Appearance component, household appliance, mold and mold opening method

Abstract

The present invention provides an appearance component, a household appliance, a mold, and a mold opening method thereof. The appearance component is an injection-molded part formed by a mold comprising a fixed mold and a movable mold. The appearance component has a first surface and a second surface disposed opposite each other. The first surface is the appearance surface and is provided with a recessed structure comprising a groove and / or a through-hole extending from the first surface to the second surface. The recessed structure has a depth of H. When H is greater than or equal to 15 mm, the second surface is provided with a fixed protrusion formed by a molding portion provided on the movable mold. The fixed protrusion protrudes from the second surface and is used to restrict movement of the appearance component in the ejection direction during mold opening. The appearance component of the present invention solves the problem of appearance quality defects caused by thinning the wall thickness of appearance components in the prior art.

Description

Technical Field

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

[0002] Household electrical appliances are currently developing in the direction of "light, thin and small" at an increasingly rapid pace. Injection molded parts are widely used in household electrical appliances. The wall thickness of injection molded parts has shown a clear trend of thinning year by year, which has attracted great attention from the industry and is of great significance to product cost reduction and the "dual carbon" goals.

[0003] However, the wall thickness of the exterior parts of household appliances is generally 2.2mm to 2.5mm. Further thinning will face two difficulties:

[0004] Appearance quality defects, such as white lines, shrinkage, thickness marks, stress marks, warping and deformation, etc.

[0005] Molding quality defects, such as material shortage, air trapped by rubber encapsulation, etc. Summary of the Invention

[0006] The main purpose of the present invention is to provide an appearance component, a household appliance, a mold and a mold opening method thereof, so as to solve the problem of appearance quality defects caused by thinning the wall thickness of the appearance component in the prior art.

[0007] In order to achieve the above-mentioned purpose, according to a first aspect of the present invention, there is provided an appearance component, which is an injection-molded part formed by a mold, the mold comprising a fixed mold and a movable mold, the appearance component having a first surface and a second surface arranged opposite to each other, the first surface being an appearance surface, a recessed structure being provided on the first surface, the recessed structure comprising a groove and / or a through hole extending from the first surface to the second surface, and the depth of the recessed structure being H; when H ≥ 15 mm, a fixing protrusion formed by a molding portion provided on the movable mold is provided on the second surface, the fixing protrusion protruding from the second surface, and the fixing protrusion being used to limit the movement of the appearance component along the demolding direction when the mold is opened.

[0008] Furthermore, when H≤5 mm, the through hole includes a first hole wall formed by a fixed mold and a second hole wall formed by a movable mold, and the first hole wall and the second hole wall are arranged sequentially in the direction from the first surface to the second surface; the angle between the first hole wall and the axis of the through hole is a, and the angle between the second hole wall and the axis of the through hole is b; wherein, a≥b+3°.

[0009] Furthermore, the length of the first hole wall along the axial direction of the through hole is H, the length of the second hole wall along the axial direction of the through hole is H; wherein the axial direction of the through hole is the depth direction of the recessed structure.

[0010] Furthermore, when 5mm<H<15mm, the first projection of the groove bottom on the parting surface of the mold is located within the second projection of the groove opening on the parting surface of the mold, and the minimum distance c between the first projection and the second projection is greater than or equal to 1mm.

[0011] Furthermore, the average material thickness of the appearance component is less than or equal to 2.2 mm.

[0012] According to a second 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, and the appearance component is the appearance component described above.

[0013] According to a third aspect of the present invention, a mold is provided, comprising a fixed mold, a movable mold, and a molding portion, wherein the movable mold, the fixed mold, and the molding portion together form a cavity for molding the above-mentioned appearance component.

[0014] Furthermore, the forming portion is a slanted top, which is passed through the movable mold and is movably arranged relative to the movable mold.

