WO2020014936A1 - Sheet-shaped member, composite molded member and fabrication method for composite molded member - Google Patents

Sheet-shaped member, composite molded member and fabrication method for composite molded member Download PDF

Info

Publication number
WO2020014936A1
WO2020014936A1 PCT/CN2018/096356 CN2018096356W WO2020014936A1 WO 2020014936 A1 WO2020014936 A1 WO 2020014936A1 CN 2018096356 W CN2018096356 W CN 2018096356W WO 2020014936 A1 WO2020014936 A1 WO 2020014936A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
embodiments
surface
fiber
portion
Prior art date
Application number
PCT/CN2018/096356
Other languages
French (fr)
Chinese (zh)
Inventor
秦庆戊
陈俊琛
徐甲明
吴晓军
沙月华
Original Assignee
五行科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 五行科技股份有限公司 filed Critical 五行科技股份有限公司
Priority to PCT/CN2018/096356 priority Critical patent/WO2020014936A1/en
Publication of WO2020014936A1 publication Critical patent/WO2020014936A1/en

Links

Images

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0217Mechanical details of casings

Abstract

A sheet-shaped member, a composite molded member, and a fabrication method for a composite molded member thereof. The sheet-shaped member comprises a substrate (110) which has an upper surface (120) and a lower surface (130), and a side end surface (140) distributed around the edge of the substrate (110) located between the upper surface (120) and the lower surface (130). The side end surface (140) is provided thereon with a connection portion, the connection portion extends along at least a part of the edge of the substrate (110), the height of the connection portion is smaller than the thickness of the substrate (110), and at least a part of the connection portion protrudes outward from the substrate (110), or at least a part of the connection portion is recessed inward toward the substrate (110). The composite molded member (600) comprises: a sheet member (100) and a hemming member (400), wherein at least a part of the hemming member (400) wraps or fills the connection portion of the sheet member (100) and is connected to the sheet member (100). The sheet-shaped member (100) may improve the connection strength between a fiber-reinforced composite sheet and a thermoplastic resin member, and improve the fatigue resistance and reliability of the composite molded member (600).

Description

Plate-shaped member, composite forming member and manufacturing method of composite forming member Technical field

The present application relates to the manufacturing of composite molded members and composite molded members, and in particular, to a connection structure of a plate-like member and a thermoplastic resin member.

Background technique

Fiber-reinforced composite materials have excellent mechanical properties, and at the same time are very light in weight, have high specific strength and large specific stiffness, and are ideal materials for lightweighting of many products. It is widely used in 3C products such as mobile phones and notebook computers. Due to the complicated structure and shape of 3C products, the process of simply using fiber-reinforced composite materials to form their shells is cumbersome. Therefore, it has become the current development trend to use fiber-reinforced composite substrates and thermoplastic resin components to form 3C product shells .

Summary of the invention

Embodiments of the present application provide a plate-like member, a composite molded member, and a method for manufacturing the composite molded member. In order to improve the connection strength between the fiber-reinforced composite sheet and the thermoplastic resin member, the fatigue strength and reliability of the composite molded member are improved.

A plate-shaped member includes: a substrate having an upper surface and a lower surface, and a side end surface distributed around the edge of the substrate between the upper surface and the lower surface; the side end surface has a connection portion, and The connecting portion extends along at least a portion of an edge of the substrate, and a height of the connecting portion is less than a thickness of the substrate; wherein the thickness of the substrate is a distance between the upper surface and the lower surface; the The height of the connection portion is a distance between a vertex and a bottom point of the connection portion in a direction perpendicular to the substrate; and at least a portion of the connection portion projects outward from the substrate, or At least a portion is recessed into the substrate.

In some embodiments, at least a part of the connecting portion is a protrusion, and the protrusion is a protrusion extending in a direction parallel to the substrate and extending to the outside of the substrate; the height of the protrusion is 10% -90% of the thickness of the substrate.

In some embodiments, the protrusion has a first outer surface extending in a direction parallel to the substrate, and a second outer surface opposite to the first outer surface; the first An outer surface and / or the second outer surface is a flat surface; or, the first outer surface and / or the second outer surface of the protrusion is provided with a depression; or, the The protruding portion has a hole penetrating the first outer surface and the second outer surface.

In some embodiments, the protrusion is a continuous protrusion extending along an edge of the substrate; or, the protrusion is a plurality of protrusions extending along the edge of the substrate and separated from each other.

In some embodiments, the edge contour of the protrusion includes several straight lines; or the edge contour of the protrusion is an arbitrary curve.

In some embodiments, the substrate is a fiber-reinforced sandwich structure plate; the substrate includes a core material and at least one fiber-reinforced surface layer.

In some embodiments, the protrusion includes at least a portion of the core material and a portion of the fiber-reinforced skin layer.

In some embodiments, the protrusion is at least a part of the fiber-reinforced skin layer.

In some embodiments, the protrusion is at least a part of the core material.

In some examples, the tensile strength of the core material is 10 MPa-600 MPa; the Young's modulus of the core material is 0.2 GPa-50 GPa; and the density of the core material is 0.1 g / cm 3 -3 g / cm 3 .

In some embodiments, the tensile strength of the core material is 30 MPa-200 MPa; the Young's modulus of the core material is 2 GPa-18 GPa; and the density of the core material is 0.2 g / cm 3 -1 g / cm 3 .

In some embodiments, the connection portion has at least one recessed portion; the recessed portion is a groove extending into the substrate and having an opening only on the side end surface.

In some embodiments, the height of the recessed portion is 10% -70% of the thickness of the substrate; wherein the thickness of the substrate is the distance between the upper surface and the lower surface; the recess The height of the recessed portion is an opening size of the recessed portion in a direction perpendicular to the substrate.

In some embodiments, the depth of the concave portion is 0.1-10 times the thickness of the substrate; wherein the thickness of the substrate is the distance between the upper surface and the lower surface; the concave portion The depth of is the dimension in which the recessed portion extends inwardly of the substrate in a direction parallel to the substrate.

In some embodiments, the recessed portion includes the opening and a bottom surface opposite to the opening, and a first inner surface and a second inner surface opposite to the first inner surface; wherein the opening is along the At least a portion of an edge of the substrate extends; the first inner surface is in contact with the opening and the bottom surface; and the second inner surface is in contact with the opening and the bottom surface.

In some embodiments, the first inner surface and a plane parallel to the substrate have a first included angle; the second inner surface and the plane parallel to the substrate have a second included angle; the first included angle or the first The angle between the two angles is 0 ° -45 °.

In some embodiments, a distance between the first inner surface and the second inner surface at the bottom surface is less than a distance between the two at the opening.

In some embodiments, the longitudinal section of the recessed portion is an arbitrary shape.

In some embodiments, the recessed portion is a continuous groove extending along the edge of the substrate; or, the recessed portion is a plurality of grooves separated from each other extending along the edge of the substrate.

In some embodiments, the substrate edge profile includes several straight lines; or the substrate edge profile is an arbitrary curve; or the substrate edge profile has an arbitrary shape and runs through the upper surface and the lower surface Gap.

In some embodiments, the substrate is a fiber-reinforced composite sheet.

In some embodiments, the substrate is a fiber-reinforced resin sheet.

In some embodiments, the substrate is a fiber-reinforced sandwich structure plate; the substrate includes a core material and at least one fiber-reinforced surface layer.

In some embodiments, the thickness of the substrate is 0.1 mm-10 mm.

One embodiment of the present application provides a composite molding member, including: the sheet member according to any one of the foregoing; and a hemming member, at least a part of the hemming member enters a connection portion of the sheet member and the Sheet member connection.

In some embodiments, the material of the hemming member is at least one of the following materials: a thermoplastic material, a thermosetting material, a rubber material, a metal material, a ceramic material, or a glass material.

One embodiment of the present application is to provide a method for manufacturing a composite molded component, including: preparing a substrate; processing a connecting portion at a side end surface of the substrate; a height of the connecting portion is less than a thickness of the substrate; The thickness of the substrate is the distance between the upper surface and the lower surface; the height of the connection portion is the distance between the vertex and the bottom point of the connection portion in a direction perpendicular to the substrate; At least a portion of the connecting portion is protruded outward from the substrate, or at least a portion of the connecting portion is recessed into the substrate; wrapping or filling the connecting portion with an edging material, and at least enclosing the substrate. The side end surface forms a hemming member.

BRIEF DESCRIPTION OF THE DRAWINGS

This application will be further explained by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not restrictive. In these embodiments, the same numbers represent the same structures, where:

FIG. 1A is a schematic structural diagram of a plate-like member according to some embodiments of the present application; FIG.

FIG. 1B is a schematic structural diagram of another plate-shaped member according to some embodiments of the present application; FIG.

1C is a schematic structural diagram of another plate-shaped member according to some embodiments of the present application;

FIG. 1D is a schematic structural diagram of another plate-shaped member according to some embodiments of the present application; FIG.

1E is a schematic structural diagram of another plate-like member according to some embodiments of the present application;

FIG. 1F is a schematic structural diagram of another plate-shaped member according to some embodiments of the present application; FIG.

1G is a schematic structural diagram of another plate-shaped member according to some embodiments of the present application;

2A is a schematic structural diagram of a protruding portion according to some embodiments of the present application;

2B is a schematic structural diagram of another protruding portion according to some embodiments of the present application;

3A is a schematic structural diagram of a longitudinal section of a plate-shaped member according to some embodiments of the present application;

3B is a schematic structural diagram of a recessed portion according to some embodiments of the present application;

4A is an exemplary schematic structural diagram of a substrate according to some embodiments of the present application;

4B is an exemplary schematic structural diagram of another substrate according to some embodiments of the present application;

5 is a schematic structural diagram of another substrate according to some embodiments of the present application;

6A is a schematic structural diagram of a composite molded component according to some embodiments of the present application;

6B is a schematic structural diagram of another composite molded component according to some embodiments of the present application;

6C is a schematic structural diagram of another composite molded component according to some embodiments of the present application;

6D is a schematic structural diagram of another composite molding component according to some embodiments of the present application;

6E is a schematic structural diagram of another composite molded component according to some embodiments of the present application;

6F is a schematic structural diagram of another composite molded component according to some embodiments of the present application;

6G is a schematic structural diagram of another composite molded component according to some embodiments of the present application;

7 is an exemplary flowchart of a method for manufacturing a composite molded component according to some embodiments of the present application;

8 is another exemplary flowchart of a method for manufacturing a composite molded component according to some embodiments of the present application;

FIG. 9 is another exemplary flowchart of a method for manufacturing a composite molded component according to some embodiments of the present application.

detailed description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are just some examples or embodiments of the present application. For those of ordinary skill in the art, the present application can also be applied to these drawings without creative efforts. Other similar scenarios. Unless obvious from a locale or otherwise stated, the same reference numerals in the figures represent the same structure or operation.

As shown in this application and the claims, the words "a", "an", "an" and / or "the" do not specifically refer to the singular, but may include the plural unless the context clearly indicates an exception. In general, the terms "including" and "comprising" are only meant to include clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. The term "based on" is "based at least in part on." The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment". Related definitions of other terms will be given in the description below.

