough surfaces.

4. The door panel according to claim 1, characterized in that: When the upper frame is connected to the front surface by the mortise and tenon structure, the area where the front surface contacts the upper rear edge is provided with a front upper outer protrusion facing the upper rear edge, the upper rear edge is provided with an upper rear groove matching with the front upper outer protrusion, and the front upper outer protrusion is inserted into the upper rear groove; and / or, The upper rear edge is provided with an upper rear outer protrusion facing the front surface, and the area where the front surface contacts the upper rear edge is provided with a front upper groove matched with the upper rear outer protrusion, and the upper rear outer protrusion is inserted into the front upper groove.

5. The door panel according to claim 4, characterized in that: Along the width direction of the substrate, the cross-sectional shape of the front upper outer protrusion and / or the upper rear outer protrusion is a quadrilateral or a triangle.

6. The door panel according to claim 1, characterized in that: The area of ​​the front surface is larger than that of the left surface, and the area of ​​the front surface is larger than that of the upper surface.

7. The door panel according to claim 1, characterized in that: Along the length direction of the substrate, the upper top edge and the upper surface are located in the same horizontal plane.

8. The door panel according to claim 2, characterized in that: Along the thickness direction of the substrate, the width of the upper sealing edge is equal to the sum of the width of the upper surface and the width of the upper top edge.

9. A method for preparing a door panel according to any one of claims 1 to 8, characterized in that: The following steps are involved: Cutting the raw material with a cutting device to obtain a substrate; wherein the substrate is a rectangular flat plate, and comprises an upper surface, a lower surface, a left surface, a right surface, a front surface and a rear surface, wherein the upper surface and the lower surface are arranged oppositely and parallel to each other, the left surface and the right surface are arranged oppositely and parallel to each other, and the front surface and the rear surface are arranged oppositely and parallel to each other; Assemble the frame on the front surface to obtain a framed substrate; wherein the frame includes an upper frame, a left frame, a lower frame and a right frame connected end to end in sequence, the upper frame and the lower frame are arranged oppositely and parallel to each other, the left frame and the right frame are arranged oppositely and parallel to each other, the upper frame is connected to the side of the front surface close to the upper surface, the left frame is connected to the side of the front surface close to the left surface, the lower frame is connected to the side of the front surface close to the lower surface, and the right frame is connected to the side of the front surface close to the right surface; Assembling the edge seal on the framed substrate to obtain the edge seal substrate; wherein the edge seal comprises an upper edge seal, a left edge seal, a lower edge seal and a right edge seal, the upper edge seal is connected to the upper surface and a part of the upper frame, the left edge seal is connected to the left surface and a part of the left frame, the lower edge seal is connected to the lower surface and a part of the lower frame, and the right edge seal is connected to the right surface and a part of the right frame; The substrate with edge sealing is polished, painted, naturally dried and cured in sequence to obtain a door panel.

10. A cabinet, characterized in that: It comprises a cabinet door, and the cabinet door is the door panel according to any one of claims 1-8.

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