[0015] Furthermore, the forming part is a slider, which is movably arranged on the movable mold; a slideway is provided on the slider, and a slide rod is provided on the fixed mold, and the slide rod is slidably arranged in the slideway, so that when the fixed mold moves, the slider is driven to move through the slide rod to separate the slider from the fixed protrusion of the appearance component.

[0016] Furthermore, the mold also includes a manifold plate, a sprue plate and an inserting pin, and the sprue plate is arranged between the manifold plate and the fixed mold; the inserting pin is connected to the manifold plate and the sprue plate respectively, and the inserting pin passes through the fixed mold and is inserted into the movable mold. The inserting pin is used to form the concave structure of the appearance component.

[0017] Furthermore, the mold further includes an ejection system, at least part of which is movably arranged to eject the appearance component on the movable mold to separate the appearance component from the movable mold.

[0018] According to a fourth aspect of the present invention, a mold opening method is provided, which is applicable to the above-mentioned mold. The mold opening method includes: separating the fixed mold and the movable mold of the mold; separating the molding part of the mold from the appearance component; and separating the appearance component from the movable mold.

[0019] Furthermore, before separating the fixed mold from the movable mold, the mold opening method also includes: making the manifold plate and the sprue plate of the mold move synchronously to separate the sprue plate from the fixed mold so as to shrink the pin of the mold.

[0020] Furthermore, the method for separating the fixed mold and the movable mold of the mold includes: controlling the manifold plate, the nozzle plate and the fixed mold to move synchronously, so that the fixed mold and the insert pin are separated from the movable mold respectively.

[0021] Furthermore, the method for separating the appearance component from the movable mold includes: at least a portion of the ejection system of the mold ejects the appearance component to separate the appearance component from the movable mold.

[0022] The technical solution of the present invention is an injection-molded exterior component having a first surface and a second surface disposed opposite each other. The first surface is the exterior surface and is provided with a recessed structure having a depth of H. When H is greater than or equal to 15 mm, the second surface is provided with a fixed protrusion formed by a molding portion provided on the movable mold. The fixed protrusion protrudes from the second surface and serves to restrict the movement of the exterior component in the ejection direction during mold opening. The provision of the fixed protrusion in this exterior component avoids the problem of the exterior surface striking the fixed mold during mold opening, which occurs when the recessed structure adheres to the fixed mold. This causes the hole and exterior surface to bend and deform during mold opening, leading to surface damage caused by the impact of the exterior surface with the fixed mold during mold opening. This prevents the formation of white streaks and solves the problem of exterior quality defects caused by thinning the wall thickness of the exterior component. 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 A schematic diagram showing an angle of an embodiment of an appearance component according to the present invention;

[0025] Figure 2 A schematic diagram showing another angle of an embodiment of an appearance component according to the present invention;

[0026] Figure 3 A cross-sectional view showing an embodiment of an appearance component according to the present invention;

[0027] Figure 4 Shows a front view of a fixed die and a movable die of a die according to the present invention;

[0028] Figure 5 Shows a cross-sectional view of a fixed mold and a movable mold of a mold according to the present invention;

[0029] Figure 6 Shown Figure 5 A local enlarged view of point A in FIG;

[0030] Figure 7 Shown Figure 5 A local enlarged view of point B in FIG;

[0031] Figure 8 A cross-sectional view showing one embodiment of a molding portion of a mold (closed mold) according to the present invention;

[0032] Figure 9 A cross-sectional view showing one embodiment of a molding portion of a mold (open mold) according to the present invention;

[0033] Figure 10 Shown Figure 9 A local enlarged view of point C in FIG;

[0034] Figure 11 A cross-sectional view showing another embodiment of a molding portion of a mold (closed mold) according to the present invention;

[0035] Figure 12 A cross-sectional view showing another embodiment of a molding portion of a mold (open mold) according to the present invention;

[0036] Figure 13 Shown Figure 12 A local enlarged view of point D in FIG;

[0037] Figure 14 A cross-sectional view of an embodiment of a mold according to the present invention when the mold is closed is shown;

[0038] Figure 15 It shows a cross-sectional view of the pin-inserting mold of the mold according to the present invention when the mold is reduced;

[0039] Figure 16 A cross-sectional view showing the separation of the fixed mold and the movable mold of the mold according to the present invention;

[0040] Figure 17 A cross-sectional view showing the separation of the movable mold and the exterior component of the mold according to the present invention.