The embodiments of the present application mainly relate to a plate member, a composite molding member, and a method for manufacturing a composite molding member. In some embodiments, the composite molding member is composed of a sheet member and a hemming member. The plate member and the edging member can be joined. In some embodiments, the sheet member and the hemming member can be tightly connected by any combination of one or more of inlaying, adhesive bonding, or injection molding. In some embodiments, the composite molding member can be applied to a mobile phone, a personal computer, a portable video playback device, an audio playback device, a PDA (handheld computer), a game console, a camera, a video camera, a telephone, a fax machine, a home appliance, On the shell of electronic appliances such as smart terminals. And housings or interiors of vehicles, aircraft, etc. In some embodiments, the plate member may be any one or more of metal-based composite materials, ceramic-based composite materials, resin-based composite materials, fiber composite materials, sandwich composite materials, hybrid composite materials, or fine-grained composite materials. combination. In some embodiments, the sheet member may be a fiber-reinforced composite sheet. In some embodiments, the hemming member may be any one or a combination of one or more of a metal material, a ceramic material, a glass material, a rubber, a thermoplastic resin material, a thermosetting resin material, and the like. In some embodiments, the hemming member may be a thermoplastic resin material.

FIG. 1 is a schematic structural diagram of a plate member according to some embodiments of the present application. Referring to FIG. 1, the plate member 100 includes a substrate 110 and a connection portion. In some embodiments, the substrate 110 includes an upper surface 120, a lower surface 130, and a side end surface 140. As shown in FIG. 1, the side end surface 140 may be located between the upper surface 120 and the lower surface 130 and distributed around the edge of the substrate 110. In some embodiments, the connection portion may be provided at a position where connection with other components is required. In some embodiments, the connection portion may be disposed on the side end surface 140. In some embodiments, the connecting portion may be disposed at any position of the side end surface 140. In some embodiments, the connection portion may be disposed in a middle portion of the side end surface 140. In some embodiments, the connection portion may be disposed in the middle of the side end surface 140. In some embodiments, the connection portion may be disposed at the side end surface 140 near the upper surface 120. In some embodiments, the connection portion may be disposed at the side end surface 140 near the lower surface 130. In some embodiments, the connecting portion extends along at least a portion of an edge of the substrate 110. In some embodiments, the height of the connecting portion is smaller than the thickness of the substrate, wherein the thickness of the substrate is the distance between the upper surface and the lower surface, and the height of the connecting portion is the height of the connecting portion in a direction perpendicular to the substrate. The distance between the vertex and the bottom point. And at least a part of the connecting portion may protrude outward from the substrate 110. In some embodiments, at least a portion of the connection portion may be recessed into the substrate 110. In some embodiments, the connecting portion may be a staggered arrangement of protrusions and depressions. The connection portion in the present application may be a protrusion to the outside of the substrate 110 or a depression into the substrate 110 to connect the plate-like member 100 with other members.

As shown in FIG. 1, at least a part of the connecting portion is a protruding portion 200, and the protruding portion 210 is a protrusion extending in a direction parallel to the substrate and extending to the outside of the substrate 110. Referring to FIG. 1, a direction extending along the upper surface 120 or the lower surface 130 is a direction parallel to the substrate, and a direction perpendicular to the upper surface 120 or the lower surface 130 is a direction perpendicular to the substrate. In some embodiments, all of the connecting portions are the protruding portions 200. In some embodiments, the protrusion 200 may be disposed in the middle of the side end surface 140. In some embodiments, the protrusion 200 may be disposed in the middle of the side end surface 140. In some embodiments, the protrusion 200 may be disposed at the side end surface 140 near the upper surface 120. In some embodiments, the protrusion 200 may be disposed at the side end surface 140 near the lower surface 130. In some embodiments, the protrusion 200 is a protrusion extending continuously from the edge of the substrate. In some embodiments, the protrusion 200 is a plurality of protrusions extending along the edge of the substrate and separated from each other. In some embodiments, a plurality of protrusions 200 may be distributed on the side end surface 140 in multiple rows, each row having at least one protrusion 200, and the protrusions 200 of each row may be distributed in columns in a vertical direction or staggered. distributed. In some embodiments, the edge contour of the protrusion 200 may be several straight lines (see FIG. 1). In some embodiments, the edge contour of the protrusion 200 may be an arbitrary curve (see FIG. 2). In some embodiments, the edge contour of the protruding portion 200 may be a curve in which the unevenness is staggered. In some embodiments, the edge contour of the protrusion 200 may be a zigzag curve. In some embodiments, the edge contour of the protrusion may be a horizontally arranged I-shaped curve (see FIG. 2B).

As shown in FIG. 1, in some embodiments, the protruding portion 200 has a first outer surface 210 extending in a direction parallel to the substrate, and a second outer surface 220 opposite to the first outer surface 210. . In some embodiments, the first outer surface 210 and / or the second outer surface 220 of the protrusion 200 are flat surfaces. In some embodiments, a depression is provided on the first outer surface 210 and / or the second outer surface 220 of the protrusion 200. In some embodiments, the depression may be a pit or groove that does not penetrate the protrusion 200 in a direction perpendicular to the substrate. In some embodiments, several depressions may be irregularly scattered on the first outer surface or the second outer surface. In some embodiments, several depressions are regularly arranged in rows and columns on the first outer surface or the second outer surface. In some embodiments, the dimensions of several recesses may be inconsistent with each other. In some embodiments, the dimensions of several recesses are all consistent. In some embodiments, the protrusion 200 has a hole passing through the first outer surface 210 and the second outer surface 220. In some embodiments, the holes can be of any shape. In some embodiments, several holes may be irregularly scattered on the protrusions 200. In some embodiments, several holes may be regularly arranged in rows and columns within the protrusion 200. In some embodiments, the sizes of several holes may be inconsistent with each other. In some embodiments, the sizes of the holes are all the same. In some embodiments, the protrusion 200 may have a plurality of depressions and a plurality of holes staggered.

In some embodiments, the height D2 of the protruding portion may be 10% to 90% of the thickness D1 of the substrate. As shown in FIG. 1, the thickness D1 of the substrate is the distance between the upper surface 120 and the lower surface 130, and the height D2 of the protrusion is the distance between the first outer surface 210 and the second outer surface 220. In some embodiments, the thickness of the substrate 110 may be 0.1 mm-10 mm. In some embodiments, the thickness of the substrate 110 may be 0.2 mm-9 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-8 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-6 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-5 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-4 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-3 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-2.5 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-2 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm to 1.75 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-1.5 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-1.25 mm. In some embodiments, the thickness of the substrate 110 may be 0.3 mm-1 mm. In some embodiments, the height D2 of the protruding portion may be 10% to 90% of the thickness D1 of the substrate. In some embodiments, the height D2 of the protruding portion may be 10% to 80% of the thickness D1 of the substrate. In some embodiments, the height D2 of the protruding portion may be 10% to 70% of the thickness D1 of the substrate. In some embodiments, the height D2 of the protruding portion may be 10% to 60% of the thickness D1 of the substrate. In some embodiments, the height D2 of the protruding portion may be 10% -50% of the thickness D1 of the substrate. In some embodiments, the height D2 of the protruding portion may be 10% -40% of the thickness D1 of the substrate. In some embodiments, the height D2 of the protruding portion may be 10% -30% of the thickness D1 of the substrate. In some embodiments, the height D2 of the protruding portion may be 10% -20% of the thickness D1 of the substrate. More specifically, for example, the height D2 of the protruding portion may be 25%, 28%, 30%, 33%, 42%, 50%, 68%, 82%, etc. of the thickness D1 of the substrate.

In some embodiments, the width H2 of the protruding portion may be a size that the protruding portion 200 extends toward the outside of the substrate in a direction parallel to the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-10 times the thickness D1 of the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-8 times the thickness D1 of the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-6 times the thickness D1 of the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-5 times the thickness D1 of the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-4 times the thickness D1 of the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-2 times the thickness D1 of the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-0.8 times the thickness D1 of the substrate. In some embodiments, the width H2 of the protruding portion may be 0.1-0.5 times the thickness D1 of the substrate.

In some embodiments, the substrate 110 is a fiber-reinforced sandwich structure plate, and the substrate 110 may include a core material and at least one fiber-reinforced surface layer. As shown in FIG. 1B, in some embodiments, the substrate 110 may include a core material 111, an upper fiber-reinforced surface layer 112, and a lower fiber-reinforced surface layer 113. In some embodiments, the protrusion 200 may be a portion of the substrate 110 that protrudes from an edge of the substrate 110. In some embodiments, the protrusion 200 may include at least a portion of a core material and a portion of a fiber-reinforced skin layer. For example, referring to FIG. 1B, the protrusion 200 may include a part of the upper fiber-reinforced surface layer 112, the core material 111, and the lower fiber-reinforced surface layer 113. The protrusion 200 may include a part of the upper fiber-reinforced surface layer 112, the core material 111, and the lower fiber-reinforced surface layer 113. Referring to FIG. 1C, the protrusion 200 may include at least a part of the core material 111 and the lower fiber-reinforced surface layer 113. Referring to FIG. 1D, the protrusion 200 may include a part of the core material 111 and at least a part of the lower fiber-reinforced surface layer 113. Referring to FIGS. 1E and 1F, the protruding portion 200 may include the lower fiber-reinforced surface layer 113 or a part of the lower fiber-reinforced surface layer 113. In some embodiments, the protrusion 200 may be obtained by milling a part of the substrate 110. In some embodiments, a plurality of depressions or holes penetrating the protrusion 200 may be further processed on the protrusion 200.

Referring to FIG. 1G, in some embodiments, the protrusion 200 is at least a part of a core material. In some embodiments, the protrusion 200 may be a portion of the core material exposed on the edge of the substrate 110. In some embodiments, the protruding portion 200 may be obtained by removing the upper fiber-reinforced surface layer and the lower fiber surface layer near the edge of the substrate 110. In some embodiments, several recesses or holes may be machined on the exposed core material. In some embodiments, the protrusion 200 is further processed on the exposed core material. In some embodiments, the protrusion 200 is a protrusion extending along the edge of the substrate 110 and located in the middle of the core material. In some embodiments, the protrusion 200 is a protrusion extending along the edge of the substrate 110 and located on the side of the core material near the upper surface. In some embodiments, the protrusion 200 is a protrusion extending along the edge of the substrate 110 and located on the side of the core material near the lower surface.

In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa to 600 MPa to increase the strength of the protruding portion, thereby enhancing the strength of the connecting portion. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa-550 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa-500 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa-450 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa to 400 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa-350 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa to 300 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa-250 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 10 MPa to 200 MPa. In some embodiments, the core material may be selected from materials having a tensile strength of 20 MPa-200 MPa. In some embodiments, the core material may be selected from materials having a tensile strength of 30 MPa-200 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 30 MPa to 180 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 30 MPa to 150 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 40 MPa to 150 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 50 MPa to 150 MPa. In some embodiments, the core material may be selected from materials having a tensile strength of 60 MPa-150 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 70 MPa-150 MPa. In some embodiments, the core material can be selected from materials with a tensile strength of 80 MPa-150 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 90 MPa to 150 MPa. In some embodiments, the core material may be selected from a material having a tensile strength of 100 MPa to 150 MPa.

