Appearance parts, household appliances and molds

Abstract

The present invention provides an appearance component, a household appliance, and a mold. The appearance component is a spray-free injection molded part, comprising an appearance component body including a grille structure symmetrically arranged relative to a reference plane. The appearance component body has an appearance surface and a non-appearance surface, and the non-appearance surface has a gate molding area corresponding to the mold's gate. The grille structure comprises a first component, a second component, and a third component connected in sequence perpendicular to the reference plane, the first, second, and third components having equal widths in the direction perpendicular to the reference plane. The gate molding area is located on the second component. The appearance component of the present invention solves the problem of spray-free injection molded parts in the prior art being prone to appearance defects.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and in particular to an appearance component, a household appliance and a mold. Background Art

[0002] Currently, home appliances typically use spraying to surface-treat injection molded parts, enhancing various colors and textures while also masking some cosmetic flaws. However, this approach presents challenges such as high cost and environmental impact. Therefore, spray-free technology can be used to replace and address these issues. Injection molded parts made with spray-free materials exhibit unique light and shadow effects and a metallic sheen after molding, achieving an appearance comparable to or superior to spray-coated parts without requiring secondary processing. This technology offers advantages such as excellent functionality, low cost, and environmental friendliness.

[0003] However, spray-free materials are very prone to appearance defects such as flow marks, weld marks, and gate marks during the injection molding process, and the location or extent of occurrence is difficult to predict and the consistency is poor. Summary of the Invention

[0004] The main purpose of the present invention is to provide an appearance component, a household appliance and a mold to solve the problem in the prior art that spray-free injection molded parts are prone to appearance defects.

[0005] To achieve the above-mentioned object, according to one aspect of the present invention, there is provided an appearance component, which is a spray-free injection molded part, and includes an appearance component body, which includes a grid structure, and the grid structure is symmetrically arranged relative to a reference plane; the appearance component body has an appearance surface and a non-appearance surface, and the non-appearance surface has a gate molding area corresponding to the gate of the mold; wherein, along a direction perpendicular to the reference plane, the grid structure includes a first component, a second component, and a third component connected in sequence, and the widths of the first component, the second component, and the third component in the direction perpendicular to the reference plane are equal; wherein, the gate molding area is located on the second component.

[0006] Furthermore, the gate molding area is symmetrically arranged relative to the reference plane.

[0007] Furthermore, the grid structure forms a plurality of communicating holes, which are strip-shaped holes. The extending direction of the strip-shaped holes is perpendicular to the reference plane, and the plurality of communicating holes are spaced apart in a direction perpendicular to the extending direction thereof.

[0008] Furthermore, the gate molding area is symmetrically arranged relative to the reference plane; a first weld line is provided between each of two adjacent communicating holes, and at least a portion of the first weld line coincides with the reference plane; or, the first weld line is arranged close to the reference plane.

[0009] Furthermore, the grid structure forms a plurality of communicating holes, which are strip-shaped holes. The extending direction of the strip-shaped holes is parallel to the reference plane, and the plurality of communicating holes are spaced apart in a direction perpendicular to the extending direction.

[0010] Furthermore, the gate molding area is symmetrically arranged relative to the reference plane; in the extension direction of the strip hole, the gate molding area and the second weld line assembly are located on opposite sides of the strip hole; the second weld line assembly includes a plurality of second weld lines, and the plurality of second weld lines are arranged one-to-one corresponding to the plurality of connecting holes, and each second weld line extends from the corresponding connecting hole to the edge of the appearance part body; wherein, the second weld line assembly is symmetrically arranged relative to the reference plane.

[0011] Furthermore, a gate molding area is provided on the non-appearance surface, and the length of the appearance part body in any extension direction thereof is less than or equal to 400 mm.

[0012] Furthermore, the appearance part body has a top surface, a bottom surface and side walls extending in the circumferential direction of the appearance part body in a relatively arranged manner; the top surface and the side walls are both appearance surfaces, and the bottom surface is a non-appearance surface; the gate molding area is arranged on the bottom surface and extends to the connection between the bottom surface and the side walls.