[0041] The above drawings include the following reference numerals:

[0042] 1. Fixed mold; 2. Moving mold; 4. Molding part; 5. Manifold plate; 6. Gate plate; 7. Insert pin; 8. Ejection system; 9. Appearance components; 11. Slide rod; 31. First surface; 32. Second surface; 33. Groove; 34. Through hole; 341. First hole wall; 342. Second hole wall; 35. Fixing protrusion; 41. Slideway. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The present invention provides an appearance component, please refer to Figures 1 to 3 The appearance component is an injection molded part formed by injection molding of a mold. The mold includes a fixed mold 1 and a movable mold 2. The appearance component has a first surface 31 and a second surface 32 arranged opposite to each other. The first surface 31 is the appearance surface. A recessed structure is provided on the first surface 31. The recessed structure includes a groove 33 and / or a through hole 34 extending from the first surface 31 to the second surface 32. The depth of the recessed structure is H; when H ≥ 15 mm, a fixing protrusion 35 formed by a molding part 4 provided on the movable mold 2 is provided on the second surface 32. The fixing protrusion 35 protrudes from the second surface 32. The fixing protrusion 35 is used to limit the movement of the appearance component along the demolding direction when the mold is opened.

[0047] The appearance component of the present invention is an injection-molded part having a first surface 31 and a second surface 32 arranged opposite each other. First surface 31 is the appearance surface and is provided with a recessed structure having a depth H. When H ≥ 15 mm, second surface 32 is provided with a fixed protrusion 35 formed by a molding portion 4 provided on movable mold 2. Fixed protrusion 35 protrudes from second surface 32 and serves to restrict movement of the appearance component in the ejection direction during mold opening. By providing fixed protrusion 35, this appearance component avoids the problem of the appearance surface striking the fixed mold side during mold opening, which would result from the recessed structure adhering to the fixed mold side. This would cause the hole and the appearance surface to bend and deform during mold opening, leading to the appearance surface being damaged by the impact of the appearance surface on the fixed mold side at the moment of mold opening. This, in turn, avoids the formation of white streaks, thereby resolving the problem of appearance quality defects caused by thinning the wall thickness of the appearance component.

[0048] The fixing protrusion 35 is a part of the appearance component.

[0049] It should be noted that when the appearance components are applied to household appliances, the appearance surface is an integral part of the appearance of the household appliance, that is, the appearance surface is the surface exposed in the application environment and can be seen by the user; the non-appearance surface is located inside the household appliance, that is, the non-appearance surface is the surface hidden inside the household appliance and cannot be seen by the user.

[0050] It should be noted that the demoulding direction refers to the demoulding direction of the appearance parts during injection molding. Figure 5 The up and down directions in .

[0051] Specifically, the average thickness of the appearance component is less than or equal to 2.2 mm. Within this numerical range, it is necessary to avoid appearance quality defects caused by thinning the wall thickness of the appearance component.

[0052] Furthermore, the average thickness of the appearance component is less than or equal to 2 mm. Within this numerical range, it is even more necessary to avoid appearance quality defects caused by thinning the wall thickness of the appearance component.

[0053] Specifically, when H ≤ 5 mm, the through hole 34 includes a first hole wall 341 formed by the fixed mold 1 and a second hole wall 342 formed by the movable mold 2. The first hole wall 341 and the second hole wall 342 are arranged in sequence from the first surface 31 to the second surface 32. The angle between the first hole wall 341 and the axis of the through hole 34 is a, and the angle between the second hole wall 342 and the axis of the through hole 34 is b; where a ≥ b + 3°. This arrangement can avoid damage to the exterior surface during mold opening and avoid the generation of white lines. It should be noted that the restriction of a ≥ b + 3° applies to through holes with H ≤ 5 mm.

