CN106657446A - In-mold injection molding combined shell of aluminium alloy welding part and manufacturing process - Google Patents
In-mold injection molding combined shell of aluminium alloy welding part and manufacturing process Download PDFInfo
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- CN106657446A CN106657446A CN201510710855.8A CN201510710855A CN106657446A CN 106657446 A CN106657446 A CN 106657446A CN 201510710855 A CN201510710855 A CN 201510710855A CN 106657446 A CN106657446 A CN 106657446A
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Abstract
The invention discloses an in-mold injection molding combined shell of an aluminium alloy welding part and a manufacturing process. The combined shell includes an aluminium alloy welding part and a plastic connecting piece. The aluminium alloy welding part is formed by an aluminium alloy outer frame and an aluminium alloy middle plate through laser welding, and the plastic connecting piece and the aluminium alloy welding part are composited into a whole through in-mold nanometer injection molding. The aluminium alloy outer frame is manufactured by 5, 6, 7-series aluminium alloy sections through CNC processing, and the inner side of the aluminium alloy outer frame is provided with continuous welding positions and spot welding positions. The aluminium alloy middle plate is manufactured through die casting. Compared with an all-CNC process, the manufacturing process provided by the invention reduces the CNC processing amount. Compared with an all-die-casting process, the outer frame of the in-mold injection molding combined shell provided by the invention adopts the same material as the all-CNC process instead of cast aluminium, and thus the surface of the outer frame is finer and meets RF and antenna design requirements. Laser welding and nanometer injection molding combined technology enables an injection molding part to cover a welding position, and the combined shell is high in structural strength and low in manufacturing cost.
Description
Technical field
The invention belongs to the metal casing manufacture field in mobile communication terminal device, and in particular to a kind of in-mould injection combination shells of aluminum alloy welding fitting and its manufacturing process.
Background technology
Shells as mobile communication terminal device in necessary component, the material of the shells of different mobile phones and flat board presents variation, frequently with stainless steel, aluminium alloy, carbon fiber etc. as basic housing.In recent years, aluminium alloy shells has become the preferred option of high-end handsets.Existing aluminium alloy shells manufacture mainly has two kinds of techniques：One kind is full CNC techniques, i.e., carry out CNC machine-shapings to one piece of aluminium alloy whole plate.Because simultaneously shells has structure function and electric function, such as metal antenna, the CNC processing capacities of the method are very big, and the utilization rate of aluminium alloy is low, and waste is big, cause its manufacturing cost to remain high；Another kind is that die casting integral forming technique, i.e. metal frame and metal medium plate obtain the structural member of needs by die casting aluminum die cast, then by CNC finishing impressions.Because the method can only adopt die casting aluminum, thus result in that metal outer frame is coarse, texture is poor, the low shortcoming of product yield.
The content of the invention
In order to solve the above problems, the present invention combines the advantage of both the above technique, overcomes respective shortcoming, discloses the in-mould injection combination shells and manufacturing process of a kind of aluminum alloy welding fitting.For the high shortcoming of full CNC techniques manufacturing cost, the aluminum alloy outer frame of the present invention is fabricated from fine and close aluminum alloy materials by CNC, and plate is manufactured by die casting in aluminium alloy, thus reduces CNC processing capacities；For the shortcoming of the metal outer frame texture difference of die casting integral forming technique, the aluminum alloy outer frame of the present invention is adopted and full CNC techniques identical aluminum alloy materials, and metal medium plate is manufactured using die casting, and it is connected as a single entity with housing by laser welding technology.Thus, the metal outer frame texture of the present invention is such as full CNC techniques, and its manufacturing cost is then low than full CNC techniques.
On the other hand, generally need to increase some functional plastic parts on the metal shell of mobile phone and flat board, and plastic cement directly influences the using effect and service life for combining shells with the binding ability of metal shell.Now conventional method is NMT technologies, i.e., metal surface is processed, and increases its binding ability with plastic cement.The present invention causes moulding to cover welding position using laser welding with nanometer injection combination technique, due to the rough surface of welding position, increased its binding ability with plastic cement.
