Vacuum adsorption forming mold components and cover plates

Abstract

This application provides a vacuum adsorption molding die assembly and a cover plate. The vacuum adsorption molding die assembly includes an injection molding skeleton, which includes an adsorption area and a non-adsorption area; the cover plate is capable of covering the non-adsorption area during vacuum adsorption injection molding of the injection molding skeleton; wherein the covering surface provided by the cover plate is a wavy surface, which has a hollowed-out portion compared to a planar structure, thereby forming a periodically distributed wave shape extending along the covering surface.

Description

Technical Field

[0001] This application relates to a vacuum adsorption molding die assembly and a cover plate. Background Technology

[0002] During the vacuum adsorption process, a cover plate is needed to adsorb a layer of skin onto the injection molded skeleton. The cover plate needs to be used to block the parts that do not need to be adsorbed to prevent them from sticking to the skin. The areas covered by the cover plate are the positions of the injection molded skeleton, while the areas that do not need to be covered are generally the hollowed-out areas.

[0003] However, during this process, the cover plate is handled manually, and its heavy weight may cause inconvenience in operation.

[0004] In a comparative scheme to reduce the weight of a cover plate, the thickness of the flat cover plate is reduced, for example, from 4mm to 5mm to 2mm to 2.5mm, to reduce the weight of the cover plate by about 50%. The inventors found that this comparative scheme would result in insufficient structural strength of the cover plate during vacuum forming, leading to twisting and deformation.

[0005] Therefore, there is a need in the art for a vacuum adsorption molding die assembly and a cover plate to reduce the weight of the cover plate while ensuring that the cover plate has sufficient structural strength. Utility Model Content

[0006] The purpose of this application is to provide a vacuum adsorption molding die assembly.

[0007] The purpose of this application is to provide a cover plate.

[0008] According to a first aspect of this application, this application provides a vacuum adsorption molding die assembly, comprising: an injection molding skeleton, the injection molding skeleton including an adsorption region and a non-adsorption region; a cover plate, capable of covering the non-adsorption region when the injection molding skeleton is subjected to vacuum adsorption injection molding; wherein the covering surface provided by the cover plate is a wavy surface, the wavy surface having a hollow portion compared to a planar structure, thereby forming a periodically distributed wavy shape extending along the covering surface.

[0009] In the technical solution of this embodiment, by setting a wavy cover plate, the weight of the cover plate is reduced compared to a flat cover plate. On the basis of reducing the weight of the cover plate, the cover plate is guaranteed to have sufficient structural strength, avoiding the deformation of the cover plate during the vacuum adsorption molding process, and ensuring the smooth progress of the vacuum adsorption molding process.

[0010] In one or more embodiments of the vacuum adsorption molding die assembly, the interval between adjacent wavy peaks or troughs is 8 mm to 12 mm.

[0011] In one or more embodiments of the vacuum adsorption molding die assembly, the amplitude height of the wave crests or troughs is 2 mm to 3 mm; the thickness of the wave is 2 mm to 3 mm.

[0012] In one or more embodiments of the vacuum adsorption molding die assembly, the wavy crests or troughs have rounded chamfers with a radius of 2 mm to 3 mm, and the crests and troughs are connected by straight line segments.

[0013] In one or more embodiments of the vacuum adsorption molding die assembly, the cover plate includes a metal substrate and a surface film disposed on the surface of the metal substrate, the surface film being a self-lubricating material.

[0014] In one or more embodiments of the vacuum adsorption molding die assembly, the metal substrate material is an aluminum alloy material, and the self-lubricating material is polytetrafluoroethylene (PTFE).

[0015] In one or more embodiments of the vacuum adsorption molding die assembly, the injection-molded skeleton includes an interior panel injection-molded skeleton.

[0016] In one or more embodiments of the vacuum adsorption molding die assembly, the interior panel injection molding skeleton includes a door panel injection molding skeleton.

[0017] According to a second aspect of this application, this application provides a cover plate for use in a vacuum adsorption forming mold assembly as described in the first aspect, wherein the cover plate provides a corrugated surface having a hollow portion compared to a planar structure, thereby forming a periodically distributed corrugated shape extending along the surface.