[0054] Specifically, when H≤5mm, the length of the first hole wall 341 along the axial direction of the through hole 34 is H, the length of the second hole wall 342 along the axial direction of the through hole 34 is H; wherein the axial direction of the through hole 34 is the depth direction of the recessed structure. Such a setting can avoid damaging the exterior surface during mold opening and avoid the generation of white lines. It should be noted that the length of the first hole wall 341 along the axial direction of the through hole 34 is H, the length of the second hole wall 342 along the axial direction of the through hole 34 is The H limit applies to through holes with H ≤ 5 mm.

[0055] Specifically, the through hole 34 is used for assembly requirements or functional requirements, and ribs are provided around at least a portion of the circumference of the through hole 34 to provide structural reinforcement for the through hole 34 .

[0056] Specifically, when 5mm < H < 15mm, the first projection of the bottom of groove 33 on the mold's parting surface lies within the second projection of the opening of groove 33 on the mold's parting surface, and the minimum distance c between the first and second projections is greater than or equal to 1mm. This arrangement prevents damage to the exterior surface during mold opening and prevents the formation of white streaks.

[0057] It should be noted that when 5mm<H<15mm, if the appearance component cannot meet c≥1mm, a fixing protrusion 35 formed by the forming part 4 provided on the movable mold 2 is provided on the second surface 32, and the fixing protrusion 35 is provided to protrude from the second surface 32. The fixing protrusion 35 is used to limit the movement of the appearance component along the demolding direction when the mold is opened.

[0058] Specifically, the groove wall of the groove is substantially tubular, and the groove bottom of the groove has an opening or no opening.

[0059] Optionally, the appearance component includes at least two recessed structures, and the at least two recessed structures include through holes 34 and / or grooves 33. The present invention also provides a household appliance, including an appearance component 9, wherein the appearance surface of the appearance component 9 forms at least a portion of the appearance surface of the household appliance, wherein the appearance component 9 is the appearance component in the above embodiment.

[0060] The present invention also provides a mold, please refer to Figures 4 to 13 , which includes a fixed mold 1, a movable mold 2, and a molding part 4. The movable mold 2, the fixed mold 1 and the molding part 4 together form a cavity for molding the appearance component in the above embodiment.

[0061] Specifically, the forming portion 4 is a slanted top, which is disposed in the movable mold 2 and is movable relative to the movable mold 2. In specific implementation, the slanted top is separated from the fixed protrusion by the movable slanted top. The slanted top is suitable for the case where the depth H of the recessed structure of the appearance component is greater than or equal to 15 mm.

[0062] Specifically, the forming portion 4 is a slider movably mounted on the movable mold 2. A slideway 41 is provided on the slider, and a slide rod 11 is provided on the fixed mold 1. The slide rod 11 is slidably mounted within the slideway 41. When the fixed mold 1 moves, the slide rod 11 drives the slider to move, thereby separating the slider from the fixed protrusion 35 of the appearance component 9. In practice, the slider is separated from the fixed protrusion by the movable slider. The provision of the slider is suitable for use in cases where the depth H of the recessed structure of the appearance component is greater than or equal to 15 mm.

[0063] Specifically, the slideway 41 extends along a first extending direction, and an angle between the first extending direction and the demoulding direction is greater than 0 degrees and less than 90 degrees.

[0064] Specifically, the mold also includes a manifold plate 5, a sprue plate 6 and an inserting pin 7. The sprue plate 6 is arranged between the manifold plate 5 and the fixed mold 1; the inserting pin 7 is respectively connected to the manifold plate 5 and the sprue plate 6. The inserting pin 7 passes through the fixed mold 1 and is inserted into the movable mold 2. The inserting pin 7 is used to form the concave structure of the appearance component 9.