A kind of in-mould injection combination shells of aluminum alloy welding fitting, the combination shells includes aluminum alloy welding fitting and plastic rubber connector, aluminum alloy welding fitting is formed by plate in aluminum alloy outer frame and aluminium alloy by laser welding, plastic rubber connector is combined into one by nanometer injection in mould with aluminum alloy welding fitting, aluminum alloy outer frame is fabricated using fine and close aluminium alloy extrusions by CNC, leave continuous welding position and spot welding position in its inner side, plate is manufactured by die casting in aluminium alloy, moulding is caused to cover welding position using nanometer injection combination technique in laser welding and mould, so that the binding ability of aluminum alloy welding fitting and plastic rubber connector is higher.
Preferably, the aluminum alloy outer frame can be from 5,6,7 serial aluminium section bars, and plate selects die casting aluminum in the aluminium alloy, and the plastic rubber connector of the nanometer injection can be from materials such as PC, PC+GF, PPS, PBT, PA, PEKK.
A kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, it is characterised in that its manufacturing process is comprised the following steps：
a：Aluminium alloy extrusions is processed into aluminum alloy outer frame；
b：Sheet metal forming in aluminium alloy；
c：Plate weld forms aluminum alloy welding fitting in aluminum alloy outer frame and aluminium alloy；
d：Nanometer is molded the combination shells to form aluminum alloy welding fitting in combination with plastic rubber connector in mould;
e:It is surface-treated to combining shells.
Preferably, in step a, optional 5,6, the 7 series alloys section bar of aluminum alloy outer frame material leaves CNC locating and machinings hole, is processed by CNC, and USB holes, earpiece holes, welding position and plastic cement connection position are processed on aluminum alloy outer frame.
Preferably, in step b, plate selects die casting aluminum in aluminium alloy, is processed using stamping jig or die cast, and forms location hole.
Preferably, the method for the die cast is to inject die casting aluminium molten metal using high pressure, and metal liquid temp is 450～750 DEG C, keeps 150～300 DEG C of mold temperature, and under the effect of the pressure cooled and solidified forms plate in aluminium alloy to Al-alloy metal liquid.
Preferably, in step c, aluminum alloy outer frame is connected as a single entity with plate in aluminium alloy by laser welding, the laser welding includes continuous welding and is spot welded, nanometer micropore is formed on aluminium alloy shells surface by T handling process, the T handling process includes that ultrasonic surface degreasing, acid or alkali remove surface film oxide, etching and forms nano-pore, water cleaning, is dried.
Preferably, in step d, the first plastic cement connection position is left in the inner surface of aluminum alloy outer frame, plate leaves the second plastic cement connection position in aluminium alloy, using inmold injection technique, metal casing is put in injection mold, the fixed mechanism of aluminium alloy shells is provided with die cavity, plastic cement is injected in injection cavity, plastic cement is flowed in first, second plastic cement connection position, and firm screens integrated structure is formed after cooled and solidified.The temperature of injection moulding plastic is 220～350 DEG C, 40～250MPa of injection pressure, and injection moulding process keeps 60～200 DEG C of mold temperature, plastic cement cooled and solidified to form into combination shells.
Preferably, in step e, layer oxide film is formed on combination shells surface by anodic oxidation, and carries out coloring treatment, the multiple colors such as white, black, gold can be formed.
Preferably, between step d and the poly- e of the step, finished to combining shells using Digit Control Machine Tool, inside combination shells button bit is processed, curved surface processing and forming is carried out to aluminum alloy outer frame using side forming cutter, then hot shaping is carried out to combining shells using shaping tool.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention, Fig. 1 provides the schematic diagram that a kind of in-mould injection of aluminum alloy welding fitting combines shells.1 represents aluminum alloy outer frame, and 2 represent plate in aluminium alloy, and 3 represent the continuous welding position in left side, and 4 represent the continuous welding position in right side, and 5 represent plastic rubber connector, and 6 represent upside spot welding position.
