TW201703985A - Metal component and plastic bonding method and structure the same - Google Patents

Abstract

A metal component and plastic bonding structure includes a metal component, a metal interface layer and a plastic element. The metal component is having a first surface. The metal interface layer is having a upper surface and a bottom surface. The bottom surface covering the first surface and the metal interface layer sticking the metal sheet body. The metal interface layer arranges a plurality of holes. The holes in the bottom surface on one side of each connected. Wherein a part the plastic element through the holes and fixing in the first surface and the bottom surface, the other part of the plastic element covering the metal interface layer on the upper surface.

Description

Metal member and plastic joining method and structure thereof

The present invention relates to a joining technique of a composite material, and more particularly to a joining method of a metal member and a plastic and a structure thereof.

With the continuous advancement and development of technology, the application of composite materials in various products has become increasingly common, such as the casings and mechanical parts of mobile phones, tablet computers, notebook computers, etc.; fan blades, automobile and motorcycle parts, medical equipment, Appliance shells or spare parts, helmets; steam locomotive exterior parts and internal structural parts, aircraft interior and exterior parts, propellers, general hull structural parts, military steel helmets, bulletproof parts, sanitary equipment, building materials, etc. are numerous. The finished product produced by the product not only has the advantages of light weight, thinness, good appearance and the like, but also can effectively reduce electromagnetic wave leakage, especially the joint problem of metal components and plastics is an important position of the composite material.

It is conventionally used for the bonding of metal members and plastics. The most widely used method is chemical etching. First, a surface that does not need to be etched is plated and sealed, and then the entire part is immersed in chemicals, using chemicals. The other surface of the metal member is slowly eroded to form a hole, and then the plastic is coated on the metal member having the hole, and the plastic is bonded after being cured.

However, conventionally used for joining metal members and plastics has the following problems, whether it is electroplating or etching, the processing speed is quite slow and lengthy, and it is not economical, and the liquid used for such plating or etching, The follow-up will cause serious environmental problems. The holes formed by the chemical etching process are not only small in aperture but also shallow in depth, so that the bonding strength between the metal member and the plastic cannot be effectively improved, and it can only be used for a small area of local bonding or a low bonding strength. Each of the holes is formed independently of each other. In the process of entering the hole, the plastic is often unable to be inserted due to poor exhaust gas, and the joint force is insufficient and the metal member cannot be effectively joined to a large area.

An object of the present invention is to provide a metal member and a plastic joining method and a structure thereof which can not only improve the bonding fastness of the metal member and the plastic layer, but also simplify the process and shorten the manufacturing time.

In order to achieve the above object, the present invention provides a metal member and plastic joining method, the steps comprising: a) preparing a metal interface layer provided with a plurality of holes; b) disposing the metal interface layer on a metal member ; c) fixing the metal interface layer to the metal member in a thermal bonding manner; and d) forming a plastic overlying the metal interface layer and curing into a plastic layer, wherein a portion of the plastic passes through each The hole is fixed between the metal member and the metal interface layer, and the other portion of the plastic covers the metal interface layer.

In order to achieve the above object, the present invention provides a metal member and a plastic joint structure, comprising a metal member, a metal interface layer and a plastic layer, the metal member having a first surface; the metal interface layer having an upper surface and Forming a lower surface on the back surface of the upper surface, the lower surface facing the first surface, the metal interface layer being provided with a plurality of holes, each of the holes being in communication with each other on one side of the lower surface; the plastic layer corresponding to the metal The interface layer is laid, wherein a portion of the plastic layer is fixed between the first surface and the lower surface through each of the holes, and another portion of the plastic layer covers the upper surface of the metal interface layer.

The invention also has the following effects: when the plastics are sequentially applied to the metal interface layer by the mutual communication of the respective punching positions on the lower surface side, the gas existing between the metal member and the metal interface layer is discharged one by one, thereby increasing the plastic. The bonding strength of the layer to the metal member. By using the perforations to form a shape that is small and large, the plastic can form a barb structure after being hardened through the perforations, and can not only withstand the shock, impact, heat and cold shrinkage caused by the long-term environment, but also maintain the whole. The strength and integrity of the structure. The production method of the invention not only can be rapidly mass-produced, but also greatly reduces the cost, and the finished product produced by the invention has the advantages of light weight, thinness, good appearance texture and reduced electromagnetic wave leakage.

10‧‧‧Metal components

11‧‧‧ first surface

12‧‧‧ second surface

20‧‧‧Metal interface layer

21‧‧‧ plates

22‧‧‧ upper surface

23‧‧‧ Lower surface

24‧‧‧Perforation

25‧‧‧Bumps

D1, D2‧‧‧ aperture

20a‧‧‧woven net

30‧‧‧ plastic

30a‧‧‧Plastic layer

5‧‧‧Remote control housing

a~d‧‧‧step

Figure 1 is a flow chart of the method of the present invention.