[0013] Furthermore, the appearance part body has a top surface, a bottom surface and side walls extending in the circumferential direction of the appearance part body; the top surface is the appearance surface, and at least part of the side wall and the bottom surface are non-appearance surfaces; the gate molding area is arranged on the bottom surface and extends to the connection between the bottom surface and the side wall; or, the gate molding area is arranged on the side wall; or, the gate molding area is arranged on the side wall and the bottom surface.

[0014] Furthermore, the grid structure includes a plurality of parallel bars, with a connecting hole between two adjacent bars; the grid structure has a first end and a second end arranged opposite to each other in a direction perpendicular to the reference plane; the thickness of the plurality of bars in the direction from the reference plane to the first end of the grid structure gradually increases, and the thickness of the plurality of bars in the direction from the reference plane to the second end of the grid structure gradually increases.

[0015] Furthermore, the length of the gate molding area along its longitudinal direction is greater than or equal to 8 mm; and / or the width of the gate molding area along its width direction is in the range of 0.6 mm to 2 mm.

[0016] Furthermore, the exterior surface is provided with brushed lines, and the extension direction of the brushed lines is parallel to the flow direction of the injection melt.

[0017] Furthermore, the appearance component is made of a spray-free material, which includes a base material and particles distributed in the base material; wherein the base material is a thermoplastic polymer material; and the particles are at least one of metal particles, pearlescent powder and fibers.

[0018] According to another aspect of the present invention, a household appliance is provided, comprising an appearance component, wherein an appearance surface of the appearance component forms at least a portion of the appearance surface of the household appliance, wherein the appearance component is the appearance component described above.

[0019] According to another aspect of the present invention, a mold is provided, wherein the mold has a cavity for forming the above-mentioned appearance component, and the mold further has a gate, which is connected to the cavity.

[0020] Furthermore, the gate is a fan-shaped gate.

[0021] Furthermore, the mold also has a buffer runner and a melt inlet. The first end of the buffer runner is connected to the melt inlet, and the buffer runner is connected to the end of the gate away from the cavity, so that the injection melt flows through the melt inlet, the buffer runner and the gate in sequence and then enters the cavity.

[0022] The appearance component of the present invention is manufactured using spray-free technology. This appearance component is an injection-molded product made of a spray-free material. The appearance component's main body includes a grid structure, and the non-exterior surface of the appearance component's main body has a gate molding area corresponding to the mold's gate. By arranging the grid structure symmetrically relative to a reference plane, which intersects with the second component of the grid structure, and arranging the gate molding area on the grid structure, this appearance component achieves balanced flow and pressure inflow, allowing the injection melt to reach and fill the structures on both sides of the gate molding area at approximately the same time. This facilitates the formation of symmetrical fountain flow, reduces surface defects, and addresses the problem of appearance defects easily occurring on spray-free injection molded parts. Furthermore, pressure balancing helps control warping and deformation of the appearance component. Furthermore, arranging the gate molding area on the second component aligns weld lines and unclutters them, optimizing the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It shows an axonometric view of a first embodiment of an appearance component according to the present invention;

[0025] Figure 2 A top view of a first embodiment of an appearance component according to the present invention is shown;

[0026] Figure 3 Shown Figure 2 A cross-sectional view of the appearance component at section AA;

[0027] Figure 4 A schematic diagram showing a first weld line of a first embodiment of an appearance component according to the present invention is shown;

[0028] Figure 5 shows an axonometric view of a second embodiment of an appearance component according to the present invention;

[0029] Figure 6 A top view showing a second embodiment of an appearance component according to the present invention;

[0030] Figure 7 Shown Figure 6 A cross-sectional view of the appearance component at section BB; and

[0031] Figure 8 A schematic diagram showing a second weld line of a second embodiment of an appearance component according to the present invention is shown.