In some embodiments, the core material may be selected from a material having a Young's modulus of 0.2 GPa-50 GPa to increase the stiffness of the protruding portion, thereby enhancing the stiffness of the connecting portion. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2 GPa-45 GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2 GPa-40 GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2 GPa-35 GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2 GPa-30 GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2 GPa-25 GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2 GPa-22 GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2 GPa-20 GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.2GPa-18GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 0.5GPa-18GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 1GPa-18GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 1.5GPa-18GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-18GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-16GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-15GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-14GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-13GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-12GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-11GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 2GPa-10GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 3GPa-10GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 4GPa-10GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 5GPa-10GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 6GPa-10GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 7GPa-10GPa. In some embodiments, the core material may be selected from materials having a Young's modulus of 8GPa-10GPa.

In some embodiments, the density of the core material may be 0.1 g / cm 3 to 3 g / cm 3 . Thereby, the strength of the connecting portion is enhanced. In some embodiments, the density of the core material may be 0.1 g / cm 3 to 2.5 g / cm 3 . In some embodiments, the density of the core material may be from 0.1 g / cm 3 to 2 g / cm 3 . In some embodiments, the density of the core material may be 0.1 g / cm 3 -1.5 g / cm 3 . In some embodiments, the density of the core material may be 0.1 g / cm 3 to 1 g / cm 3 . In some embodiments, the density of the core material may be 0.2 g / cm 3 to 1 g / cm 3 . In some embodiments, the density of the core material may be 0.2 g / cm 3 -0.9 g / cm 3 . In some embodiments, the density of the core material may be 0.2 g / cm 3 -0.8 g / cm 3 . In some embodiments, the density of the core material may be 0.2 g / cm 3 -0.7 g / cm 3 . In some embodiments, the density of the core material may be 0.2 g / cm 3 -0.6 g / cm 3 . In some embodiments, the density of the core material may be 0.2 g / cm 3 -0.5 g / cm 3 . In some embodiments, the density of the core material may be 0.3 g / cm 3 -0.5 g / cm 3 . In some embodiments, the density of the core material may be 0.3 g / cm 3 -0.4 g / cm 3 .

FIG. 3A is a schematic structural view of a longitudinal section of a plate member according to some embodiments of the present application. As shown in FIG. 3A, the connecting portion has at least one concave portion 300. In some embodiments, the recessed portion 300 may be provided at a position where connection with other members is required. The recess 300 may be disposed on the side end surface 140 in some embodiments. The recessed portion 300 is a groove extending into the substrate 110 and having an opening 310 only on the side end surface 140. That is, the recessed portion 300 in the present application does not penetrate the upper surface 120 and / or the lower surface 130 in a vertical direction, but extends along a direction parallel to the substrate (see FIG. 1) as the side end surface 140 extends. . In some embodiments, the recessed portion 300 may be disposed at any position of the side end surface 140. In some embodiments, the recessed portion 300 may be disposed in a middle portion of the side end surface 140. In some embodiments, the recessed portion 300 may be disposed in the middle of the side end surface 140. In some embodiments, the recessed portion 300 may be disposed at the side end surface 140 near the upper surface 120. In some embodiments, the recessed portion 300 may be disposed at the side end surface 140 near the lower surface 130. In some embodiments, the recess 300 is a groove extending continuously from the edge of the substrate. In some embodiments, the recessed portion 300 is a plurality of grooves separated from each other extending along the edge of the substrate. In some embodiments, a plurality of recessed portions 300 may be distributed on the side end surface 140 in multiple rows, each row having at least one recessed portion 300, and the recessed portions 300 of each row may be distributed in columns or staggered in the vertical direction. In some embodiments, the concave portion 300 may be spaced from the convex portion 200 to improve the connection strength.

The recessed portion 300 in the present application does not penetrate the upper surface 120 and / or the lower surface 130 in the vertical direction. While enhancing the connection strength between the plate member 100 and other members, it does not affect the vertical direction of the substrate 110. The strength, and the bending resistance of the connection part in the vertical direction can improve the overall fatigue resistance and reliability of the composite molded component.

In some embodiments, the height D3 of the recessed portion is 10% -70% of the thickness D1 of the substrate. As shown in FIG. 3A, the thickness D1 of the substrate is the distance between the upper surface 120 and the lower surface 130, and the height D3 of the recessed portion is the opening size of the recessed portion 300 in the direction perpendicular to the substrate 110. In some embodiments, the height D3 of the recessed portion may be 10% -60% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion may be 10% -50% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion may be 10% -40% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion may be 10% -30% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion may be 10% -20% of the thickness D1 of the substrate.

In some embodiments, the depth H3 of the recessed portion may be a size in which the recessed portion 300 extends into the substrate in a direction parallel to the substrate. In some embodiments, the depth H3 of the recessed portion may be 0.1-10 times the substrate thickness D1. In some embodiments, the depth H3 of the recessed portion may be 0.1-8 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion may be 0.1-6 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion may be 0.1-5 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion may be 0.1-4 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion may be 0.1-2 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion may be 0.1-0.8 times the substrate thickness D1. In some embodiments, the depth H3 of the recessed portion may be 0.1-0.5 times the substrate thickness D1.

In some embodiments, the recessed portion 300 may be a groove having an arbitrary shape in longitudinal section. The longitudinal section may be a plane perpendicular to the substrate 110 and perpendicular to the side end surface 140 of the recessed portion 300. In some embodiments, the recessed portion 300 may be a groove that is a part of a circular shape in longitudinal section. In some embodiments, the recess 300 may be a groove having a semi-circular longitudinal section. In some embodiments, the recessed portion 300 may be a groove having a polygonal longitudinal section. In some embodiments, the recessed portion 300 may be a groove having a quadrangular longitudinal section. In some embodiments, the recessed portion 300 may be a groove having a rectangular longitudinal section. In some embodiments, the recess 300 may be a groove having a trapezoidal shape in longitudinal section.

FIG. 3B is a structural schematic diagram of a longitudinal section of an exemplary recessed portion in some embodiments of the present application. As shown in FIG. 3B, the recessed portion 300 includes an opening 310, a bottom surface 320 opposite to the opening, a first inner surface 330, and a second inner surface 340 opposite to the first inner surface 330. In some embodiments, the opening 310 is located on the connection-side end surface 140. In some embodiments, the first inner surface 330 is in contact with the opening 310 and the bottom surface 320. In some embodiments, the second inner surface 340 is in contact with the opening 310 and the bottom surface 320. In some embodiments, the first inner surface 330 is close to the upper surface 120 and the second inner surface 340 is close to the lower surface 130. In some embodiments, the distance between the first inner surface 330 and the second inner surface 340 is the thickness D3 of the recess. In some embodiments, the height D3 of the recessed portion may be a maximum straight distance between the first inner surface 330 and the second inner surface 340 in a direction perpendicular to the substrate. In some embodiments, the height D3 of the recessed portion is smaller than the substrate thickness D1. In some embodiments, the height D3 of the recessed portion is 10% -70% of the substrate thickness D1. In some embodiments, the height D3 of the recessed portion is 10% -60% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion is 10% -50% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion is 10% -40% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion is 10% -30% of the thickness D1 of the substrate. In some embodiments, the height D3 of the recessed portion is 10% -20% of the thickness D1 of the substrate.

In some embodiments, the distance between the opening 310 and the bottom surface 320 is the depth H3 of the concave portion. In some embodiments, the depth H3 of the recessed portion may be a maximum linear distance between the opening 310 and the bottom surface 320 in a direction parallel to the substrate. In some embodiments, the depth H3 is an arbitrary value that does not penetrate the substrate. In some embodiments, the depth H3 of the recess is 0.1-10 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion is 0.1-8 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion is 0.1-6 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion is 0.1-5 times the substrate thickness D1. In some embodiments, the depth H3 of the recess is 0.1-4 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion is 0.1-2 times the thickness D1 of the substrate. In some embodiments, the depth H3 of the recessed portion is 0.1-0.8 times the substrate thickness D1. In some embodiments, the depth H3 of the recess is 0.1-0.5 times the thickness D1 of the substrate.

In some embodiments, the first inner surface 330 and a plane parallel to the substrate have a first included angle θ 1 . In some embodiments, the second inner surface 340 and a plane parallel to the substrate have a second included angle θ 2 . In some embodiments, the angle values of the first included angle θ 1 and the second included angle θ 2 may be the same. In some embodiments, the angle values of the first included angle θ 1 and the second included angle θ 2 may be different. In some embodiments, the angle value of the first included angle θ 1 is an arbitrary angle value such that the first inner surface 330 does not penetrate the upper surface 120. In some embodiments, the angle value of the first included angle θ 2 is an arbitrary angle value such that the second inner surface 340 does not penetrate the lower surface 130. In some embodiments, the first angle or the second angle θ 1 angle 2 [theta] value of the height of the concave portion is smaller than the arbitrary value D3 substrate thickness D1. In some embodiments, the angle value of the first included angle θ 1 or the second included angle θ 2 is such that the height D3 of the recessed portion is any value from 10% to 70% of the thickness D1 of the substrate. In some embodiments, the angle value of the first included angle θ 1 or the second included angle θ 2 is 0 ° -45 °. In some embodiments, the angle value of the first included angle θ 1 or the second included angle θ 2 is 0 ° -40 °. In some embodiments, the angle value of the first included angle θ 1 or the second included angle θ 2 is 0 ° -30 °. In some embodiments, the angle value of the first included angle θ 1 or the second included angle θ 2 is 0 ° -20 °. In some embodiments, the angle value of the first included angle θ 1 or the second included angle θ 2 is 0 ° -10 °. In some embodiments, the angle value of the first included angle θ 1 or the second included angle θ 2 is 0 ° -5 °.

When the first included angle θ 1 and / or the second included angle θ 2 are not 0, the distance between the first inner surface 330 and the second inner surface 340 at the bottom surface 320 may be greater than the distance between the two at the opening 310. distance. That is, the recessed portion 300 is a groove with a trapezoidal longitudinal section and a bottom surface length greater than the opening length. In other embodiments, the distance between the first inner surface 330 and the second inner surface 340 at the bottom surface 320 may be smaller than the distance between the two at the opening 310. That is, the recessed portion 300 is a groove having a trapezoidal longitudinal section and a bottom surface length shorter than the opening length, so as to facilitate the inflow of the thermoplastic resin material.

Referring to FIG. 4A, in some embodiments, the edge contour of the substrate 110 may include several straight lines. Referring to FIG. 4B, in some embodiments, the edge contour of the substrate 110 may be an arbitrary curve. In some embodiments, the edge contour of the substrate 110 may have any shape and a notch extending through the upper surface 120 and the lower surface 130. For example, different shapes and sizes of interfaces such as a USB socket, a power socket, a headphone socket, and a network interface may be provided on the side of the notebook computer. Correspondingly, different shapes and sizes of cutouts need to be provided on the edge contour of the substrate 110. In some embodiments, the edge contour shape of the substrate 110 may be processed by one or more methods such as stamping, laser cutting, and CNC machine tool forming.