2 is an external view of a metal interface layer of the present invention.

Figure 3 is a cross-sectional view showing the metal interface layer and the metal member of the present invention in combination.

Figure 4 is a cross-sectional view of the plastic filled metal interface layer and metal member of the present invention.

Figure 5 is a cross-sectional view showing the combination of the plastic cured plastic layer of the present invention and the metal interface layer and the metal member.

Figure 6 is a remote control housing produced by the present invention.

Figure 7 is an external view of another embodiment of the metal interface layer of the present invention.

The detailed description and technical content of the present invention are set forth in the accompanying drawings.

Referring to FIG. 1 and FIG. 5, the present invention provides a metal member and a plastic bonding method and a structure thereof, wherein the method steps include:

a) a metal interface layer 20 having a plurality of holes; as shown in FIG. 2 and FIG. 3, the metal interface layer 20 may be a light metal material such as an aluminum alloy, a magnesium alloy or an aluminum-magnesium alloy. The metal interface layer 20 is a thin plate having a thickness of between 0.05 and 0.2 mm, wherein the thickness is preferably 0.1 mm. The metal interface layer 20 has a plate 21 and a plate. An upper surface 22 is formed on the upper side of the sheet 21, a lower surface of the sheet 21 and a back surface 22 are formed with a lower surface 23, and a plurality of holes penetrating the upper surface 22 and the lower surface 23 are spaced apart from the sheet 21, The hole of the embodiment is a conical hole 24, and an aperture D1 of each of the perforations 24 on the side of the lower surface 23 is larger than an aperture D2 on the side of the upper surface 22. Further, a plurality of bumps 25 formed on the lower surface 23 are punched in the sheet piece 21, and the bumps 25 are arranged at intervals. In addition, each of the bumps 25 may also be extended from the lower surface 23 by molding. In addition, the metal interface layer 20 can be bent in accordance with actual use requirements.

b) the metal interface layer 20 is disposed on a metal member 10; as shown in FIG. 3 and FIG. 4, the metal member 10 in this step may be a metal such as an aluminum alloy, a magnesium alloy, an aluminum-magnesium alloy or a stainless steel. a material which can be cast or forged to form a non-flat plate having a thickness of between 0.5 and 2 mm, wherein the thickness is preferably 1 mm, and the metal member 10 is The utility model can be applied to a mobile phone, a tablet computer, a notebook computer or an outer casing of a home appliance such as a remote controller, an oven, a microwave oven, etc. The metal member 10 has a first surface 11 and a second surface 12 formed on the back of the first surface 11 . The metal interface layer 20 is formed on the metal member 10 with its lower surface 23 stacked toward the first surface 11.

c) fixing the metal interface layer 20 to the metal member 10 in a thermal bonding manner; as shown in FIG. 3, the thermal bonding in this step may be resistance welding or ultrasonic welding, etc., using the bumps. 25 is in contact with the first surface 11 of the metal member 10, and after heating the metal member 10 and the metal interface layer 20, a higher temperature rise is formed, and the metal interface layer 20 is fixed to the metal member 10, so the metal interface The layer 20 and the metal member 10 are multi-pointed rather than fully affixed so that the perforations 24 can communicate with each other on one side of the lower surface 23. In addition, the ultrasonic welding is achieved by the frictional heat generated by the contact of each of the bumps 25 with the first surface 11.

d) a plastic 30 is formed on the metal interface layer 20 in a blanket manner and cured into a plastic layer 30a, and a portion of the plastic 30 is fixed to the metal member 10 and the metal interface layer 20 through the holes. Another portion of the plastic 30 covers the metal interface layer 20. Referring to FIG. 4 and FIG. 5, the plastic 30 in this step may be a plastic, artificial or natural resin material, and may be coated on the metal interface layer 20 by in-mold injection or injection molding and solidified into a plastic layer. 30a, a portion of the plastic 30 is fixed between the first surface 11 of the metal member 10 and the lower surface 23 of the metal interface layer 20 through the respective through holes 24, and the other portion of the plastic 30 is overlaid on the metal interface layer 20. Surface 22.