[0032] The above drawings include the following reference numerals:

[0033] 10. Appearance part body; 11. Appearance surface; 12. Non-appearance surface; 13. Top surface; 14. Bottom surface; 15. Side wall; 16. First component; 17. Second component; 18. Third component; 20. Connecting hole; 30. Gate; 40. Gate molding area; 50. Reference plane; 60. First weld line; 80. Second weld line assembly; 81. Second weld line; 90. Melt inlet; 100. Buffer runner. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] The present invention provides an appearance component, please refer to Figures 1 to 8The appearance component is a spray-free injection molded part, and the appearance component includes an appearance component body 10, which includes a grid structure. The grid structure is symmetrically arranged relative to the reference plane 50; the appearance component body 10 has an appearance surface 11 and a non-appearance surface 12, and the non-appearance surface 12 has a gate molding area 40 corresponding to the gate 30 of the mold; wherein, along the direction perpendicular to the reference plane 50, the grid structure includes a first component 16, a second component 17 and a third component 18 connected in sequence, and the widths of the first component 16, the second component 17 and the third component 18 in the direction perpendicular to the reference plane are equal; wherein the gate molding area 40 is located on the second component 17.

[0038] The exterior component of the present invention is manufactured using spray-free technology. This component is an injection-molded product made of a spray-free material. The exterior component's exterior body 10 includes a lattice structure, and its non-exterior surface 12 has a gate molding area 40 corresponding to the mold's gate 30. By symmetrically positioning the lattice structure relative to a reference plane 50, which intersects with the lattice structure's second component 17, and positioning the gate molding area 40 on the lattice structure, this component achieves balanced flow and pressure inflow, allowing the injection molded melt to reach and fill the structures on both sides of the gate molding area 40 at approximately the same time. This facilitates symmetrical fountain flow, reduces appearance defects on the exterior surface 11, and addresses the issue of appearance defects easily occurring in spray-free injection molded parts. Furthermore, pressure balance helps control warping and deformation of the exterior component. Furthermore, positioning the gate molding area 40 on the second component 17 aligns weld lines, maximizing the appearance.

[0039] Among them, spray-free injection molded parts have unique light and shadow effects and metallic luster after molding, and can achieve an appearance effect comparable to or better than spraying without secondary processing. This technology has the advantages of excellent functionality, low cost, and environmental protection.

[0040] It should be noted that when a mold is used to injection mold the appearance parts, the mold cavity is used to mold the appearance parts, the gate 30 (also called the pouring gate) is connected to the cavity, and the material in the gate 30 will form a gate molding part. The area where the appearance part is connected to the gate molding part is the gate molding area 40.

[0041] It should be noted that when the appearance component is applied to a household appliance, the appearance surface 11 is an integral part of the appearance of the household appliance, that is, the appearance surface 11 is the surface exposed in the application environment and can be seen by the user; the non-appearance surface 12 is located inside the household appliance, that is, the non-appearance surface 12 is the surface hidden inside the household appliance and cannot be seen by the user.

[0042] Specifically, along the direction parallel to the reference plane, the width of the first component 16 in the direction perpendicular to the reference plane remains unchanged, the width of the second component 17 in the direction perpendicular to the reference plane remains unchanged, and the width of the third component 18 in the direction perpendicular to the reference plane remains unchanged.

[0043] In this embodiment, the gate molding area 40 is symmetrically arranged relative to the reference plane 50. Such an arrangement can ensure that the flow of the glue on both sides of the reference plane 50 tends to be symmetrical and balanced.

[0044] In the first embodiment, if Figures 1 to 4 The grid structure forms a plurality of communicating holes 20 , which are strip-shaped holes. The extending direction of the strip-shaped holes is perpendicular to the reference plane 50 , and the plurality of communicating holes 20 are spaced apart in a direction perpendicular to the extending direction thereof.