Specific embodiment
The invention discloses the in-mould injection combination shells and its manufacturing process of a kind of aluminum alloy welding fitting.With reference to accompanying drawing, the technical scheme in the present invention is clearly and completely described below.Described is only a part of embodiment of the invention, rather than embodiment whole.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made belongs to the scope of protection of the invention.
A kind of in-mould injection combination shells of aluminum alloy welding fitting, the combination shells includes aluminum alloy welding fitting and plastic rubber connector, aluminum alloy welding fitting is formed by plate in aluminum alloy outer frame and aluminium alloy by laser welding, plastic rubber connector is combined into one by nanometer injection in mould with aluminum alloy welding fitting, aluminum alloy outer frame is fabricated using fine and close aluminium alloy extrusions by CNC, leave continuous welding position and spot welding position in its inner side, plate is manufactured by die casting in aluminium alloy, moulding is caused to cover welding position using nanometer injection combination technique in laser welding and mould, so that the binding ability of aluminum alloy welding fitting and plastic rubber connector is higher.
As shown in figure 1, the aluminum alloy welding fitting includes plate 2 in aluminum alloy outer frame 1 and embedding aluminium alloy in the inner.Welding position is provided with the aluminum alloy welding fitting, the welding position is located at respectively the side of plate 2 in the medial surface of aluminum alloy outer frame 1 and the aluminium alloy, the welding position includes the continuous welding position 4 of the continuous welding position 3, right side in left side and upside spot welding position 6, and the plastic rubber connector 5 can be the materials such as PC, PC+GF, PPS, PBT, PA, PEKK.
A kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, and its manufacturing process is comprised the following steps：
a：Aluminium alloy extrusions is processed into aluminum alloy outer frame；
b：Sheet metal forming in aluminium alloy；
c：Plate weld forms aluminum alloy welding fitting in aluminum alloy outer frame and aluminium alloy；
d：Nanometer is molded the combination shells to form aluminum alloy welding fitting in combination with plastic rubber connector in mould;
e:It is surface-treated to combining shells.
Preferably, in step a, optional 5,6, the 7 series alloys section bar of aluminum alloy outer frame material leaves CNC locating and machinings hole, is processed by CNC, and USB holes, earpiece holes, welding position and plastic cement connection position are processed on aluminum alloy outer frame.
Preferably, in step b, plate selects die casting aluminium gold material in aluminium alloy, is processed using stamping jig or die cast, and forms location hole.
Preferably, the method for the die cast is to inject die casting aluminium molten metal using high pressure, and metal liquid temp is 450～750 DEG C, keeps 150～300 DEG C of mold temperature, and under the effect of the pressure cooled and solidified forms plate in aluminium alloy to Al-alloy metal liquid.
Preferably, in step c, aluminum alloy outer frame is connected as a single entity with plate in aluminium alloy by laser welding, the laser welding includes continuous welding and is spot welded, nanometer micropore is formed on aluminium alloy shells surface by T handling process, the T handling process includes that ultrasonic surface degreasing, acid or alkali remove surface film oxide, etching and forms nano-pore, water cleaning, is dried.
Preferably, in step d, the first plastic cement connection position is left in the inner surface of aluminum alloy outer frame, plate leaves the second plastic cement connection position in aluminium alloy, using inmold injection technique, metal casing is put in injection mold, the fixed mechanism of aluminium alloy shells is provided with die cavity, plastic cement is injected in injection cavity, plastic cement is flowed in first, second plastic cement connection position, and firm screens integrated structure is formed after cooled and solidified.The temperature of injection moulding plastic is 220～350 DEG C, 40～250MPa of injection pressure, and injection moulding process keeps 60～200 DEG C of mold temperature, plastic cement cooled and solidified to form into combination shells.