[0065] Specifically, the mold further includes an ejection system 8 , at least part of which is movably arranged to eject the appearance component on the movable mold 2 , so that the appearance component 9 is separated from the movable mold 2 .

[0066] The present invention also provides a mold opening method, please refer to Figures 14 to 17 , wherein, the mold opening method applicable to the mold in the above embodiment includes:

[0067] Separate the fixed mold 1 and the movable mold 2 of the mold;

[0068] Separate the molding part 4 of the mold from the appearance component 9;

[0069] Separate the exterior components from the movable mold 2.

[0070] In practice, after separating the fixed mold 1 from the movable mold 2, the mold's molding section 4 is separated from the fixed protrusion of the exterior component 9; finally, the exterior component 9 is separated from the movable mold 2. The molding section 4 holds the fixed protrusion to prevent the exterior component from bending, deforming, and impacting the fixed mold, thereby preventing white streaks from forming on the exterior surface.

[0071] Specifically, before separating the fixed mold 1 from the movable mold 2, the mold opening method also includes: making the manifold plate 5 and the sprue plate 6 of the mold move synchronously to separate the sprue plate 6 from the fixed mold 1 so as to shrink the inlay pin 7 of the mold.

[0072] During specific implementation, the setting pin 7 is first retracted to prevent the local mold sticking at the concave structure.

[0073] Specifically, the method for separating the fixed mold 1 from the movable mold 2 of the mold includes: controlling the manifold plate 5, the nozzle plate 6 and the fixed mold 1 to move synchronously, so that the fixed mold 1 and the insert pin 7 are separated from the movable mold 2 respectively.

[0074] Specifically, the method for separating the appearance component from the movable mold 2 includes: at least a portion of the ejection system 8 of the mold ejects the appearance component 9 to separate the appearance component 9 from the movable mold 2 .

[0075] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0076] The appearance component of the present invention is an injection-molded part having a first surface 31 and a second surface 32 arranged opposite each other. First surface 31 is the appearance surface and is provided with a recessed structure having a depth H. When H ≥ 15 mm, second surface 32 is provided with a fixed protrusion 35 formed by a molding portion 4 provided on movable mold 2. Fixed protrusion 35 protrudes from second surface 32 and is used to restrict the movement of the appearance component in the ejection direction during mold opening. By providing fixed protrusion 35, the appearance component avoids the problem of the recessed structure adhering to the fixed mold side, causing the hole and the appearance surface to bend and deform during the opening of the movable and fixed molds. This problem causes the appearance surface to impact the fixed mold side at the moment of mold opening, resulting in dragging of the appearance surface. This problem also avoids the formation of white lines, thereby resolving the problem of appearance quality defects caused by thinning the wall thickness of the appearance component.

[0077] 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.

[0078] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "upper" 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 encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in a drawing is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both the "above" and "below" orientations. The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0079] 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, the appearance component is an injection molded part formed by a mold, the mold comprising a fixed mold (1) and a movable mold (2), characterized in that: The appearance component has a first surface (31) and a second surface (32) arranged opposite to each other, the first surface (31) being an appearance surface, a recessed structure being provided on the first surface (31), the recessed structure comprising a groove (33) and / or a through hole (34) extending from the first surface (31) to the second surface (32), and the depth of the recessed structure being H; When H ≥ 15 mm, a fixing protrusion (35) formed by a forming portion (4) provided on the movable mold (2) is provided on the second surface (32), the fixing protrusion (35) being provided protruding from the second surface (32), and the fixing protrusion (35) being used to limit the movement of the appearance component along the demolding direction when the mold is opened; When H≤5mm, the through hole (34) comprises a first hole wall (341) formed by the fixed die (1) and a second hole wall (342) formed by the movable die (2), and the first hole wall (341) and the second hole wall (342) are arranged in sequence in the direction from the first surface (31) to the second surface (32); the angle between the first hole wall (341) and the axis of the through hole (34) is a, and the angle between the second hole wall (342) and the axis of the through hole (34) is b; wherein a≥b+3°; When 5mm<H<15mm, the first projection of the bottom of the groove (33) on the parting surface of the mold is located within the second projection of the opening of the groove (33) on the parting surface of the mold, and the minimum distance c between the first projection and the second projection is greater than or equal to 1mm.