[0045] In the first embodiment, if Figures 1 to 4 The gate molding area 40 is symmetrically arranged relative to the reference plane 50; a first weld line 60 is provided between each of the two adjacent communicating holes 20, and at least a portion of the first weld line 60 coincides with the reference plane 50; alternatively, the first weld line 60 is arranged near the reference plane 50. The first weld line 60 appears on the exterior surface 11. The above arrangement ensures that the first weld line 60 is approximately on the reference plane 50 and makes the distribution of the first weld line 60 more regular, resulting in a more aesthetically pleasing exterior component. It should be noted that, in the actual injection molding process, the weld line is not an ideal straight line, but rather a curve. Therefore, the first weld line 60 cannot completely coincide with the reference plane 50. However, the above arrangement makes the distribution of the first weld line 60 more regular, so that at least a portion of the first weld line 60 coincides with the reference plane 50; alternatively, the first weld line 60 is arranged near the reference plane 50.

[0046] In the second embodiment, if Figures 2 to 5 The grid structure forms a plurality of communicating holes 20 , which are strip-shaped holes. The extending direction of the strip-shaped holes is parallel to the reference plane 50 , and the plurality of communicating holes 20 are spaced apart in a direction perpendicular to the extending direction thereof.

[0047] In the second embodiment, if Figures 2 to 5The gate molding area 40 is symmetrically arranged relative to the reference plane 50. In the extension direction of the strip hole, the gate molding area 40 and the second weld line assembly 80 are located on opposite sides of the strip hole. The second weld line assembly 80 includes a plurality of second weld lines 81, which are arranged in a one-to-one correspondence with the plurality of connecting holes 20. Each second weld line 81 extends from a corresponding connecting hole 20 to the edge of the appearance part body 10. The second weld line assembly 80 is symmetrically arranged relative to the reference plane 50. Each second weld line 81 is substantially parallel to the extension direction of the connecting hole 20, and the extension directions of the plurality of connecting holes 20 are parallel. Specifically, the second weld line assembly 80 appears on the appearance surface 11. The above arrangement ensures that the second weld line assembly 80 appears in the appropriate position and makes the distribution of the second weld line assembly 80 more regular, making the appearance part more beautiful.

[0048] In this embodiment, a single gate molding area 40 is provided on the non-exterior surface 12, and the length of the exterior component body 10 in any direction of its extension is less than or equal to 400 mm. This arrangement avoids appearance defects such as flow marks, weld marks, and gate marks that might otherwise occur when multiple injection molding melts interact with each other. Furthermore, when the length of the exterior component body 10 in any direction of its extension is less than or equal to 400 mm, a single gate molding area 40 is suitable, ensuring the injection molding quality of the exterior component and preventing appearance defects.

[0049] It should be noted that the length of the appearance part body 10 in any extension direction is less than or equal to 400 mm, which means that the appearance part body 10 extends in multiple directions, and in any direction of the multiple directions, the length of the appearance part body 10 is less than or equal to 400 mm.

[0050] In this embodiment, the exterior body 10 has an opposing top surface 13, a bottom surface 14, and sidewalls 15 extending circumferentially of the exterior body 10. Both the top surface 13 and the sidewalls 15 constitute the exterior surface 11, while the bottom surface 14 constitutes the non-exterior surface 12. The gate molding area 40 is disposed on the bottom surface 14 and extends to the junction of the bottom surface 14 and the sidewalls 15. This eliminates the gate molding area 40 from appearing on the exterior surface, eliminating the cutout created by removing the gate molding portion.

[0051] In this embodiment, the exterior body 10 has an opposing top surface 13 and bottom surface 14, and a sidewall 15 extending circumferentially of the exterior body 10. The top surface 13 serves as the exterior surface 11, while at least a portion of the sidewall 15 and the bottom surface 14 serve as non-exterior surfaces 12. A gate molding area 40 is disposed on the bottom surface 14 and extends to the junction of the bottom surface 14 and the sidewall 15. Alternatively, the gate molding area 40 may be disposed on the sidewall 15, or on both the sidewall 15 and the bottom surface 14. In this manner, the gate molding area 40 does not appear on the exterior surface, and the exterior surface does not have a cutout resulting from the removal of the gate molding portion.