Preferably, in step e, layer oxide film is formed on combination shells surface by anodic oxidation, and carries out coloring treatment, the multiple colors such as white, black, gold can be formed.
Preferably, between step d and the poly- e of the step, finished to combining shells using Digit Control Machine Tool, inside combination shells button bit is processed, curved surface processing and forming is carried out to aluminum alloy outer frame using side forming cutter, then hot shaping is carried out to combining shells using shaping tool.The test data that the present embodiment forms product is as follows：
From test data, the adhesion using aluminum alloy welding fitting and plastic rubber connector in the product of present invention manufacture is strong, is resistant to high and low temperature alternative, salt fog and high humidity environment, and weatherability is strong, and every test index reaches requirement.
It is an advantage of the current invention that：1st, the advantage of full CNC techniques and die casting integral forming technique both techniques is combined, respective shortcoming is overcome；2nd, compared with full CNC techniques, plate is manufactured by die casting in the aluminium alloy of the present invention, so as to reduce CNC processing capacities and aluminium alloy waste；3rd, compared with die casting integral forming technique, the aluminum alloy outer frame of the present invention is adopted and full CNC techniques identical aluminum alloy materials, and appearance tactile impression is identical with full CNC techniques；4th, plate in aluminum alloy outer frame and aluminium alloy is connected as a single entity by laser welding technology, disclosure satisfy that RF and Antenna Design requirement；5th, moulding is caused to cover welding position using laser welding and nanometer injection combination technique, combination shells structural strength is high, and low cost of manufacture.
Above content be combine specific preferred embodiment the present invention will be described in further detail, it is impossible to assert the present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, simple deduction or replace are carried out, should all be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of in-mould injection of aluminum alloy welding fitting combines shells, it is characterized in that, the combination shells includes aluminum alloy welding fitting and plastic rubber connector, aluminum alloy welding fitting is formed by plate in aluminum alloy outer frame and aluminium alloy by laser welding, plastic rubber connector is combined into one by nanometer injection in mould with aluminum alloy welding fitting, aluminum alloy outer frame is fabricated using fine and close aluminium alloy extrusions by CNC, leave continuous welding position and spot welding position in its inner side, plate is manufactured by die casting in aluminium alloy, moulding is caused to cover welding position using nanometer injection combination technique in laser welding and mould, so that the binding ability of aluminum alloy welding fitting and plastic rubber connector is higher.
2. according to claim 1 a kind of in-mould injection of aluminum alloy welding fitting combines shells, it is characterized in that, the aluminum alloy outer frame can be from 5,6,7 serial aluminium section bars, plate selects die casting aluminum in the aluminium alloy, and the plastic rubber connector of the nanometer injection can be from materials such as PC, PC+GF, PPS, PBT, PA, PEKK.
3. a kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, it is characterised in that its manufacturing process is comprised the following steps：
a：Aluminium alloy extrusions is processed into aluminum alloy outer frame；
b：Sheet metal forming in aluminium alloy；
c：Plate weld forms aluminum alloy welding fitting in aluminum alloy outer frame and aluminium alloy；
d：Nanometer is molded the combination shells to form aluminum alloy welding fitting in combination with plastic rubber connector in mould;
e:It is surface-treated to combining shells.
4. according to claim 3 a kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, it is characterized in that, in step a, optional 5,6, the 7 series alloys section bar of aluminum alloy outer frame material, leave CNC locating and machinings hole, processed by CNC, USB holes, earpiece holes, welding position and plastic cement connection position are processed on aluminum alloy outer frame.
5. according to claim 3 a kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, it is characterised in that in step b, and plate selects die casting aluminum in aluminium alloy, is processed using stamping jig or die cast, and forms location hole.