[0018] In the technical solution of this embodiment, by setting a wavy cover plate, the weight of the cover plate is reduced compared to a flat cover plate, and on the basis of achieving weight reduction, the cover plate is guaranteed to have sufficient structural strength.

[0019] In one or more embodiments of the cover plate, the interval between adjacent crests or troughs of adjacent wavy shapes is 8 mm to 12 mm; the amplitude height of the crests or troughs of the wavy shapes is 2 mm to 3 mm; the thickness of the wavy shapes is 2 mm to 3 mm; and the cover plate is a manually handled component. Attached Figure Description

[0020] The above and other features, properties and advantages of this application will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0021] Figure 1 This is a schematic diagram of the cover plate of a vacuum adsorption molding die assembly according to an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the cover plate of a vacuum adsorption molding die assembly according to an embodiment of this application.

[0023] Figure 3 This is a schematic block diagram of a vacuum adsorption molding die assembly according to an embodiment of this application.

[0024] Figure Labels

[0025] 10-Vacuum Adsorption Molding Mold Components

[0026] 1-Injection Molded Skeleton

[0027] 11-Adsorption Region

[0028] 12-Non-adsorption region

[0029] 101-Insulation Molded Frame for Interior Panels

[0030] 1011-Door panel injection molded frame

[0031] 2-Cover plate

[0032] 20-Coverage

[0033] 201-Metal Substrate

[0034] 202-Surface Film

[0035] 21-Wave Surface

[0036] 211-Excavated Section

[0037] 212-Wave

[0038] 2120 - Rounded Chamfer

[0039] 2121-peak

[0040] 2122-Valley

[0041] 2123-Straight line segment

[0042] A-Amplitude Height

[0043] L-interval

[0044] T-thickness

[0045] R - radius. Detailed Implementation

[0046] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0048] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] In the description of the embodiments in this application, the technical terms "center," "longitudinal," "lateral," and "length" are used.

[0051] "Width", "Thickness", "Top", "Bottom", "Front", "Back", "Left", "Right", "Vertical", "Horizontal"

[0052] The orientations or positional relationships indicated by terms such as "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0053] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation", "connection", "joining", and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can also refer to mechanical connections. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0054] The vacuum adsorption molding mold assembly and cover plate disclosed in this application are not only applicable to the manufacture of interior panels, but also applicable to other parts that need to be manufactured by vacuum adsorption molding.

[0055] As described above, a cover plate is needed during the vacuum adsorption process. A layer of skin is adsorbed onto the injection-molded skeleton, and the cover plate is used to block areas that don't need adsorption to prevent the skin from sticking. The areas covered by the cover plate are the injection-molded skeleton areas, while the areas that don't need to be covered are generally the open areas. However, the cover plate is a manually handled component during this process, and its weight can cause inconvenience.

[0056] In a comparative scheme to reduce the weight of a cover plate, the thickness of the flat cover plate is reduced, for example, from 4mm to 5mm to 2mm to 2.5mm, to reduce the weight of the cover plate by about 50%. The inventors found that this comparative scheme would result in insufficient structural strength of the cover plate during vacuum forming, leading to twisting and deformation.

[0057] In view of the above problems, the inventors have invented a new cover plate and a vacuum adsorption forming mold assembly. By setting a wavy cover plate, the weight of the cover plate is reduced compared to a flat cover plate. Furthermore, while achieving weight reduction, the cover plate is guaranteed to have sufficient structural strength, avoiding deformation of the cover plate during the vacuum adsorption forming process and ensuring the smooth progress of the vacuum adsorption forming process.

[0058] refer to Figures 1 to 3 As shown, the vacuum adsorption molding mold assembly 10 includes: an injection molding skeleton 1 and a cover plate 2.

[0059] Injection molding skeleton 1, the injection molding skeleton 1 includes an adsorption area 11 and a non-adsorption area 12; cover plate 2, which can cover the non-adsorption area 12 when the injection molding skeleton 1 is subjected to vacuum adsorption injection molding.