FIG. 4A is a schematic structural diagram of an exemplary substrate in some embodiments. In some embodiments, the substrate 110 may be any one or more of metal-based composites, ceramic-based composites, resin-based composites, fiber composites, sandwich composites, hybrid composites, or fine-grained composites. combination. In some embodiments, the substrate 110 may be a fiber-reinforced composite material. In some embodiments, the substrate 110 may be a fiber-reinforced resin sheet. In some embodiments, the fibers in the fiber-reinforced resin sheet may be continuous fibers. In some embodiments, the fibers in the fiber-reinforced resin sheet may be discontinuous fibers. In some embodiments, the fibers in the fiber-reinforced resin sheet may be one or any combination of inorganic fibers, metal fibers, carbon fibers, organic fibers, or natural fibers. In some embodiments, the inorganic fiber may be one or a combination of basalt fiber, boron fiber, glass fiber, or ceramic fiber. In some embodiments, the metal fiber may be one or more of any combination of aluminum fiber, copper fiber, stainless steel fiber, and the like. In some embodiments, the carbon fiber may be one or a combination of pitch-based carbon fiber, polyacrylonitrile-based carbon fiber, rayon-based carbon fiber, and lignin-based carbon fiber. In some embodiments, the organic fiber may be one or a combination of aramid fiber, polyphenylene sulfide fiber, polyester fiber, acrylic fiber, and nylon fiber. In some embodiments, the natural fiber may be one or a combination of bamboo fiber, hemp fiber, cotton fiber, animal hair fiber, or silk fiber. In some embodiments the fibers are polyacrylonitrile-based carbon fibers. In some embodiments, the fiber may be a polyacrylonitrile-based carbon fiber having an elastic modulus greater than 230 GPa. In some embodiments, the resin may be a thermoplastic resin. In some embodiments, the thermoplastic resin may be one or a combination of polyolefins, nylons, polycarbonates, thermoplastic epoxy resins, and the like. In some embodiments, the resin may be a thermosetting resin. In some embodiments, the thermosetting resin may be one or a combination of epoxy resin, sima resin, unsaturated polyester resin, phenol resin, and the like.

In some embodiments, the substrate 110 may be a fiber-reinforced sandwich structure sheet. The substrate 110 may include a core material and at least one fiber-reinforced skin layer in some embodiments. In some embodiments, the substrate 110 may include an upper fiber-reinforced skin layer, a core material, and a lower fiber-reinforced skin layer. In some embodiments, the fiber-reinforced skin layer may be made from at least one layer of fiber prepreg. In some embodiments, the fiber prepregs of different layers are stacked on top of each other, and the directions of the fibers in the fiber prepregs of different layers are not consistent. For example, the angle between the fiber extension direction in one fiber prepreg and the direction parallel to the substrate is 0 °, and the fiber extension direction in the other fiber prepreg is 90 ° to the direction parallel to the substrate. FIG. 5 is a schematic structural diagram of another exemplary substrate in some embodiments. As shown in FIG. 5, the substrate 110 may include a core material 111, an upper fiber-reinforced surface layer 112 and a lower fiber-reinforced surface layer 113. The upper fiber-reinforced surface layer 112 may be made of a first prepreg 114 and a second prepreg 115. The angle between the fiber extension direction of the first prepreg 114 and the direction parallel to the substrate is 0 °, and the second prepreg The included angle of the fiber extending direction in the impregnating material 115 and the direction parallel to the substrate is 90 °. The lower fiber-reinforced surface layer 113 may be made of the third prepreg 116 and the fourth prepreg 117. The angle between the fiber extension direction of the third prepreg 116 and the direction parallel to the substrate is 0 °. The included angle of the fiber extending direction in the impregnating material 117 and the direction parallel to the substrate is 90 °. In some embodiments, the fiber-reinforced surface layer may be obtained by directly hot-pressing the fiber prepreg on the upper and lower surfaces of the core material. In some embodiments, the fiber-reinforced surface layer may be obtained by hot-pressing the fiber prepreg first, and then the fiber-reinforced surface layer may be hot-pressed on the upper and lower surfaces of the core material.

In some embodiments, the core material 111 may be a foamed material. In some embodiments, the core material 111 may be a foamed material having closed cells. In some embodiments, the foamed material may be one or any combination of polyvinyl chloride, polyurethane, polyetherimide, acrylonitrile-styrene, polymethacrylimide, and polyester. In some embodiments, the core material 111 may be a thermoplastic resin material. In some embodiments, the thermoplastic resin may be one or a combination of polyolefins, nylons, polycarbonates, thermoplastic epoxy resins, and the like. In some embodiments, the core material 111 may be a glass bead-filled resin material. In some embodiments, the resin in the glass bead-filled resin material may be a thermosetting resin. In some embodiments, the thermosetting resin may be any one or a combination of epoxy resin, sima resin, unsaturated polyester resin, and phenol resin. In some embodiments, the resin in the glass bead-filled resin material may be a thermoplastic resin. In some embodiments, the thermoplastic resin may be one or a combination of polyolefins, nylons, polycarbonates, thermoplastic epoxy resins, and the like. In some embodiments, the core material 111 may be a non-woven fabric. In some embodiments, the core material 111 may be any one or a combination of several types of plates having a honeycomb structure, a grid structure, or an eyelet structure. In some embodiments, the core material 111 may be a softwood material, that is, a softer wood material. In some embodiments, the softwood can be any combination of one or more of pine, spruce, cedar, fir, larch, douglas fir, hemlock, cypress, California redwood, and yew. In some embodiments, the core material 111 may be a fiber-reinforced thermoplastic resin, and the thermoplastic resin may be one or a combination of polyolefin, nylon, polycarbonate, thermoplastic epoxy, and the like. In some embodiments, the core material 111 may be a fiber-reinforced thermosetting resin, and the thermosetting resin may be one or any combination of epoxy resin, sima resin, unsaturated polyester resin, and phenolic resin. In some embodiments, the core material 111 may be a fiber felt with a binder and open cavities inside, wherein the binder may be a thermoplastic resin or a thermosetting resin, and the thermoplastic resin may be a polyolefin, nylon, or polymer. The thermosetting resin may be any one or a combination of one or more of a carbonate, a thermoplastic epoxy resin, or the like. The thermosetting resin may be any one or a combination of one or more of an epoxy resin, a sima resin, an unsaturated polyester resin, and a phenol resin.

In some embodiments, the fiber-reinforced skin layer may be a fiber-reinforced resin material. In some embodiments, the fibers in the fiber-reinforced skin layer may be continuous fibers. In some embodiments, the fibers may be discontinuous fibers. In some embodiments, the fibers in the fiber-reinforced surface layer may be one or more of any one of inorganic fibers, metal fibers, carbon fibers, organic fibers, or natural fibers. In some embodiments, the inorganic fiber may be one or a combination of basalt fiber, boron fiber, glass fiber, or ceramic fiber. In some embodiments, the metal fiber may be one or more of any combination of aluminum fiber, copper fiber, stainless steel fiber, and the like. In some embodiments, the carbon fiber may be one or a combination of pitch-based carbon fiber, polyacrylonitrile-based carbon fiber, rayon-based carbon fiber, and lignin-based carbon fiber. In some embodiments, the organic fiber may be one or a combination of aramid fiber, polyphenylene sulfide fiber, polyester fiber, acrylic fiber, and nylon fiber. In some embodiments, the natural fiber may be one or a combination of bamboo fiber, hemp fiber, cotton fiber, animal hair fiber, or silk fiber. In some embodiments the fibers are polyacrylonitrile-based carbon fibers. In some embodiments, the fibers are polyacrylonitrile-based carbon fibers having an elastic modulus greater than 230 GPa. In some embodiments, the resin may be a thermoplastic resin. In some embodiments, the thermoplastic resin may be one or a combination of polyolefins, nylons, polycarbonates, thermoplastic epoxy resins, and the like. In some embodiments, the resin may be a thermosetting resin. In some embodiments, the thermosetting resin may be one or a combination of epoxy resin, sima resin, unsaturated polyester resin, phenol resin, and the like.

6A and 6B are schematic structural diagrams of composite molding members in some embodiments of the present application. The composite molding member 600 includes the sheet member 100 and the hemming member 400 as described above. In some embodiments, at least a part of the hemming member 400 may enter the connection portion of the sheet member 100 to be connected with the sheet member 100. In some embodiments, the sheet member 100 and the hemming member 400 may be tightly connected by any combination of one or more of inlaying, adhesive bonding, or injection molding. In some embodiments, the edging member may be any one or a combination of one or more of a metal material, a ceramic material, a rubber, a glass material, a thermoplastic resin material, a thermosetting resin material, and the like. In some embodiments, the edging member 400 may be a thermoplastic resin material. In some embodiments, the edge wrapping member 400 may connect the thermoplastic resin material to the sheet member 100 by filling or wrapping the connection portion of the sheet member 100 through an injection molding process. In some embodiments, the thermoplastic resin material may be polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, nylon, rubber, thermoplastic epoxy, etc. One or a combination of several.

As shown in FIG. 6A, in some embodiments, the connecting portion is a protruding portion 200 at least partially protruding outward from the substrate. In some embodiments, the hemming material may surround the protrusion 200 and the side end surface 140 to form the hemming member 400. In some embodiments, the edging material may also enter the recess or hole in the protruding portion 200 to further enhance the adhesion effect between the protruding portion 200 and the edging material. In some embodiments, the sheet member 100 may be a fiber-reinforced resin as described above. See FIGS. 6A-6F. In some embodiments, the plate member 100 may be a fiber-reinforced sandwich structure as described above, including a core material and at least one fiber-reinforced surface layer. In some embodiments, the protrusion 200 may be a portion of the substrate 110 that protrudes from an edge of the substrate 110. In some embodiments, the protrusion 200 may include at least a portion of a core material and a portion of a fiber-reinforced skin layer. In some embodiments, the protrusion 200 may include at least a portion of the lower fiber-reinforced skin layer 113. In some embodiments, the protrusion 200 may be at least a part of the core material.

As shown in FIG. 6G, in some embodiments, the connecting portion is a recessed portion 300 having at least a portion recessed into the substrate 110. In some embodiments, the hemming material may fill the recess 300 and wrap the side end surface 140 to form the hemming member 400. In this application, the edging member 400 can enter the sheet member 100 and be evenly connected to the sheet member 100, which can improve the connection strength between the sheet member 100 and the edging member 400. The fatigue resistance and reliability of the composite molded member 600 are improved.