[0052] In this embodiment, the grid structure includes a plurality of parallel bars, and a connecting hole 20 is provided between two adjacent bars; along the direction perpendicular to the reference plane 50, the grid structure has a first end and a second end that are relatively arranged; the thickness of the plurality of bars in the direction from the reference plane 50 to the first end of the grid structure gradually increases, and the thickness of the plurality of bars in the direction from the reference plane 50 to the second end of the grid structure gradually increases. Specifically, the thicker the material, the faster the injection melt flows, ensuring that the flow resistance of the injection melt near the reference plane 50 is greater than the flow resistance of the injection melt away from the reference plane 50, so that the melt can reach the opposite side of the gate molding area 40 at the same time. Among them, along the direction parallel to the reference plane 50 is Figure 3 y direction in .

[0053] It should be noted that the symmetrical arrangement of the grid structure relative to the reference plane 50 means that the multiple parallel bars and the multiple communication holes 20 are all symmetrically arranged relative to the reference plane 50. If the appearance part body 10 also includes other structures connected to the grid structure, they can be arranged symmetrically or asymmetrically relative to the reference plane 50.

[0054] In this embodiment, the length of the gate molding area 40 along its length direction is greater than or equal to 8 mm; and / or, the width of the gate molding area 40 along its width direction ranges from 0.6 mm to 2 mm. Specifically, the length direction of the gate molding area 40 is the width direction of the gate 30, that is, the direction perpendicular to the mold opening direction of the mold; the width direction of the gate molding area 40 is the thickness direction of the gate 30, that is, the mold opening direction of the mold. Such an arrangement can ensure that the injection melt flows at a low flow rate. Specifically, in this embodiment, the length direction of the gate molding area 40 is Figure 2 The width direction of the gate molding area 40 is Figure 3 y direction shown.

[0055] It should be noted that the value range between 0.6 mm and 2 mm includes the value of 0.6 mm and the value of 2 mm.

[0056] Specifically, the gate forming area 40 is rectangular or trapezoidal.

[0057] In this embodiment, the exterior surface 11 is provided with a brushed pattern, which extends parallel to the flow direction of the injection molded melt. If flow marks appear on the exterior surface, they will be oriented in the same direction as the flow direction. The parallelism of the brushed pattern with the melt flow direction obscures the flow marks, effectively concealing them.

[0058] It should be noted that brushed texture is formed on the surface of the appearance parts through surface brushing treatment, and surface brushing treatment is a surface treatment method that has a decorative effect.

[0059] In this embodiment, the appearance component is made of a spray-free material, which includes a base material and particles distributed in the base material; wherein the base material is a thermoplastic polymer material; and the particles are at least one of metal particles, pearlescent powder, and fibers.

[0060] Optionally, the metal particles are aluminum or copper.

[0061] Optionally, the fibers are nylon or natural fibers.

[0062] Specifically, the exterior components may be a water collection box cover, a base, etc., and may be applicable to desktop water purifiers, floor fans, etc.

[0063] In other embodiments, the exterior surface 11 has a first gate forming area. Because gate lines are generated in the first gate forming area, the exterior component uses a label, silk screen printing, laser engraving, or other means to cover or fade the first gate forming area. The first gate forming area and the gate forming area are created on the exterior component using the same implementation method.

[0064] In other embodiments, the exterior surface 11 has flow marks, and the flow marks on the exterior surface 11 are covered or faded by using decorative concave and convex marks, sunburst patterns, labels, silk screen printing, laser engraving, and the like.

[0065] In other embodiments, the exterior surface 11 has a weld line, and the weld line on the exterior surface 11 is covered or faded by using decorative embossed marks, sunburst patterns, labels, silk screen printing, laser engraving, and the like.

[0066] The present invention further provides a household appliance, comprising an appearance component, wherein an appearance surface 11 of the appearance component forms at least a portion of the appearance surface of the household appliance, wherein the appearance component is the appearance component in the above embodiment.