[0060] refer to Figure 1 As shown, the covering surface 20 provided by the cover plate 2 is a wavy surface 21, which has a hollowed-out portion 211 compared to the planar structure, thereby forming a periodically distributed wave shape 212 extending along the covering surface.

[0061] The beneficial effects of the above embodiments are that the weight of the cover plate can be reduced without affecting its strength. Taking a flat aluminum alloy cover plate with a thickness of 4mm as an example, the embodiments can hollow out the flat aluminum alloy cover plate to form a wave shape. At this time, the total thickness is still 4mm, ensuring the strength of the cover plate and preventing deformation. However, in fact, due to the hollowing out and forming a wave shape, the weight of the cover plate is only equivalent to that of a flat aluminum alloy cover plate with a total thickness of 2mm. This means that the embodiments achieve a 50% weight reduction effect. Therefore, the weight of the cover plate is reduced without affecting its strength, which means that the cover plate is easy to handle as a manually transported part, making it easier for operators to perform vacuum adsorption operations, reducing operator fatigue, while ensuring that the cover plate has sufficient structural strength, avoiding deformation of the cover plate during vacuum adsorption molding, and ensuring the smooth progress of the vacuum adsorption molding process.

[0062] Continue to refer to Figure 1 As shown, in some embodiments, the structure of the wavy surface can be such that, in some embodiments, the interval L between adjacent peaks 2121 or troughs 2122 of adjacent wavy shapes 212 is 8mm to 12mm. That is, the periodic interval of the wavy shapes 212 is 8mm to 12mm, preferably 10mm. The advantage of this is that it facilitates CNC milling of the cover plate. The inventors have found that if the interval is less than 8mm, it is difficult to perform CNC milling, and if the interval exceeds 12mm, the cover plate 2 still faces the problem of insufficient strength. The tool for hollowing out the wavy shape can be, for example, a ball end mill, but is not limited to this.

[0063] Continue to refer to Figure 1 As shown, in some embodiments, the structure of the wave surface may further include an amplitude height A of 2mm to 3mm for the crests 2121 or troughs 2122 of the wave shape 212; and a thickness T of 2mm to 3mm for the wave shape 212. The beneficial effect of this is that the inventors have found that the above values ​​of amplitude height and thickness can better balance the requirements of lightweighting and strength, but are not limited thereto.

[0064] Continue to refer to Figure 1 As shown, in some embodiments, the structure of the wave surface may further include a rounded chamfer 2120 of the wave crest 2121 or trough 2122, the radius R of the rounded chamfer 2120 being 2mm to 3mm, and the crest 2121 and trough 2122 being connected by a straight line segment 2123. Here, the rounded chamfer and straight line segment are both for... Figure 1 The description of the cross-sectional shape shown, as those skilled in the art will understand, actually refers to a structure consisting of both arc surfaces and planes. This has the beneficial effect of further improving the lifespan of the cover plate, avoiding stress concentration, especially stress fatigue caused by the alternating loads of vacuuming and devastating during vacuum adsorption molding, thus extending the cover plate's lifespan.

[0065] Continue to refer to Figure 1 As shown, in some embodiments, the cover plate 2 may have a structure comprising a metal substrate 201 and a surface film 202 disposed on the surface of the metal substrate, wherein the surface film 202 is a self-lubricating material. This structure of metal substrate 201 and surface film 202 makes it easier to remove the material adsorbed on the cover plate 2 after processing, further facilitating vacuum adsorption molding by the operator.

[0066] The metal substrate 201 can be made of aluminum alloy, which has good strength and lightweight properties, but this is not a limitation. Self-lubricating materials can include high-temperature resistant graphite, polyimide, Teflon (PTFE), etc., and this is not a limitation; however, PTFE has higher strength.

[0067] like Figure 2 as well as Figure 3 As shown, the injection-molded frame 1 includes an interior panel injection-molded frame 101, such as an injection-molded frame for a dashboard, center console, door panel, or headliner, but may particularly include a door panel injection-molded frame 1011 to provide vacuum adsorption injection molding of the hollow structure.