2. The appearance component according to claim 1, characterized in that: The length of the first hole wall (341) along the axial direction of the through hole (34) is H, the length of the second hole wall (342) along the axial direction of the through hole (34) is H; wherein the axial direction of the through hole (34) is the depth direction of the recessed structure.

3. The appearance component according to claim 1, characterized in that: The average material thickness of the appearance component is less than or equal to 2.2 mm.

4. A household appliance comprising an appearance component (9), wherein an appearance surface of the appearance component (9) forms at least a portion of the appearance surface of the household appliance, characterized in that: The appearance component (9) is the appearance component according to any one of claims 1 to 3.

5. A mold, characterized in that: The invention comprises a fixed mold (1), a movable mold (2), and a molding portion (4), wherein the movable mold (2), the fixed mold (1), and the molding portion (4) together form a cavity for molding the appearance component according to any one of claims 1 to 4.

6. The mold according to claim 5, characterized in that The forming portion (4) is a slanted top, which is inserted into the movable mold (2) and is movably arranged relative to the movable mold (2).

7. The mold according to claim 5, characterized in that The forming portion (4) is a slider, which is movably arranged on the movable mold (2); a slideway (41) is provided on the slider, and a slide rod (11) is provided on the fixed mold (1), and the slide rod (11) is slidably arranged in the slideway (41) so as to drive the slider to move through the slide rod (11) when the fixed mold (1) moves, so as to separate the slider from the fixed protrusion (35) of the appearance component (9).

8. The mold according to claim 5, characterized in that The mold further comprises a manifold plate (5), a nozzle plate (6) and an insert pin (7), wherein the nozzle plate (6) is arranged between the manifold plate (5) and the fixed mold (1); The inserting pin (7) is connected to the manifold plate (5) and the nozzle plate (6) respectively. The inserting pin (7) passes through the fixed mold (1) and is inserted into the movable mold (2). The inserting pin (7) is used to form the concave structure of the appearance component.

9. The mold according to claim 5, characterized in that The mold further comprises an ejection system (8), at least part of which is movably arranged to eject the appearance component on the movable mold (2) so as to separate the appearance component (9) from the movable mold (2).

10. A mold opening method, characterized in that: The mold according to any one of claims 5 to 9, wherein the mold opening method comprises: Separating the fixed mold (1) and the movable mold (2) of the mold; Separating the molding portion (4) of the mold from the appearance component (9); The appearance component (9) is separated from the movable mold (2).

11. The mold opening method according to claim 10, characterized in that: Before separating the fixed mold (1) and the movable mold (2) of the mold, the mold opening method further includes: The manifold plate (5) and the nozzle plate (6) of the mold are moved synchronously to separate the nozzle plate (6) from the fixed mold (1) so that the inlay pin (7) of the mold can be shrunk.

12. The mold opening method according to claim 11, characterized in that: The method for separating the fixed mold (1) and the movable mold (2) of the mold comprises: The manifold plate (5), the nozzle plate (6) and the fixed mold (1) are controlled to move synchronously, so that the fixed mold (1) and the insert pin (7) are separated from the movable mold (2) respectively.

13. The mold opening method according to claim 10, characterized in that: The method for separating the appearance component from the movable mold (2) comprises: At least a portion of the ejection system (8) of the mold ejects the appearance component, so that the appearance component (9) is separated from the movable mold (2).

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