[0067] Specifically, the household appliance may be a desktop water purifier, a floor fan, etc.

[0068] The present invention further provides a mold, wherein the mold has a cavity for forming the appearance component in the above embodiment, and the mold further has a gate 30, which is connected to the cavity.

[0069] In this embodiment, the gate 30 is a fan-shaped gate. Such a setting can ensure that the injection melt flows at a low flow rate and is also easy to remove the gate molding part.

[0070] Specifically, the gate 30 has a first communication port at one end that communicates with the mold cavity. The first communication port corresponds to the gate molding area 40. The width of the gate 30 is greater than or equal to 8 mm, and the thickness of the gate 30 is within a range of 0.6 mm to 2 mm. The thickness of the gate 30 is the mold opening direction, and the width of the gate 30 is perpendicular to the mold opening direction. It should be noted that the range of 0.6 mm to 2 mm includes values ​​of 0.6 mm and 2 mm.

[0071] In this embodiment, the mold further includes a buffer runner 100 and a melt inlet 90. The first end of the buffer runner 100 is connected to the melt inlet 90. The buffer runner 100 is also connected to the end of the gate 30 away from the mold cavity, so that the injection melt flows through the melt inlet 90, the buffer runner 100, and the gate 30 in sequence before entering the mold cavity. The provision of the buffer runner 100 serves to buffer the injection melt and prevent appearance defects on the appearance surface 11.

[0072] Optionally, the buffer channel 100 is a curved channel, that is, the axis of the buffer channel 100 is a curve.

[0073] Optionally, the buffer channel 100 is an arc-shaped channel, that is, the axis of the buffer channel 100 is an arc.

[0074] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0075] The exterior component of the present invention is manufactured using spray-free technology. This component is an injection-molded product made of a spray-free material. The exterior component's exterior body 10 includes a lattice structure, and its non-exterior surface 12 has a gate molding area 40 corresponding to the mold's gate 30. By symmetrically positioning the lattice structure relative to a reference plane 50, which intersects with the lattice structure's second component 17, and positioning the gate molding area 40 on the lattice structure, this component achieves balanced flow and pressure inflow, allowing the injection molded melt to reach and fill the structures on both sides of the gate molding area 40 at approximately the same time. This facilitates symmetrical fountain flow, reduces appearance defects on the exterior surface 11, and addresses the issue of appearance defects easily occurring in spray-free injection molded parts. Furthermore, pressure balance helps control warping and deformation of the exterior component. Furthermore, positioning the gate molding area 40 on the second component 17 aligns weld lines, maximizing the appearance.

[0076] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0077] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0078] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An appearance component, characterized in that: The appearance component is a spray-free injection molded part, comprising an appearance component body (10), the appearance component body (10) comprising a grid structure, and the grid structure is symmetrically arranged relative to the reference plane (50); The appearance part body (10) has an appearance surface (11) and a non-appearance surface (12), and the non-appearance surface (12) has a gate molding area (40) for corresponding to the gate (30) of the mold; Wherein, along a direction perpendicular to the reference plane (50), the grid structure comprises a first component (16), a second component (17), and a third component (18) connected in sequence, and the first component (16), the second component (17), and the third component (18) have the same width in the direction perpendicular to the reference plane; wherein the gate molding area (40) is located on the second component (17); The grid structure forms a plurality of connecting holes (20), and the gate molding area (40) is symmetrically arranged relative to the reference plane (50); a first weld line (60) is provided between two adjacent connecting holes (20), and at least a portion of the first weld line (60) coincides with the reference plane (50), wherein the first weld line (60) appears on the appearance surface (11) to ensure that the first weld line (60) is approximately on the reference plane (50), and the distribution of the first weld line (60) is more regular, so that the appearance component is more beautiful.

2. The appearance component according to claim 1, characterized in that: The communicating holes (20) are strip-shaped holes, the extension direction of the strip-shaped holes is perpendicular to the reference plane (50), and a plurality of the communicating holes (20) are arranged at intervals along a direction perpendicular to the extension direction thereof.