[0068] As described above, this application also provides a cover plate 2 for the vacuum adsorption forming mold assembly 10 described above. The cover plate 2 provides a wavy surface 21, which has a hollowed-out portion 211 compared to a planar structure, thereby forming a periodically distributed wave shape 212 extending along the surface.

[0069] As described above, the structure of the cover plate 2 can be such that the interval between adjacent crests 2121 or troughs 2122 of adjacent wavy shapes 212 is 8mm to 12mm; the amplitude height of the crests 2121 or troughs 2122 of the wavy shape 212 is 2mm to 3mm; the thickness of the wavy shape 212 is 2mm to 3mm; and the cover plate 2 is a manually handled component.

[0070] In summary, the beneficial effects of the vacuum adsorption forming mold assembly and cover plate described in the above embodiments include, but are not limited to:

[0071] By setting a wavy cover plate, the weight of the cover plate is reduced compared to a flat cover plate. While achieving weight reduction, the cover plate is guaranteed to have sufficient structural strength, avoiding deformation during the vacuum adsorption molding process and ensuring the smooth progress of the vacuum adsorption molding process.

[0072] While specific embodiments of this application have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this application, but all such changes and modifications fall within the scope of protection of this application.

Claims

1. A vacuum suction forming mold assembly (10) characterized by, include: Injection molded skeleton (1), the injection molded skeleton (1) includes an adsorption region (11) and a non-adsorption region (12); The cover plate (2) is capable of covering the non-adsorption area (12) during vacuum adsorption injection molding of the injection frame (1); The cover plate (2) provides a wavy surface (21) for covering the surface. The wavy surface (21) has a hollowed-out portion (211) compared to the planar structure, thereby forming a periodically distributed wave shape (212) extending along the covering surface.

2. The vacuum suction forming mold assembly (10) according to claim 1, characterized in that The interval (L) between adjacent crests (2121) or troughs (2122) of adjacent wavy shapes (212) is 8 mm to 12 mm.

3. The vacuum adsorption forming mold assembly (10) as described in claim 2, characterized in that, The amplitude height (A) of the crest (2121) or trough (2122) of the wave (2122) is 2 mm to 3 mm; the thickness (T) of the wave (212) is 2 mm to 3 mm.

4. The vacuum adsorption forming mold assembly (10) as described in claim 2, characterized in that, The wave-shaped crest (2121) or trough (2122) has a rounded chamfer (2120) with a radius (R) of 2 mm to 3 mm, and the crest (2121) and trough (2122) are connected by a straight line segment (2123).

5. The vacuum adsorption forming mold assembly (10) as described in claim 1, characterized in that, The cover plate (2) includes a metal substrate (201) and a surface film (202) disposed on the surface of the metal substrate, wherein the surface film (202) is a self-lubricating material.

6. The vacuum adsorption forming mold assembly (10) as described in claim 5, characterized in that, The metal substrate (201) is made of aluminum alloy, and the self-lubricating material is polytetrafluoroethylene (PTFE).

7. The vacuum adsorption forming mold assembly (10) as described in claim 1, characterized in that, The injection-molded frame (1) includes an interior panel injection-molded frame (101).

8. The vacuum adsorption forming mold assembly (10) as described in claim 7, characterized in that, The interior panel injection molding frame (101) includes the door panel injection molding frame (1011).

9. A cover plate (2), characterized in that, For the vacuum adsorption forming mold assembly (10) as described in any one of claims 1-8, the cover plate (2) provides a covering surface (20) that is a wavy surface (21), which has a hollow portion (211) compared to a planar structure, thereby forming a periodically distributed wave shape (212) extending along the surface.

10. The cover plate (2) as claimed in claim 9, characterized in that, The interval between adjacent crests (2121) or troughs (2122) of adjacent wavy shapes (212) is 8 mm to 12 mm; the amplitude height of the crests (2121) or troughs (2122) of the wavy shape (212) is 2 mm to 3 mm; the thickness of the wavy shape (212) is 2 mm to 3 mm; the cover plate (2) is a manually handled component.

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