In some embodiments, the composite molding member 600 may be manufactured by the following manufacturing method: First, the substrate 110 is prepared. Then, a connection portion is formed at the side end surface 140 of the substrate 110. At least a portion of the connection portion is protruded outward from the substrate 110, or at least a portion of the connection portion is recessed into the substrate 110. Then, the connecting portion is wrapped or filled by a hemming material, and at least the side end surface 140 of the plate-shaped member 100 is wrapped to form a hemming member 400. In some embodiments, the edging material may be any one or a combination of one or more of a metal material, a ceramic material, a rubber, a glass material, a thermoplastic resin material, a thermosetting resin material, and the like. In some embodiments, the edging material may be a thermoplastic resin material. In some embodiments, the edge wrapping member 400 may be made by one or a combination of one or more of injection molding, extrusion molding, compression molding, casting molding, fused deposition molding, and the like. In some embodiments, the edging member 400 may be made of a thermoplastic resin material through an injection molding process.

In some embodiments, the substrate 110 may be a fiber-reinforced resin sheet (see FIG. 3). The step of preparing the substrate 110 may include mixing fibers and a resin material to make a fiber prepreg, and hot-pressing the fiber prepreg to form the substrate 110. FIG. 7 is an exemplary flowchart of a method for manufacturing a composite molded member in some embodiments in the present application. As shown in FIG. 7, in 710, a fiber and a resin material are mixed to prepare a fiber prepreg. In some embodiments, the fibers may be dipped in a resin to form a fiber prepreg. In step 720, the fiber prepreg may be hot-pressed to form the substrate 110. In some embodiments, the hot pressing may be performed at a temperature of 120 ° -160 ° and a pressure of 0.2MPa-0.8Mpa. In 730, the connection portion is processed at the side end surface 140 of the substrate 110. In some embodiments, the connecting portion is the protruding portion 200 as described above. In some embodiments, the protrusions may be machined using equipment such as drilling equipment, milling machines, or CNC machine tools. In some embodiments, a milling machine may be used to mill the upper surface and / or the lower surface at the edge of the substrate to obtain a protrusion toward the outside of the substrate. In some embodiments, continuous protrusions may be milled along the edge of the substrate parallel to the substrate. In some embodiments, a plurality of protrusions separated from each other parallel to the substrate may be milled along an edge of the substrate. In some embodiments, several depressions may be milled on the raised first and second outer surfaces. In some embodiments, a plurality of holes may be milled on the protrusion through the first outer surface and the second outer surface. In some embodiments, the connection portion may be the recessed portion 300 as described above. In some embodiments, the recessed portion 300 may be processed using equipment such as a drilling device, a milling machine, or a CNC machine tool. In some embodiments, according to the shape of the longitudinal section of the recessed portion 300 designed in advance, different processing tools may be selected to cut the recessed portion 300 on the side end surface 140 of the substrate 110. In some embodiments, continuous grooves extending along the edge of the substrate may be processed on the side end surface of the substrate. In some embodiments, a plurality of separated grooves extending along the edge of the substrate may be processed on the side end surface of the substrate. Grooves. In some embodiments, the groove may be processed so that a distance between the first inner surface 330 and the second inner surface 340 at the bottom surface 320 is smaller than a distance between the two at the opening 310. In 740, the thermoplastic resin material is wrapped or filled in the connection portion through an injection molding process, and at least the side end surface 140 of the substrate 110 is wrapped to form a hemming member. In some embodiments, the thermoplastic resin material may be wrapped around the protrusion 200 and the side end surface 140 to form a hemming member 400 by an injection molding process. In some embodiments, the thermoplastic resin material may be used to fill the recessed portion 300 by an injection molding process, and wrap the side end surface 140 to form a hemming member 400. In some embodiments, the corresponding injection molding parameters can be selected according to different thermoplastic resin materials. For example, if a polypropylene material is selected as the edging material, the injection temperature can be between 180 ° -200 °, and the pressure can be between 60MPa-140MPa. between. If the edging material is polycarbonate, the injection temperature can be between 220 ° -350 °, and the pressure can be 80MPa-130MPa.

In some embodiments, the substrate 110 may be a fiber-reinforced sandwich structure plate (see FIG. 5), including a core material and at least one fiber-reinforced skin layer. In some embodiments, the fiber-reinforced surface layer may be obtained by first hot pressing, and then the core material and the fiber-reinforced surface layer may be subjected to second hot pressing to obtain the substrate. In some embodiments, the preparation of the fiber-reinforced surface layer may include mixing the fiber and the resin material to make a fiber prepreg, and the fiber prepreg is hot-pressed to form the fiber-reinforced surface layer. In some embodiments, the substrate includes a core material, an upper fiber-reinforced skin layer, and a lower fiber-reinforced skin layer. In some embodiments, the upper fiber-reinforced surface layer, the core material, and the lower fiber-reinforced surface layer may be sequentially stacked and hot-pressed to form the substrate. In some embodiments, the fiber-reinforced skin layer and the core material may be joined together by an adhesive layer. FIG. 8 is another exemplary flowchart of a method for manufacturing a composite molded component in some embodiments of the present application. In 810, the fiber and resin material are mixed to make a fiber prepreg. In some embodiments, the fibers may be dipped in a resin to form a fiber prepreg. In step 820, the fiber prepreg may be hot-pressed to form a fiber-reinforced surface layer. In some embodiments, at least two layers of fiber prepreg may be hot pressed into a fiber-reinforced skin layer. In some embodiments, the fiber prepregs of different layers are arranged on top of each other, and the directions of the fibers in the fiber prepregs of different layers are inconsistent. For example, the angle between the fiber extension direction in one fiber prepreg and the direction parallel to the substrate is 0 °, and the fiber extension direction in the other fiber prepreg is 90 ° to the direction parallel to the substrate. In some embodiments, ten layers of fiber prepreg may be laminated into a fiber-reinforced skin layer. In some embodiments, twenty layers of fiber prepreg may be laminated into a fiber-reinforced skin layer. In 830, the upper fiber-reinforced surface layer, the upper bonding layer, the core material, the lower bonding layer, and the lower fiber-reinforced surface layer may be sequentially stacked and hot-pressed to form the substrate 110. In some embodiments, the hot pressing may be performed at a temperature of 120 ° -160 ° and a pressure of 0.2MPa-0.8Mpa. In 840, the connection portion is processed at the side end surface 140 of the substrate 110. In some embodiments, the connecting portion is the protruding portion 200 as described above. In some embodiments, the protrusion 200 may be processed using a drilling device, a milling machine, or a CNC machine tool. In some embodiments, at least a portion of the upper fiber-reinforced surface layer may be milled using a milling machine to obtain the protrusion 200. In some embodiments, at least a portion of the lower fiber-reinforced surface layer may be milled using a milling machine to obtain the protrusion 200. In some embodiments, a portion of the upper fiber-reinforced surface layer and the core material may be milled using a milling machine to obtain the protrusion 200. In some embodiments, a portion of the lower fiber-reinforced surface layer and the core material may be milled using a milling machine to obtain the protrusion 200. In some embodiments, the upper fiber-reinforced surface layer and the core material may be removed by using a milling machine to obtain the protrusion 200. In some embodiments, the lower fiber-reinforced surface layer and the core material may be milled using a milling machine to obtain the protrusion 200. In some embodiments, at least a portion of the upper fiber-reinforced surface layer, the core material, and the lower fiber surface layer may be milled using a milling machine to obtain the protruding portion 200. In some embodiments, a milling machine may be used to mill the upper fiber-reinforced surface layer and / or the lower fiber-reinforced surface layer at the edge of the substrate to expose the core material near the edge of the substrate, and use the exposed core material as the protrusion 200. In some embodiments, the upper fiber-reinforced surface layer and / or the lower fiber-reinforced surface layer may be continuously milled along the edge of the substrate to obtain continuous protrusions parallel to the substrate. In some embodiments, the upper fiber-reinforced surface layer and / or the lower fiber-reinforced surface layer may be continuously milled along the edge of the substrate, and the exposed core material is processed into a plurality of protrusions separated from each other. In some embodiments, a plurality of depressions may be milled on the first outer surface and the second outer surface of the protrusion 200. In some embodiments, a plurality of holes may be milled on the protruding portion 200 through the first outer surface and the second outer surface. In some embodiments, the connection portion may be the recessed portion 300 as described above. In some embodiments, the recessed portion 300 may be processed using equipment such as drilling equipment or numerically controlled machine tools. In some embodiments, according to the shape of the longitudinal section of the recessed portion 300 designed in advance, different processing tools may be selected to cut the recessed portion 300 on the side end surface 140 of the substrate 110. In some embodiments, continuous grooves extending along the edge of the substrate may be processed on the side end surface of the substrate. In some embodiments, a plurality of separated grooves extending along the edge of the substrate may be processed on the side end surface of the substrate. Grooves. In some embodiments, the groove may be processed so that a distance between the first inner surface 330 and the second inner surface 340 at the bottom surface 320 is smaller than a distance between the two at the opening 310. In 850, the thermoplastic resin material is wrapped or filled with the connection portion through an injection molding process, and at least the side end surface 140 of the substrate 110 is wrapped to form a hemming member. In some embodiments, the thermoplastic resin material may be wrapped around the protrusion 200 and the side end surface 140 to form a hemming member 400 by an injection molding process. In some embodiments, the thermoplastic resin material may be used to fill the recessed portion 300 by an injection molding process, and wrap the side end surface 140 to form a hemming member 400. In some embodiments, the corresponding injection molding parameters may be selected according to different thermoplastic resin materials, such as the injection temperature and pressure.

