CN106816708B - Metal middle frame and manufacturing method thereof - Google Patents

Metal middle frame and manufacturing method thereof Download PDF

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Publication number
CN106816708B
CN106816708B CN201510861085.7A CN201510861085A CN106816708B CN 106816708 B CN106816708 B CN 106816708B CN 201510861085 A CN201510861085 A CN 201510861085A CN 106816708 B CN106816708 B CN 106816708B
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CN
China
Prior art keywords
metal
frame
strips
strip
adjacent
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CN201510861085.7A
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Chinese (zh)
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CN106816708A (en
Inventor
程鹏
候永强
刘荣华
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东莞酷派软件技术有限公司
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Priority to CN201510861085.7A priority Critical patent/CN106816708B/en
Publication of CN106816708A publication Critical patent/CN106816708A/en
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Publication of CN106816708B publication Critical patent/CN106816708B/en

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Abstract

The invention discloses a metal middle frame and a manufacturing method thereof. The manufacturing method of the metal middle frame comprises the following steps: according to the size of the metal middle frame, punching the metal middle frame, and punching a connecting strip for connecting two adjacent metal strips in the metal middle frame; performing appearance treatment on the formed metal middle frame; and removing the connecting strip in the metal middle frame. According to the invention, all metal strips are processed and formed together in a stamping mode, so that the size error of the metal strips is avoided, and compared with a mode of processing the metal strips by CNC, the processing cost is reduced; the metal strips are connected together through the connecting strips, the overall appearance is processed, and color difference between the metal strips can be avoided.

Description

Metal middle frame and manufacturing method thereof

Technical Field

The invention relates to the field of communication, in particular to a metal middle frame and a manufacturing method thereof.

Background

At present, a metal shell is mostly adopted by a mobile terminal to improve the appearance texture of the mobile terminal. When the mobile terminal adopts the metal shell, the metal shell can be used as a radiation unit of the mobile terminal antenna, however, if the metal shell is used as the antenna radiation unit, the metal shell is required to meet the radio frequency requirement of the antenna, the common method is to design the middle frame in the metal shell into a non-integral structure, namely, the complete middle frame is spliced by a plurality of metal strips, and a radiation gap is reserved between two adjacent metal strips, so that the middle frame meets the radio frequency requirement.

In order to fix two adjacent metal strips together, bosses (commonly called as feet) are arranged at two ends of each metal strip on the inner side of the middle frame, and the two adjacent metal strips are fixed through the bosses to form the complete middle frame. In the prior art, because each metal strip for forming the middle frame is independent, each metal strip is processed in batch by a Computer Numerical Control (CNC) machine, so that the CNC processing cost is high, and the problems of inconsistent color and large size error of the whole middle frame may occur.

Disclosure of Invention

The invention mainly aims to provide a metal middle frame and a manufacturing method thereof, and aims to solve the problems of inconsistent color, error in size and higher cost in the process of separating and processing metal strips in the prior art.

In view of the above technical problems, the present invention is achieved by the following technical solutions.

The invention provides a manufacturing method of a metal middle frame, which comprises the following steps: according to the size of the metal middle frame, punching the metal middle frame, and punching a connecting strip for connecting two adjacent metal strips in the metal middle frame; performing appearance treatment on the formed metal middle frame; and removing the connecting strip in the metal middle frame.

Wherein, according to metal center size, stamping forming metal center to the punching press goes out and is used for connecting the connecting strip of two adjacent metal strips in the metal center includes: according to the size of the metal middle frame, bending the edge of the metal plate into the shape of the metal middle frame; the metal plate is divided into a plurality of metal strips by means of stamping, bosses perpendicular to the metal strips are stamped at two ends of each metal strip, and connecting strips for connecting the bosses of two adjacent metal strips are stamped.

Wherein after removing the connecting strip in the metal middle frame, the method further comprises: rotating the appointed metal strip for 180 degrees along a preset axis; the predetermined axes are: and in the plane of the metal middle frame, the straight line perpendicular to the specified metal strip is formed.

Wherein, the step of performing appearance treatment on the formed metal middle frame comprises the following steps: and carrying out anodic oxidation on the formed metal middle frame.

Wherein, the removing the connecting strip in the metal middle frame comprises: and removing the connecting strip in the metal middle frame in a stamping mode.

Wherein, the removing the connecting strip in the metal middle frame comprises: and removing the connecting strip in the metal middle frame by adopting a Computer Numerical Control (CNC) mode of a machine tool.

The invention also provides a metal middle frame which is manufactured by the manufacturing method of the metal middle frame.