3. The appearance component according to claim 2, characterized in that: The first weld line (60) is arranged close to the reference plane (50).

4. The appearance component according to claim 1, characterized in that: The communicating holes (20) are strip-shaped holes, the extension direction of the strip-shaped holes is parallel to the reference plane (50), and a plurality of the communicating holes (20) are arranged at intervals along a direction perpendicular to the extension direction thereof.

5. The appearance component according to claim 4, characterized in that: In the extension direction of the strip-shaped hole, the gate molding area (40) and the second weld line assembly (80) are located on opposite sides of the strip-shaped hole; The second welding line assembly (80) includes a plurality of second welding lines (81), the plurality of second welding lines (81) are arranged in a one-to-one correspondence with the plurality of communication holes (20), and each second welding line (81) extends from the corresponding communication hole (20) to the edge of the appearance part body (10); Wherein, the second welding line assembly (80) is symmetrically arranged relative to the reference plane (50).

6. The appearance component according to any one of claims 1 to 5, characterized in that: The non-appearance surface (12) is provided with a gate molding area (40), and the length of the appearance part body (10) in any extension direction thereof is less than or equal to 400 mm.

7. The appearance component according to any one of claims 1 to 5, characterized in that: The appearance part body (10) has a top surface (13), a bottom surface (14) and a side wall (15) extending in a circumferential direction of the appearance part body (10) and arranged opposite to each other; the top surface (13) and the side wall (15) are both the appearance surfaces (11), and the bottom surface (14) is the non-appearance surface (12); The gate molding area (40) is arranged on the bottom surface (14) and extends to the connection between the bottom surface (14) and the side wall (15).

8. The appearance component according to any one of claims 1 to 5, characterized in that: The appearance part body (10) has a top surface (13), a bottom surface (14) and a side wall (15) extending in a circumferential direction of the appearance part body (10) and arranged opposite to each other; the top surface (13) is the appearance surface (11), and at least a portion of the side wall (15) and the bottom surface (14) are both the non-appearance surfaces (12); The gate molding area (40) is arranged on the bottom surface (14) and extends to the connection between the bottom surface (14) and the side wall (15); or The gate molding area (40) is provided on the side wall (15); or The gate molding area (40) is arranged on the side wall (15) and the bottom surface (14).

9. The appearance component according to claim 4, characterized in that: The grid structure comprises a plurality of bars arranged in parallel, with the communicating hole (20) being provided between two adjacent bars; the grid structure has a first end and a second end arranged opposite to each other in a direction perpendicular to the reference plane (50); the thickness of the plurality of bars in a direction from the reference plane (50) to the first end of the grid structure gradually increases, and the thickness of the plurality of bars in a direction from the reference plane (50) to the second end of the grid structure gradually increases.

10. The appearance component according to any one of claims 1 to 5, characterized in that: The length of the gate molding area (40) along its longitudinal direction is greater than or equal to 8 mm; and / or, The width of the gate molding area (40) along its width direction ranges from 0.6 mm to 2 mm.

11. A household appliance comprising an appearance component, wherein an appearance surface (11) of the appearance component forms at least a portion of the appearance surface of the household appliance, characterized in that: The exterior component is the exterior component according to any one of claims 1 to 10.

12. A mold, characterized in that: The mold has a cavity for forming the appearance component according to any one of claims 1 to 10, and the mold further has a gate (30), and the gate (30) is connected to the cavity.

13. The mold according to claim 12, characterized in that The gate (30) is a fan-shaped gate.

14. The mold according to claim 12, characterized in that The mold further comprises a buffer runner (100) and a melt inlet (90), wherein a first end of the buffer runner (100) is connected to the melt inlet (90), and the buffer runner (100) is connected to an end of the gate (30) away from the cavity, so that the injection melt flows through the melt inlet (90), the buffer runner (100) and the gate (30) in sequence and then enters the cavity.

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