In some embodiments, the substrate 110 is made of a core material and a fiber prepreg by one-time molding. In some embodiments, the core material and the fiber prepreg may be hot-pressed to form a substrate, and the fiber prepreg directly forms a fiber-reinforced surface layer on the surface of the core material. In some embodiments, the upper fiber prepreg, the core material, and the lower fiber prepreg may be sequentially stacked and hot-pressed to form the substrate. FIG. 9 is another exemplary flowchart of a method for manufacturing a composite molded component in some embodiments of the present application. In 910, the fiber and resin material are mixed to make a fiber prepreg. In some embodiments, the fibers may be dipped in a resin to form a fiber prepreg. In step 920, the upper fiber prepreg, the core material, and the lower fiber prepreg may be sequentially stacked and hot-pressed to form the substrate 110. In some embodiments, the hot pressing may be performed at a temperature of 120 ° -160 ° and a pressure of 0.2MPa-0.8Mpa. In some embodiments, the upper fiber prepreg may include at least two layers of fiber prepreg. In some embodiments, the fiber prepregs of different layers are arranged on top of each other, and the directions of the fibers in the fiber prepregs of different layers are inconsistent. For example, the angle between the fiber extension direction in one fiber prepreg and the direction parallel to the substrate is 0 °, and the fiber extension direction in the other fiber prepreg is 90 ° to the direction parallel to the substrate. In some embodiments, the lower fiber prepreg may include at least two layers of fiber prepreg. In some embodiments, the fiber prepregs of different layers are arranged on top of each other, and the directions of the fibers in the fiber prepregs of different layers are inconsistent. For example, the angle between the fiber extension direction in one fiber prepreg and the direction parallel to the substrate is 0 °, and the fiber extension direction in the other fiber prepreg is 90 ° to the direction parallel to the substrate. In 930, the connection portion is processed at the side end surface 140 of the substrate 110. In some embodiments, the connecting portion is the protruding portion 200 as described above. In some embodiments, the protrusion 200 may be processed using a drilling device, a milling machine, or a CNC machine tool. In some embodiments, at least a portion of the upper fiber prepreg may be milled using a milling machine to obtain the protrusion 200. In some embodiments, a milling machine may be used to mill at least a portion of the lower fiber prepreg to obtain the protrusion 200. In some embodiments, a portion of the upper fiber prepreg and the core material may be milled using a milling machine to obtain the protrusion 200. In some embodiments, a portion of the lower fiber prepreg and the core material may be milled using a milling machine to obtain the protrusion 200. In some embodiments, the upper fiber prepreg and core material may be milled using a milling machine to obtain the protrusion 200. In some embodiments, the lower fiber prepreg and the core material may be milled using a milling machine to obtain the protrusion 200. In some embodiments, at least a part of the upper fiber prepreg, the core material, and the lower fiber prepreg may be milled using a milling machine to obtain the protrusion 200. In some embodiments, the upper fiber prepreg and / or the lower fiber prepreg at the edge of the substrate may be milled using a milling machine to expose the core material near the edge of the substrate, and the exposed core material is used as the protrusion 200. In some embodiments, the upper fiber prepreg and / or the lower fiber prepreg may be continuously milled along the edge of the substrate to obtain continuous protrusions parallel to the substrate. In some embodiments, the upper fiber prepreg and / or the lower fiber prepreg may be continuously milled along the edge of the substrate, and the exposed core material is processed into a plurality of protrusions separated from each other. In some embodiments, a plurality of depressions may be milled on the first outer surface and the second outer surface of the protrusion 200. In some embodiments, a plurality of holes may be milled on the protruding portion 200 through the first outer surface and the second outer surface. In some embodiments, the connection portion may be the recessed portion 300 as described above. In some embodiments, the recessed portion 300 may be processed using equipment such as drilling equipment or numerically controlled machine tools. In some embodiments, according to the shape of the longitudinal section of the recessed portion 300 designed in advance, different processing tools may be selected to cut the recessed portion 300 on the side end surface 140 of the substrate 110. In some embodiments, continuous grooves extending along the edge of the substrate may be processed on the side end surface of the substrate. In some embodiments, a plurality of separated grooves extending along the edge of the substrate may be processed on the side end surface of the substrate. Grooves. In some embodiments, the groove may be processed so that a distance between the first inner surface 330 and the second inner surface 340 at the bottom surface 320 is smaller than a distance between the two at the opening 310. In 940, the thermoplastic resin material is wrapped or filled with the connection portion through an injection molding process, and at least the side end surface 140 of the substrate 110 is wrapped to form a hemming member. In some embodiments, the thermoplastic resin material may be wrapped around the protrusion 200 and the side end surface 140 to form a hemming member 400 by an injection molding process. In some embodiments, the thermoplastic resin material may be used to fill the recessed portion 300 by an injection molding process, and wrap the side end surface 140 to form a hemming member 400. In some embodiments, the corresponding injection molding parameters may be selected according to different thermoplastic resin materials, such as the injection temperature and pressure.

Example 1

First, carbon fiber and resin were made into a carbon fiber prepreg having a fiber surface density of 150 gsm and a resin content of 37%. Then, the carbon fiber prepreg was hot-pressed at a temperature of 140 ° C. and a pressure of 0.5 MPa for 60 minutes, and was molded into a carbon fiber sheet having a thickness of 1.25 mm and a length and width of 300 mm × 200 mm as a substrate. Then a milling machine was used to process the protrusions on the side end surface of the substrate. The height of the protruding portion may be 1.25 mm, and the width of the protruding portion may be 0.5 mm. In one embodiment, a milling machine is used to process a plurality of holes penetrating through the protrusions perpendicular to the substrate. Finally, the polycarbonate modified material is subjected to hemming treatment around the side end surface of the carbon fiber reinforced board with an injection molding machine to form an hemming member.

Example 2

First, carbon fiber and thermosetting resin were made into a carbon fiber prepreg having a fiber surface density of 150 gsm and a resin content of 37%. Then, the carbon fiber prepreg was hot-pressed at a temperature of 140 ° C. and a pressure of 0.5 MPa for 40 minutes to obtain a fiber-reinforced surface layer. The upper fiber-reinforced surface is made of two layers of carbon fiber prepreg by hot pressing. The two layers of carbon fiber prepreg are stacked on top of each other. The angle between the fiber extension direction and the direction parallel to the substrate in a carbon fiber prepreg is 0 °, the fiber extension direction in another carbon fiber prepreg is 90 ° with the direction parallel to the substrate. Two layers of carbon fiber prepreg are hot-pressed to form a lower fiber-reinforced surface layer. The two layers of carbon fiber prepreg are stacked on top and bottom. The angle between the fiber extension direction and the direction parallel to the substrate in a carbon fiber prepreg is 0 °. The direction of fiber extension in the other carbon fiber prepreg is 90 ° from the direction parallel to the substrate. Then, the upper fiber reinforced surface layer, modified polypropylene (adhesive layer), polypropylene foam core material (density 0.8g / cm3, thickness 0.8mm), modified polypropylene (adhesive layer), and lower fiber reinforced surface layer They are stacked in order, and hot-pressed at a temperature of 140 ° C. and a pressure of 0.5 MPa for 0-60 min, and molded into a carbon fiber reinforced sandwich structure board with a thickness of 1.25 mm and a length and width of 300 mm × 200 mm as a substrate. In some embodiments, a milling machine may be used to remove a portion of the upper fiber-reinforced surface layer near the upper surface of the substrate edge to expose the remaining upper fiber-reinforced surface layer to form a protrusion including a portion of the upper fiber-reinforced surface layer, the core material, and the lower fiber-reinforced surface layer. unit. In some embodiments, a milling machine may be used to remove the upper fiber-reinforced surface layer on the edge of the substrate to expose the core material, forming a protrusion including the core material and the lower fiber-reinforced surface layer. In some embodiments, a milling machine may be used to remove a portion of the upper fiber-reinforced surface layer and the core material at the edge of the substrate to expose the remaining core material to form a protrusion including a portion of the core material and the lower fiber-reinforced surface layer. In some embodiments, a milling machine may be used to remove the upper fiber-reinforced surface layer and the core material at the edge of the substrate, expose the lower fiber-reinforced surface layer, and form a protrusion including the lower fiber-reinforced surface layer. In some embodiments, a milling machine may be used to remove a portion of the upper fiber-reinforced surface layer, the core material, and the lower fiber-reinforced surface layer at the edge of the substrate to expose the remaining lower fiber-reinforced surface layer to form a protrusion including a portion of the lower fiber-reinforced surface layer. In some embodiments, a milling machine may be used to remove the upper fiber-reinforced surface layer and the lower fiber-reinforced surface layer at the edge of the substrate, exposing a part of the core material, and forming a protrusion including the core material. A plurality of through-holes perpendicular to the substrate direction are processed on the protruding portion. Finally, the polycarbonate modified material is subjected to hemming treatment around the side end surface of the carbon fiber reinforced board with an injection molding machine to form an hemming member.

Example 3

First, carbon fiber and thermosetting resin were made into a carbon fiber prepreg having a fiber surface density of 150 gsm and a resin content of 37%. Then, the upper fiber prepreg, polypropylene glass microspheres filled with epoxy resin core material (density 0.8g / cm3, thickness 0.8mm), and the lower fiber prepreg were stacked in order, at a temperature of 140 ° C and a pressure of 0.5. Under the condition of MPa, it is hot-pressed for 0-60min, and molded into a carbon fiber reinforced sandwich structure board with a thickness of 1.25mm and a length and width of 300mm * 200mm as a substrate. The upper fiber prepreg includes two layers of carbon fiber prepreg, and the two layers of carbon fiber prepreg are stacked on top and bottom. The angle between the fiber extension direction and the direction parallel to the substrate in a carbon fiber prepreg is 0 °. The direction of fiber extension in the other carbon fiber prepreg is 90 ° from the direction parallel to the substrate. The lower fiber prepreg includes two layers of carbon fiber prepreg, and the two layers of carbon fiber prepreg are stacked up and down. The angle between the fiber extension direction of a carbon fiber prepreg and the direction parallel to the substrate is 0 °. The direction of fiber extension in a carbon fiber prepreg is 90 ° from the direction parallel to the substrate. In some embodiments, a milling machine may be used to remove a portion of the upper fiber prepreg near the upper surface of the substrate edge to expose the remaining upper fiber prepreg to form a portion including the upper fiber prepreg, core material, and lower fiber prepreg. Material protrusions. In some embodiments, a milling machine may be used to remove the upper fiber prepreg at the edge of the substrate to expose the core material, forming a protrusion including the core material and the lower fiber prepreg. In some embodiments, a milling machine may be used to remove a portion of the upper fiber prepreg and the core material from the edge of the substrate to expose the remaining core material to form a protrusion including a portion of the core material and the lower fiber prepreg. In some embodiments, a milling machine may be used to remove the upper fiber prepreg and the core material from the edge of the substrate to expose the lower fiber prepreg and form a protrusion including the lower fiber prepreg. In some embodiments, a part of the upper fiber prepreg, the core material, and the lower fiber prepreg at the edge of the substrate may be removed using a milling machine to expose the remaining lower fiber prepreg and form a protrusion including a portion of the lower fiber prepreg. Department. In some embodiments, a milling machine may be used to expose the upper fiber prepreg and the lower fiber prepreg at the edge of the substrate to expose a part of the core material and form a protrusion including the core material. In some embodiments, the edges of the protrusions can be processed into a curved line of uneven staggered arrangements. In some embodiments, a plurality of through-holes can be processed on the protruding portion perpendicular to the substrate direction. Finally, the polycarbonate modified material is subjected to hemming treatment around the side end surface of the carbon fiber reinforced board with an injection molding machine to form an hemming member.

Example 4

First, carbon fiber and resin were made into a carbon fiber prepreg having a fiber surface density of 150 gsm and a resin content of 37%. Then, the carbon fiber prepreg was hot-pressed at a temperature of 140 ° C. and a pressure of 0.5 MPa for 60 minutes, and was molded into a carbon fiber sheet having a thickness of 1.25 mm and a length and width of 300 mm × 200 mm as a substrate. Then, a numerically controlled machine tool is used to machine a recess on the side end surface of the substrate. The height of the recessed portion may be 0.6 mm, and the depth of the recessed portion may be 0.3 mm. In one embodiment, the first included angle and the second included angle may be 0 °. In one embodiment, the first included angle and the second included angle may be 5 °, and the length dimension of the opening is greater than the length dimension of the bottom surface to form a concave portion having a trapezoidal longitudinal section. Finally, the polycarbonate modified material is subjected to hemming treatment around the side end surface of the carbon fiber reinforced board with an injection molding machine to form an hemming member.