Referring to FIG. 5 and FIG. 6 , the present invention provides a metal member and a plastic joint structure, which can be a remote control housing 5 , including a metal member 10 , a metal interface layer 20 , and a plastic layer 30 a . A first surface 11 and a second surface 12 formed on the back side of the first surface 11; the metal interface layer 20 has an upper surface 22 and a lower surface 23 formed on the back surface of the upper surface 22, the lower surface 23 corresponding to the first surface 11 is provided, the metal interface layer 20 is provided with a plurality of perforations 24, each of which is in communication with each other on one side of the lower surface 23; the plastic layer 30a is laid on the metal interface layer 20 and the metal member 10 corresponding to the position of the metal interface layer 20, a part of which The plastic layer 30a is fixed between the first surface 11 and the lower surface 23 through the respective through holes 24, and the other portion of the plastic layer 30a covers the upper surface 22 of the metal interface layer 20.

Referring to FIG. 7 , the metal interface layer of the present invention may be the same as the above embodiment, or may be a woven mesh 20a as in this embodiment, which is provided with a plurality of meshes, and the meshes are adjacent to each other at the lower side of the woven mesh 20a. They are in communication with each other and are multi-pointed with the aforementioned metal member 10, and thus have the same effects as those of the foregoing embodiments.

In summary, the metal member and the plastic joining method and the structure thereof of the present invention can achieve the intended use purpose, and solve the lack of the prior art, and because of the novelty and the progressiveness, fully meet the requirements of the invention patent application, To file an application in accordance with the Patent Law, please check and grant the patent in this case to protect the rights of the inventor.

10‧‧‧Metal components

11‧‧‧ first surface

12‧‧‧ second surface

20‧‧‧Metal interface layer

21‧‧‧ plates

22‧‧‧ upper surface

23‧‧‧ Lower surface

24‧‧‧Perforation

25‧‧‧Bumps

30a‧‧‧Plastic layer

Claims (16)

A metal component and plastic joining method, the steps of which include:
a) preparing a metal interface layer with a plurality of holes;
b) placing the metal interface layer on a metal member;
c) fixing the metal interface layer to the metal member in a thermally bonded manner;
d) forming a plastic in the metal interface layer and curing into a plastic layer, wherein a part of the plastic is fixed between the metal member and the metal interface layer through the holes, and the other portion of the plastic Plastic covers the metal interface layer. The method of joining metal members and plastics according to claim 1, wherein the holes are a conical perforation, and an aperture of each of the perforations adjacent to the side of the metal member is larger than an aperture away from the side of the metal member. The metal member and plastic joining method of claim 2, wherein the metal interface layer has a plate punched with a plurality of bumps, each of the bumps being formed on a surface of the sheet adjacent to the side of the metal member . The metal member and plastic joining method according to claim 2, wherein the metal interface layer has a plate piece, and a plurality of bumps arranged at intervals are formed on a surface of the plate adjacent to the side of the metal member. The method of joining metal members and plastics according to claim 2, wherein the thermal bonding is a resistance welding or an ultrasonic welding. The metal member and plastic joining method according to claim 1, wherein the metal interface layer is a woven mesh. A metal member and a plastic joint structure, comprising:
a metal member having a first surface;
a metal interface layer having an upper surface and a lower surface formed on the back surface of the upper surface, the lower surface facing the first surface, the metal interface layer being provided with a plurality of holes, each of the holes being located on one side of the lower surface Connected to each other; and a plastic layer corresponding to the location of the metal interface layer, wherein a portion of the plastic layer is secured between the first surface and the lower surface through each of the holes, and the other portion of the plastic layer is covered At the upper surface of the metallic interface layer. The metal member and the plastic joint structure according to claim 7, wherein the hole is a conical hole, and each of the holes has a larger diameter on the lower surface side than a hole on the upper surface side. The metal member and the plastic joint structure according to claim 7, wherein the metal interface layer has a plate, the upper surface is formed on an upper side of the plate, and the lower surface is formed on a lower side of the plate, and the plate is punched. There are a plurality of bumps formed on the lower surface. The metal member and the plastic joint structure according to claim 8, wherein the metal interface layer has a plate, the upper surface is formed on an upper side of the plate, and the lower surface is formed on a lower side of the plate, the lower surface extending Most bumps arranged in a space. The metal member and the plastic joint structure of claim 8, wherein the metal interface layer has a thickness of between 0.05 and 0.2 mm. The metal member and plastic joint structure of claim 11, wherein the metal interface layer has a thickness of 0.1 mm. The metal member and the plastic joint structure of claim 8, wherein the metal member is a non-flat sheet. The metal member and the plastic joint structure of claim 8, wherein the metal member has a thickness of between 0.5 and 2 mm. The metal member and plastic joint structure of claim 14, wherein the metal member has a thickness of 1 mm. The metal member and plastic joint structure of claim 7, wherein the metal interface layer is a woven mesh.