The invention has the following beneficial effects:

according to the invention, all metal strips are processed and formed together in a stamping mode, so that the size error of the metal strips is avoided, and compared with a mode of processing the metal strips by CNC, the processing cost is reduced; the metal strips are connected together through the connecting strips, the overall appearance is processed, and color difference between the metal strips can be avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a flow chart of a method of manufacturing a metal bezel in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of a metal sheet prior to stamping scrap according to an embodiment of the present invention;

FIG. 3 is a schematic view of a stamped and formed metal center according to an embodiment of the invention;

FIG. 4 is a schematic view of a metal middle frame obtained after removing a connecting strip according to an embodiment of the invention;

FIG. 5 is a schematic view of a metal strip rotating according to an embodiment of the present invention;

FIG. 6 is a schematic view of a metal bezel according to an embodiment of the present invention;

reference numerals: 1. metal sheet, 2, metal center, 3, first metal strip, 4, second metal strip, 5, first boss, 6, second boss, 7, connecting strip.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

According to an embodiment of the present invention, there is provided a method of manufacturing a metal bezel. Fig. 1 is a flowchart of a method of manufacturing a metal bezel according to an embodiment of the present invention.

And S110, punching and forming the metal middle frame according to the size of the metal middle frame, and punching connecting strips for connecting two adjacent metal strips in the metal middle frame.

The metal center includes: a plurality of metal strips independent of each other. The plurality of metal strips may form the shape of a metal bezel. Bosses are respectively arranged at two ends of each metal strip, are arranged on the inner side of the metal middle frame and are perpendicular to the metal strips. The lug boss is used for connecting two adjacent metal strips and can also be connected with an antenna contact.

The dimensions of the metal middle frame include: the height, the length and the width of the metal middle frame, the thickness of metal strips forming the metal middle frame, the shape of 4 angles, the position of each metal strip in the metal middle frame, the width of a gap between every two adjacent metal strips, the positions of bosses at two ends of each metal strip, the size of the bosses and the like.

Fig. 2 is a schematic view of a metal plate before press blanking according to an embodiment of the present invention.

Specifically, the thickness of the metal plate 1 is the same as the thickness of the metal strip constituting the metal bezel. According to the size of the metal middle frame, the edge of the metal plate 1 is bent into the shape of the metal middle frame; the metal plate 1 is divided into a plurality of metal strips by means of stamping, bosses vertical to the metal strips are stamped at two ends of each metal strip, and connecting strips for connecting the bosses of two adjacent metal strips are stamped. Further, the metal plate 1 is bent into the outline of the metal middle frame according to the length, width and height of the metal middle frame and the shape of 4 corners of the metal middle frame, that is, the length, width and height are the same as the metal middle frame when viewed from the outer edge of the bent portion; the metal sheet inside the contour, i.e. the part of the metal sheet 1 that is not bent, is perpendicular to the contour; and (4) performing stamping and waste discharge according to the size of each metal strip, the width of a gap between two adjacent metal strips, the size of each boss and the connecting position of the connecting strip, and removing redundant plates in the outline.

Fig. 3 is a schematic view of a stamped and formed metal bezel according to an embodiment of the present invention. The metal middle frame 2 is composed of a first metal strip 3 and a second metal strip 4, two ends of the first metal strip 3 are respectively provided with a first boss 5, two ends of the second metal strip 4 are respectively provided with a second boss 6, and the first boss 5 and the second boss 6 adjacent to the first boss 5 are connected through a connecting strip 7. The connecting strip 7 is connected to the two bosses, and the connecting part of the connecting strip 7 and the two bosses is shown by a dotted line in fig. 3.

Through the stamping treatment of this embodiment, adjacent metal strips are connected together through the connecting strip, constitute metal center 2, and metal center 2 is overall structure.

And step S120, performing appearance treatment on the formed metal middle frame.

The overall appearance of the metal middle frame 2 is processed, so that the finally obtained metal middle frame 2 is ensured to have consistent color, no color difference exists among the metal strips, and the chamfers are consistent.

The appearance treatment is, for example: and carrying out anodic oxidation on the whole formed metal middle frame 2.

And step S130, removing the connecting strip in the metal middle frame.

After appearance treatment, the connecting strip 7 in the metal middle frame 2 is removed in a stamping mode or a CNC (computerized numerical control) mode. Fig. 4 is a schematic diagram of a metal middle frame obtained after removing the connecting strips according to an embodiment of the invention.

Because the bosses on the adjacent metal strips are all positioned in one plane, the radiation performance of the antenna can be influenced, so that in order to ensure the radio frequency requirement of the antenna, after the connecting strip is removed, the appointed metal strip is rotated by 180 degrees along a preset axis, and the metal middle frame 2 for being installed on the terminal is obtained; the preset axis refers to: perpendicular to the straight line of the specified metal strip in the plane of the metal middle frame 2.

FIG. 5 is a schematic illustration of the rotation of a metal strip according to an embodiment of the invention. The second metal strip 4 of this embodiment is a designated metal strip, and the dotted line portion in fig. 5 is a schematic diagram illustrating the rotation of the second metal strip 4.