Example 5

First, carbon fiber and thermosetting resin were made into a carbon fiber prepreg having a fiber surface density of 150 gsm and a resin content of 37%. Then, the carbon fiber prepreg was hot-pressed at a temperature of 140 ° C. and a pressure of 0.5 MPa for 40 minutes to obtain a fiber-reinforced surface layer. Among them, two layers of carbon fiber prepreg are hot-pressed to form a fiber-reinforced upper surface layer. The two layers of carbon fiber prepreg are stacked on top of each other. The angle between the direction of fiber extension in a carbon fiber prepreg and the direction parallel to the substrate is 0 °, the fiber extension direction in another carbon fiber prepreg is 90 ° with the direction parallel to the substrate. The two layers of carbon fiber prepreg are hot-pressed to form a fiber-reinforced lower layer. The two layers of carbon fiber prepreg are stacked on top of each other. The angle between the fiber extension direction and the direction parallel to the substrate in a carbon fiber prepreg is 0 °. The direction of fiber extension in the other carbon fiber prepreg is 90 ° from the direction parallel to the substrate. Then, the fiber-reinforced upper surface layer, modified polypropylene (adhesive layer), polypropylene foam core material (density 0.8g / cm3, thickness 0.8mm), modified polypropylene (adhesive layer), and fiber-reinforced lower layer They are stacked in order, and hot-pressed at a temperature of 140 ° C. and a pressure of 0.5 MPa for 0-60 min, and molded into a carbon fiber reinforced sandwich structure board with a thickness of 1.25 mm and a length and width of 300 mm × 200 mm as a substrate. Then, a numerically controlled machine tool is used to machine a recess on the side end surface of the substrate. The height of the recessed portion may be 0.5 mm, and the depth of the recessed portion may be 0.4 mm. In one embodiment, the first included angle and the second included angle may be 0 °. In one embodiment, the first included angle and the second included angle may be 10 °, and the opening length dimension and the bottom surface length dimension are formed to form a concave portion having a trapezoidal longitudinal section. Finally, the polycarbonate modified material is subjected to hemming treatment around the side end surface of the carbon fiber reinforced board with an injection molding machine to form an hemming member.

Example 6

First, carbon fiber and thermosetting resin were made into a carbon fiber prepreg having a fiber surface density of 150 gsm and a resin content of 37%. Then, the carbon fiber prepreg was hot-pressed at a temperature of 140 ° C. and a pressure of 0.5 MPa for 40 minutes to obtain a fiber-reinforced surface layer. Among them, two layers of carbon fiber prepreg are hot-pressed to form a fiber-reinforced upper surface layer. The two layers of carbon fiber prepreg are stacked on top of each other. The angle between the direction of fiber extension in a carbon fiber prepreg and the direction parallel to the substrate is 0 °, the fiber extension direction in another carbon fiber prepreg is 90 ° with the direction parallel to the substrate. The two layers of carbon fiber prepreg are hot-pressed to form a fiber-reinforced lower layer. The two layers of carbon fiber prepreg are stacked on top of each other. The angle between the fiber extension direction and the direction parallel to the substrate in a carbon fiber prepreg is 0 °. The direction of fiber extension in the other carbon fiber prepreg is 90 ° from the direction parallel to the substrate. Then, the fiber-reinforced upper surface layer, polyurethane (adhesive layer), cork (density 0.8g / cm3, thickness 0.8mm), polyurethane (adhesive layer), and fiber-reinforced lower layer are placed in this order, at a temperature of 140 ° C and pressure Under the condition of 0.5 MPa, it is hot-pressed for 0-60 minutes, and molded into a carbon fiber reinforced sandwich structure board with a thickness of 1.25 mm and a length and width of 300 mm * 200 mm as a substrate. Then, a numerically controlled machine tool is used to machine a recess on the side end surface of the substrate. The height of the recessed portion may be 0.5 mm, and the depth of the recessed portion may be 0.4 mm. In one embodiment, the first included angle and the second included angle may be 0 °. In one embodiment, the first included angle and the second included angle may be 10 °, and the opening length dimension and the bottom surface length dimension are formed to form a concave portion having a trapezoidal longitudinal section. Finally, the polycarbonate modified material is subjected to hemming treatment around the side end surface of the carbon fiber reinforced board with an injection molding machine to form an hemming member.

Example 7

First, carbon fiber and thermosetting resin were made into a carbon fiber prepreg having a fiber surface density of 150 gsm and a resin content of 37%. Then, the upper fiber prepreg, polypropylene glass microspheres filled with epoxy resin core material (density 0.8g / cm3, thickness 0.8mm), and the lower fiber prepreg were stacked in order, at a temperature of 140 ° C and a pressure of 0.5. Under the condition of MPa, it is hot-pressed for 0-60min, and molded into a carbon fiber reinforced sandwich structure board with a thickness of 1.25mm and a length and width of 300mm * 200mm as a substrate. The upper fiber prepreg includes two layers of carbon fiber prepreg, and the two layers of carbon fiber prepreg are stacked on top and bottom. The angle between the fiber extension direction and the direction parallel to the substrate in a carbon fiber prepreg is 0 °. The direction of fiber extension in the other carbon fiber prepreg is 90 ° from the direction parallel to the substrate. The lower fiber prepreg includes two layers of carbon fiber prepreg, and the two layers of carbon fiber prepreg are stacked up and down. The angle between the fiber extension direction of a carbon fiber prepreg and the direction parallel to the substrate is 0 °. The direction of fiber extension in a carbon fiber prepreg is 90 ° from the direction parallel to the substrate. Then, a numerically controlled machine tool is used to machine a recess on the side end surface of the substrate. The height of the recessed portion may be 0.5 mm, and the depth of the recessed portion may be 0.4 mm. In one embodiment, the first included angle and the second included angle may be 0 °. In one embodiment, the first included angle and the second included angle may be 5 °, and the opening length dimension and the bottom surface length dimension are formed to form a concave portion having a trapezoidal longitudinal section. Finally, the polycarbonate modified material is subjected to hemming treatment around the side end surface of the carbon fiber reinforced board with an injection molding machine to form an hemming member.

The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure of the invention is merely an example, and does not constitute a limitation on the present application. Although it is not explicitly stated here, those skilled in the art may make various modifications, improvements and amendments to this application. Such modifications, improvements and amendments are suggested in this application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of this application.

Meanwhile, specific words are used in this application to describe the embodiments of this application. For example, "one embodiment", "an embodiment" and / or "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "one embodiment" or "one embodiment" or "an alternative embodiment" mentioned two or more times in different places in this specification does not necessarily refer to the same embodiment . In addition, certain features, structures, or characteristics in one or more embodiments of the present application may be appropriately combined. In addition, unless explicitly stated in the claims, the order of processing elements and sequences described herein, the use of alphanumeric characters, or the use of other names is not intended to limit the order of the processes and methods of this application. Although the above disclosure discusses some embodiments of the invention that are currently considered useful through various examples, it should be understood that such details are for illustrative purposes only, and that the appended claims are not limited to the disclosed embodiments only. Instead, the rights The requirements are intended to cover all modifications and equivalent combinations that are within the spirit and scope of the embodiments of this application. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

For the same reason, it should be noted that, in order to simplify the expressions disclosed in this application and thereby help the understanding of one or more inventive embodiments, the foregoing description of the embodiments of the application sometimes incorporates multiple features into one embodiment, In the drawings or their description. However, this disclosure method does not mean that the subject of the present application requires more features than those mentioned in the claims. Indeed, the features of an embodiment are less than all the features of a single embodiment disclosed above.

In some embodiments, numbers describing components and the number of attributes are used. It should be understood that, for such numbers used in the description of the embodiments, the modifiers "about", "approximately" or "substantially" are used in some examples. To modify. Unless stated otherwise, "about", "approximately" or "substantially" indicates that the number allows for a variation of ± 20%. Accordingly, in some embodiments, the numerical data used in the specification and claims are approximate values, and the approximate values may be changed according to the characteristics required by individual embodiments. In some embodiments, the numerical data should take into account the specified significant digits and adopt the method of general digits retention. Although the numerical ranges and data used to confirm the breadth of the range in some embodiments of this application are approximate values, in specific embodiments, the setting of such values is as accurate as possible within the feasible range.

Finally, it should be understood that the embodiments described in this application are only used to illustrate the principles of the embodiments of this application. Other variations may also fall within the scope of this application. Therefore, by way of example and not limitation, alternative configurations of embodiments of the present application may be considered consistent with the teachings of the present application. Accordingly, the embodiments of the present application are not limited to the embodiments explicitly introduced and described in the present application.

Claims (30)