6. a kind of in-mould injection of aluminum alloy welding fitting according to claim 5 combines the manufacturing process of shells, it is characterized in that, the method of the die cast is, die casting aluminium molten metal is injected using high pressure, metal liquid temp is 450～750 DEG C, 150～300 DEG C of mold temperature is kept, under the effect of the pressure cooled and solidified forms plate in aluminium alloy to Al-alloy metal liquid.
7. according to claim 3 a kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, it is characterized in that, in step c, aluminum alloy outer frame is connected as a single entity with plate in aluminium alloy by laser welding, the laser welding includes continuous welding and is spot welded, nanometer micropore is formed on aluminium alloy shells surface by T handling process, the T handling process includes that ultrasonic surface degreasing, acid or alkali remove surface film oxide, etching and forms nano-pore, water cleaning, is dried.
8. according to claim 3 a kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, it is characterized in that, in step d, the first plastic cement connection position is left in the inner surface of aluminum alloy outer frame, plate leaves the second plastic cement connection position in aluminium alloy, using inmold injection technique, aluminum alloy welding fitting is put in injection mold, the fixed mechanism of aluminum alloy welding fitting is provided with die cavity, plastic cement is injected in injection cavity, plastic cement flows into first, in second plastic cement connection position, firm screens integrated structure is formed after cooled and solidified, the temperature of the injection moulding plastic is 220～350 DEG C, 40～250MPa of injection pressure, injection moulding process keeps 60～200 DEG C of mold temperature, plastic cement cooled and solidified is formed to be combined to form with aluminum alloy welding fitting and combines shells.
9. according to claim 3 a kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, characterized in that, in step e, layer oxide film is formed on combination shells surface by anodic oxidation, and coloring treatment is carried out, the multiple colors such as white, black, gold can be formed.
10. according to claim 3 a kind of in-mould injection of aluminum alloy welding fitting combines the manufacturing process of shells, it is characterized in that, between step d and the poly- e of the step, finished to combining shells using Digit Control Machine Tool, button bit is processed inside combination shells, curved surface processing and forming is carried out to aluminum alloy outer frame using side forming cutter, then hot shaping is carried out to combining shells using shaping tool.
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| CN201510710855.8A CN106657446B (en) | 2015-10-28 | 2015-10-28 | In-mold injection molding combined shell piece of aluminum alloy welding piece and manufacturing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107088987A (en) * | 2017-06-21 | 2017-08-25 | 王强 | Phone housing manufacturing process |
| CN108422084A (en) * | 2018-01-26 | 2018-08-21 | 武汉华工激光工程有限责任公司 | Board fabrication method in mobile phone |
| CN108890136A (en) * | 2018-06-08 | 2018-11-27 | 大族激光科技产业集团股份有限公司 | The weld seam forming method and device of plate and frame in a kind of mobile phone |
| CN109676322A (en) * | 2018-10-23 | 2019-04-26 | 努比亚技术有限公司 | A kind of production method of center, center, terminal rear shell and terminal |
| CN109676862A (en) * | 2018-12-31 | 2019-04-26 | 蔡振豪 | A kind of manufacture of casing of communication terminal product |
| CN109885130A (en) * | 2019-03-11 | 2019-06-14 | 通达宏泰科技(苏州)有限公司 | A kind of light and thin notebook computer casing production method and light and thin notebook computer casing |
| CN111318854A (en) * | 2018-12-14 | 2020-06-23 | 华孚精密科技(马鞍山)有限公司 | Manufacturing method of magnesium/aluminum alloy part |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088987A (en) * | 2017-06-21 | 2017-08-25 | 王强 | Phone housing manufacturing process |
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| CN111318854A (en) * | 2018-12-14 | 2020-06-23 | 华孚精密科技(马鞍山)有限公司 | Manufacturing method of magnesium/aluminum alloy part |
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| CN109885130A (en) * | 2019-03-11 | 2019-06-14 | 通达宏泰科技(苏州)有限公司 | A kind of light and thin notebook computer casing production method and light and thin notebook computer casing |
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