Fig. 6 is a schematic view of a metal bezel according to an embodiment of the present invention. And finishing the rotation of the second metal strip 4 to obtain the final metal middle frame which can be installed on the terminal.

In fig. 6, a coordinate system is attached, and as can be seen from fig. 5 to 6, a height difference exists between the two bosses in the z-axis direction. Further, when the metal middle frame 2 is designed, in order to enable all metal strips of the metal middle frame 2 to be processed and formed at one time, all bosses are located in one plane, after the connecting strips are removed, the appointed metal strips are rotated, the bosses of two adjacent metal strips are not located in the same plane, and the metal middle frame is guaranteed to meet the radio frequency requirement of the antenna.

The embodiment of the invention adopts a stamping mode to process and form all metal strips together, thereby avoiding the size error of the metal strips, and compared with a mode of processing the metal strips by CNC, the embodiment of the invention reduces the processing cost; according to the embodiment of the invention, the metal strips are connected together through the connecting strips to temporarily form the metal middle frame 2, the appearance of the whole metal middle frame 2 is processed, and the color difference between the metal strips is avoided.

The invention also provides the metal middle frame. The metal middle frame is manufactured by the manufacturing method of the metal middle frame. The metal middle frame comprises a plurality of metal strips, and bosses are arranged at two ends of each metal strip. The metal middle frame can be formed by the metal strips, and a gap meeting the radiation characteristic of the antenna exists between every two adjacent metal strips.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (5)

1. A method for manufacturing a metal middle frame is characterized by comprising the following steps:
according to the size of the metal middle frame, punching the metal middle frame, and punching a connecting strip for connecting two adjacent metal strips in the metal middle frame;
performing appearance treatment on the formed metal middle frame;
removing the connecting strip in the metal middle frame;
rotating the appointed metal strip by 180 degrees along a preset axis, so that the bosses of the two adjacent metal strips are not on the same plane;
the preset axis refers to: a straight line perpendicular to the specified metal strip in the plane of the metal middle frame; according to metal center size, stamping forming metal center to the punching press goes out and is used for connecting the connecting strip of two adjacent metal strips in the metal center includes:
according to the size of the metal middle frame, bending the edge of the metal plate into the shape of the metal middle frame;
the metal plate is divided into a plurality of metal strips by means of stamping, bosses perpendicular to the metal strips are stamped at two ends of each metal strip, and connecting strips for connecting the bosses of two adjacent metal strips are stamped.
2. The method of claim 1, wherein the performing an appearance treatment on the formed metal middle frame comprises:
and carrying out anodic oxidation on the formed metal middle frame.
3. The method of claim 1, wherein said removing said connecting strips from said metal center frame comprises:
and removing the connecting strip in the metal middle frame in a stamping mode.
4. The method of claim 1, wherein said removing said connecting strips from said metal center frame comprises:
and removing the connecting strip in the metal middle frame by adopting a Computer Numerical Control (CNC) mode of a machine tool.
5. A metal middle frame, characterized in that the metal middle frame is manufactured by the manufacturing method of the metal middle frame according to any one of claims 1 to 4.
CN201510861085.7A 2015-11-30 2015-11-30 Metal middle frame and manufacturing method thereof CN106816708B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510861085.7A CN106816708B (en) 2015-11-30 2015-11-30 Metal middle frame and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510861085.7A CN106816708B (en) 2015-11-30 2015-11-30 Metal middle frame and manufacturing method thereof

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CN106816708A CN106816708A (en) 2017-06-09
CN106816708B true CN106816708B (en) 2020-08-14

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Publication number Priority date Publication date Assignee Title
CN109067940A (en) * 2018-06-29 2018-12-21 Oppo广东移动通信有限公司 Center production method, center and electronic equipment

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KR100841225B1 (en) * 2006-11-09 2008-06-26 주식회사 파인디앤씨 Manufacturing method of the housing for lcd module and housing made by the same
CN102076189B (en) * 2010-02-02 2015-09-09 苹果公司 Electronic equipment part, electronic equipment and correlation technique
US8947303B2 (en) * 2010-12-20 2015-02-03 Apple Inc. Peripheral electronic device housing members with gaps and dielectric coatings
CN104551562B (en) * 2014-12-16 2017-02-22 广东欧珀移动通信有限公司 Processing method of metal middle frame mobile phone shell structure
CN104618530A (en) * 2014-12-22 2015-05-13 广东欧珀移动通信有限公司 Medium metal frame for handheld terminal device and manufacturing method of medium metal frame
CN104540364A (en) * 2014-12-30 2015-04-22 天津三星通信技术研究有限公司 Electronic device shell assembly and manufacturing method thereof

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