  1. A plate-shaped member, comprising:
    A substrate having an upper surface and a lower surface, and a side end surface distributed between the upper surface and the lower surface and distributed around an edge of the substrate;
    The side end surface has a connection portion that extends along at least a portion of an edge of the substrate; a height of the connection portion is smaller than a thickness of the substrate; A distance between the lower surfaces; a height of the connection portion is a distance between a vertex and a bottom point of the connection portion in a direction perpendicular to the substrate; and
    At least a part of the connection portion is protruded to the outside of the substrate, or at least a portion of the connection portion is recessed into the substrate.
  2. The plate-like member according to claim 1, wherein:
    At least a part of the connecting portion is a protruding portion, and the protruding portion is a protrusion extending in a direction parallel to the substrate and extending to the outside of the substrate;
    The height of the protruding portion is 10% -90% of the thickness of the substrate.
  3. The plate-like member according to claim 2, wherein:
    The protruding portion has a first outer surface extending in a direction parallel to the substrate, and a second outer surface opposite to the first outer surface;
    The first outer surface and / or the second outer surface of the protrusion is a flat surface; or
    A depression is provided on the first outer surface and / or the second outer surface of the protrusion; or
    The protruding portion has a hole penetrating the first outer surface and the second outer surface.
  4. The plate-like member according to claim 2, wherein:
    The protrusion is a continuous protrusion extending along the edge of the substrate; or,
    The protrusion is a plurality of protrusions separated from each other extending along the edge of the substrate.
  5. The plate-like member according to claim 2, wherein:
    The edge contour of the protrusion includes a straight line; or,
    The edge contour of the protrusion is an arbitrary curve.
  6. The plate-like member according to claim 2, wherein:
    The substrate is a fiber-reinforced sandwich structure plate; the substrate includes a core material and at least one fiber-reinforced surface layer.
  7. The plate-like member according to claim 6, wherein:
    The protrusion includes at least a part of the core material and a part of the fiber-reinforced surface layer.
  8. The plate-like member according to claim 6, wherein:
    The protruding portion is at least a part of the fiber-reinforced surface layer.
  9. The plate-like member according to claim 6, wherein:
    The protruding portion is at least a part of the core material.
  10. The plate-like member according to claim 6, wherein:
    The tensile strength of the core material is 10 MPa-600 MPa;
    The Young's modulus of the core material is 0.2GPa-50GPa;
    The density of the core material is 0.1 g / cm 3 to 3 g / cm 3 .
  11. The plate-like member according to claim 10, wherein
    The tensile strength of the core material is 30 MPa-200 MPa;
    The Young's modulus of the core material is 2GPa-18GPa;
    The density of the core material is 0.2 g / cm 3 to 1 g / cm 3 .
  12. The plate-like member according to claim 1, wherein:
    The connecting portion has at least one concave portion;
    The recessed portion is a groove extending into the substrate and having an opening only on the side end surface.
  13. The plate-like member according to claim 12, wherein:
    The height of the concave portion is 10% -70% of the thickness of the substrate; wherein the thickness of the substrate is the distance between the upper surface and the lower surface; the height of the concave portion is the An opening size of the recessed portion in a direction perpendicular to the substrate.
  14. The plate-like member according to claim 12, wherein:
    The depth of the recessed portion is 0.1-10 times the thickness of the substrate; wherein the thickness of the substrate is the distance between the upper surface and the lower surface; the depth of the recessed portion is the recess The size of the entrance portion extending into the substrate in a direction parallel to the substrate.
  15. The plate-like member according to claim 12, wherein:
    The recessed portion includes the opening and a bottom surface opposite to the opening, and a first inner surface and a second inner surface opposite to the first inner surface; wherein,
    The opening extends along at least a portion of an edge of the substrate;
    The first inner surface is in contact with the opening and the bottom surface; the second inner surface is in contact with the opening and the bottom surface.
  16. The plate-like member according to claim 15, wherein:
    The first inner surface and a plane parallel to the substrate have a first angle;
    A second included angle between the second inner surface and a plane parallel to the substrate;
    An angle value of the first included angle or the second included angle is 0 ° -45 °.
  17. The plate-like member according to claim 16, wherein:
    The distance between the first inner surface and the second inner surface at the bottom surface is less than the distance between the two at the opening.
  18. The plate-like member according to claim 12, wherein:
    The longitudinal section of the recessed portion has an arbitrary shape.
  19. The plate-like member according to claim 12, wherein:
    The recessed portion is a continuous groove extending along an edge of the substrate; or,
    The recessed portions are a plurality of grooves separated from each other extending along the edge of the substrate.
  20. The plate-like member according to claim 1, wherein:
    The substrate edge contour includes a straight line; or,
    The edge contour of the substrate is an arbitrary curve; or,
    The edge contour of the substrate has a notch having an arbitrary shape and penetrating the upper surface and the lower surface.
  21. The plate-like member according to claim 1, wherein:
    The substrate is a fiber-reinforced resin sheet.
  22. The plate-like member according to claim 1, wherein:
    The substrate is a fiber reinforced sandwich structure plate;
    The substrate includes a core material and at least one fiber-reinforced surface layer.
  23. The plate-like member according to claim 1, wherein:
    The thickness of the substrate is 0.1mm-10mm.
  24. A composite molded component, comprising:
    Sheet members and edging members;
    The plate member includes an upper surface and a lower surface, and a side end surface distributed around a substrate edge between the upper surface and the lower surface; the side end surface has a connection portion;
    The connecting portion extends along at least a portion of an edge of the substrate, and a height of the connecting portion is less than a thickness of the substrate; wherein the thickness of the substrate is a distance between the upper surface and the lower surface; A height of the connection portion is a distance between a vertex and a bottom point of the connection portion in a direction perpendicular to the substrate; and
    At least a portion of the connection portion is protruded outward from the substrate, or at least a portion of the connection portion is recessed into the substrate;
    At least a part of the hemming member is combined with a connection portion of the sheet member.
  25. The composite molded member according to claim 24, wherein
    The material of the hemming member is at least one of the following materials: a thermoplastic material, a thermosetting material, a rubber material, a metal material, a ceramic material, or a glass material.
  26. A method for manufacturing a composite molded component, comprising:
    Preparing a substrate;
    A connecting portion is processed at a side end surface of the substrate; a height of the connecting portion is smaller than a thickness of the substrate; wherein the thickness of the substrate is a distance between an upper surface of the substrate and a lower surface of the substrate; The height is a distance between a vertex and a bottom point of the connection portion in a direction perpendicular to the substrate; and at least a portion of the connection portion projects outward from the substrate, or at least a portion of the connection portion faces A depression in the substrate;
    Wrap or fill the connecting portion with a hemming material, and wrap at least the side end surface of the substrate to form a hemming member.
  27. The manufacturing method according to claim 26, wherein processing the connecting portion at a side end surface of the substrate comprises:
    Continuous protrusions parallel to the substrate are processed along the edges of the substrate; or,
    A plurality of protrusions separated from each other parallel to the substrate are processed along the edge of the substrate.
  28. The manufacturing method according to claim 27, wherein processing the connecting portion at a side end surface of the substrate further comprises:
    Machining a plurality of depressions on the convex first outer surface and the second outer surface; or
    Processing a plurality of holes on the protrusions penetrating the first outer surface and the second outer surface;
    Wherein, the first outer surface is a surface where the protrusion extends in a direction parallel to the substrate, and the second outer surface is a surface opposite to the first outer surface.
  29. The manufacturing method according to claim 26, wherein processing the connecting portion at a side end surface of the substrate comprises:
    Continuous grooves extending along the edge of the substrate are processed on the side end surface of the substrate; or,
    A plurality of grooves extending along the edge of the substrate and separated from each other are processed on the side end surface of the substrate.
  30. The manufacturing method according to claim 29, wherein processing the connecting portion at the side end surface of the substrate further comprises:
    Processing the groove to have an opening and a bottom surface opposite to the opening, and a first inner surface and a second inner surface opposite to the first inner surface, wherein the first inner surface and the opening Connected to the bottom surface, the second inner surface is connected to the opening and the bottom surface;
    In the groove, a distance between the first inner surface and the second inner surface at the bottom surface is smaller than a distance between the two at the opening.
PCT/CN2018/096356 2018-07-20 2018-07-20 Sheet-shaped member, composite molded member and fabrication method for composite molded member WO2020014936A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/096356 WO2020014936A1 (en) 2018-07-20 2018-07-20 Sheet-shaped member, composite molded member and fabrication method for composite molded member

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/CN2018/096356 WO2020014936A1 (en) 2018-07-20 2018-07-20 Sheet-shaped member, composite molded member and fabrication method for composite molded member
CN201880000854.6A CN109076713A (en) 2018-07-20 2018-07-20 A kind of manufacturing method of tabular component, composite molding component and composite molding component
CN201822259726.3U CN210026512U (en) 2018-07-20 2018-12-29 Composite member

Publications (1)

Publication Number Publication Date
WO2020014936A1 true WO2020014936A1 (en) 2020-01-23

Family

ID=64789385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/096356 WO2020014936A1 (en) 2018-07-20 2018-07-20 Sheet-shaped member, composite molded member and fabrication method for composite molded member

Country Status (2)

Country Link
CN (2) CN109076713A (en)
WO (1) WO2020014936A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106358393A (en) * 2015-07-15 2017-01-25 汉达精密电子(昆山)有限公司 Two-material combined product
CN106696312A (en) * 2017-01-25 2017-05-24 合肥联宝信息技术有限公司 Embedded forming technology for composite board, composite board and forming milling cutter
CN107041087A (en) * 2015-07-15 2017-08-11 汉达精密电子(昆山)有限公司 Extra quality combination product
CN206892783U (en) * 2017-07-26 2018-01-16 嘉瑞科技(惠州)有限公司 A kind of ultra-thin bottom of tablet personal computer

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005203438A (en) * 2004-01-13 2005-07-28 Mitsubishi Cable Ind Ltd Radio wave absorber
BE1016394A3 (en) * 2004-12-23 2006-10-03 Flooring Ind Ltd Laminate floor panel has embossed portions provided in surface over which decor extends, continuing up to underlying substrate
CN101835596B (en) * 2007-09-11 2012-08-29 东丽株式会社 Composite shaped article and process for manufacturing the same
JP2009239211A (en) * 2008-03-28 2009-10-15 Mitsubishi Cable Ind Ltd Radiowave absorption sheet and method of installing the same
EP2343185B1 (en) * 2008-10-31 2016-03-02 Kyoraku CO., LTD Sandwich panel and method of forming the sandwich panel
CN202826557U (en) * 2012-10-30 2013-03-27 威海中复西港船艇有限公司 Interlayer composite board with core material with saw-toothed connection structure
CN103786375A (en) * 2012-10-30 2014-05-14 威海中复西港船艇有限公司 Composite board with interlayer structure, and processing technology thereof
CN104854974A (en) * 2012-12-19 2015-08-19 户田工业株式会社 Electromagnetic interference suppression body
CN204414676U (en) * 2014-10-21 2015-06-24 联想(北京)有限公司 A kind of composite board and electronic equipment
CN205889435U (en) * 2016-07-26 2017-01-18 厦门金牌厨柜股份有限公司 From panel of borduring of buckling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106358393A (en) * 2015-07-15 2017-01-25 汉达精密电子(昆山)有限公司 Two-material combined product
CN107041087A (en) * 2015-07-15 2017-08-11 汉达精密电子(昆山)有限公司 Extra quality combination product
CN106696312A (en) * 2017-01-25 2017-05-24 合肥联宝信息技术有限公司 Embedded forming technology for composite board, composite board and forming milling cutter
CN206892783U (en) * 2017-07-26 2018-01-16 嘉瑞科技(惠州)有限公司 A kind of ultra-thin bottom of tablet personal computer

Also Published As

Publication number Publication date
CN109076713A (en) 2018-12-21
CN210026512U (en) 2020-02-07

Similar Documents

Publication Publication Date Title
JP6025578B2 (en) Manufacturing method of housing having knitted pattern, and housing manufactured using the method
US4647329A (en) Manufacture of parabolic antennas
JP5034502B2 (en) Sandwich structure and integrated molded body using the same
CA2134257C (en) Ball grid array plastic package
TWI304321B (en) Layered products, electromagnetic wave shielding molded articles and method for production thereof
US8654029B2 (en) Housing of portable electronic device and method for making the same
AU2003239177B2 (en) Carbon fiber reinforced plastic bipolar plates with continuous electrical pathways
JP4558091B1 (en) Fiber-reinforced molded body and method for producing the same
CN1212051C (en) Electromagnetic interference shielding device
CN104168730A (en) Shell, electronic device employing the shell and manufacturing method of the shell
US20090233044A1 (en) Carbon Fiber Composite Material, Product and Method
EP1077127A2 (en) Composite material having an intermediate layer comprising at least a fiber mat made of regenerable natural fibers
JP4670532B2 (en) Composite molded product
CN101774281B (en) Production method of preimpregnated thermoplastic resin structure
US8142880B2 (en) Housing for electronic device, mold for making the housing, and method for making the housing
JP5648377B2 (en) Resin gear and manufacturing method thereof
KR20060134097A (en) Composite part
US9694520B2 (en) Method of manufacturing portable electronic device
TW201212737A (en) Wiring board
CN101835596B (en) Composite shaped article and process for manufacturing the same
EP1145841A4 (en) Reinforcing fiber base for composite material
KR101936609B1 (en) Housing for electronic device and manufacturing method thereof
CN102548283B (en) Shell structure and manufacturing method of electronic device shell structure
KR20120125250A (en) Injection molded article and production method thereof
JP2010522396A (en) Step card and step card manufacturing method