Die-casting aluminum alloy light-weight backboard and manufacturing method thereof

Abstract

The invention discloses a die-casting aluminum alloy light-weight back plate and a manufacturing method thereof. The die-casting aluminum alloy light-weight back plate comprises a back plate body formed by die-casting an aluminum alloy material. The aluminum alloy material comprises the following components in percentage by weight: 1.0%-2.5% of Cu, 9.5%-11.5% of Si, 0.5%-1.5% of Zn, 0.4%-0.6% of Mn, 0.6%-1.5% of Mg, less than or equal to 2.5% of Fe, 0.010%-0.045% of Sr, 0.1%-0.15% of Mo, 0.07%-0.15% of Sc, less than or equal to 0.25% of impurities and the balance of aluminum and inevitable impurities. And the balance being Al. The die-casting aluminum alloy light-weight backboard has the advantages of being high in strength and light in weight.

Description

Technical Field

[0001] The invention relates to, in particular to, a die-cast aluminum alloy lightweight back plate and a manufacturing method thereof. Background Art

[0002] With the development of LCD technology, the size of display devices (such as smart TVs, smart interactive tablets, conference machines, etc.) is getting bigger and bigger, so the requirements for the overall structural strength of display devices are getting higher and higher. As the core carrier of the entire display device, the strength of the backplane a has an important impact on the quality of the display device. Figure 1 As shown, taking the conference machine as an example, the front frame b, tempered glass c, LCD screen d, optical film e, light bar f, various circuit boards g, back shell h and other materials are all fixed on the back panel a. It can be seen that the back panel a bears the weight of almost all parts. Due to the demand for force strength, the back panels a on the market are currently made of galvanized steel sheet metal stamping. Although they are strong, they are also very heavy, which affects the transportation and installation of display machines.

[0003] In view of the above problems, it is necessary to study a die-cast aluminum alloy lightweight back plate and a manufacturing method thereof, wherein the die-cast aluminum alloy lightweight back plate has the advantages of high strength and light weight. Summary of the invention

[0004] The object of the present invention is to provide a die-cast aluminum alloy lightweight back plate and a manufacturing method thereof, wherein the die-cast aluminum alloy lightweight back plate has the advantages of high strength and light weight.

[0005] In order to achieve the above object, the solution of the present invention is: A die-cast aluminum alloy lightweight back plate, comprising a back plate body die-casted from an aluminum alloy material; the components of the aluminum alloy material include Cu with a weight percentage between 1.0% and 2.5%, Si with a weight percentage between 9.5% and 11.5%, Zn with a weight percentage between 0.5% and 1.5%, Mn with a weight percentage between 0.4% and 0.6%, Mg with a weight percentage between 0.6% and 1.5%, Fe with a weight percentage less than or equal to 2.5%, Sr with a weight percentage between 0.010% and 0.045%, Mo with a weight percentage between 0.1% and 0.15%, Sc with a weight percentage between 0.07% and 0.15%, impurities with a weight percentage less than or equal to 0.25%, and the balance is Al.

[0006] The die-cast aluminum alloy lightweight back panel also includes a plurality of wall-mounted parts matched with the back panel body. The wall-mounted parts include a base connected to the back panel and a wall-mounted column integrally formed with the base. The wall-mounted column is provided with a wall-mounted screw hole.

[0007] The base of the wall hanging part is locked with the back plate body by screws.

[0008] The back plate body has reinforcing ribs that are staggered in transverse and longitudinal directions.

[0009] A method for manufacturing the die-cast aluminum alloy lightweight back plate as described above comprises the following steps: Step 1: Melt the aluminum alloy material and pour it into the back panel forming mold; Step 2: Perform high pressure casting through a die casting machine to solidify the aluminum alloy material in the back plate forming mold to form a back plate body; Step 3: Take out the back panel body and polish and trim it.

[0010] The manufacturing method further includes step 4: locking the plurality of wall-mounted components to the back panel body by means of screws.

[0011] The die-cast aluminum alloy lightweight back panel also includes a plurality of wall-mounted parts matched with the back panel body. The wall-mounted parts include a base connected to the back panel and a wall-mounted column integrally formed with the base. The wall-mounted column is provided with a wall-mounted screw hole.

[0012] The base of the wall hanging part is connected to the back plate body by welding.

[0013] The back plate body has reinforcing ribs that are staggered in transverse and longitudinal directions.

[0014] A method for manufacturing the die-cast aluminum alloy lightweight back plate as described above comprises the following steps: Step 1: Melt the aluminum alloy material and pour it into the back panel forming mold; Step 2: Perform high pressure casting through a die casting machine to solidify the aluminum alloy material in the back plate forming mold to form a back plate body; Step 3: Take out the back panel body and polish and trim it.

[0015] In step three, the back panel body is first taken out, and then a plurality of wall hangings are welded to the back panel body, and finally the back panel body and the wall hangings are polished and trimmed.

[0016] After adopting the above scheme, the back panel body of the present invention is die-casted with aluminum alloy material, so that the back panel body has the advantages of high strength, light weight and good heat dissipation, and thus the die-cast aluminum alloy lightweight back panel of the present invention has the advantages of high strength, light weight and good heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural breakdown diagram of an existing conference machine.

[0018] Figure 2 It is a schematic structural diagram of the die-cast aluminum alloy lightweight back plate of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the wall hanging part of the present invention.

[0020] Description of the background art reference numerals: back panel a, front frame b, tempered glass c, LCD screen d, optical film e, light bar f, circuit board g, rear shell h; Specific implementation method: A die-cast aluminum alloy lightweight back panel A, a back panel body 1, a reinforcing rib 11, a wall hanging part 2, a base 21, a wall hanging column 22, and a wall hanging screw hole 221. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0022] like Figure 2 and Figure 3 As shown, the present invention discloses a die-cast aluminum alloy lightweight back plate A, which includes a back plate body 1 die-casted from an aluminum alloy material; wherein the components of the aluminum alloy material include Cu with a weight percentage between 1.0% and 2.5%, Si with a weight percentage between 9.5% and 11.5%, Zn with a weight percentage between 0.5% and 1.5%, Mn with a weight percentage between 0.4% and 0.6%, Mg with a weight percentage between 0.6% and 1.5%, Fe with a weight percentage less than or equal to 2.5%, Sr with a weight percentage between 0.010% and 0.045%, Mo with a weight percentage between 0.1% and 0.15%, Sc with a weight percentage between 0.07% and 0.15%, impurities with a weight percentage less than or equal to 0.25%, and the remainder is Al; after testing, the density of the aluminum alloy material is 2.7g / cm 3 Since the back panel body 1 is die-casted from aluminum alloy material, the back panel body 1 has the advantages of high strength, light weight, and good heat dissipation, and thus the die-cast aluminum alloy lightweight back panel A of the present invention has the advantages of high strength, light weight, and good heat dissipation.

[0023] In the embodiment of the present invention, the backboard body 1 has reinforcing ribs 11 that are staggered in both horizontal and vertical directions. The arrangement of the reinforcing ribs 11 can effectively improve the strength of the backboard.

[0024] In an embodiment of the present invention, the die-cast aluminum alloy lightweight back panel A of the present invention also includes a plurality of wall-mounted parts 2 matched with the back panel body 1, the wall-mounted parts 2 include a base 21 connected to the back panel and a wall-mounted column 22 integrally formed with the base 21, the base 21 of the wall-mounted part 2 can be locked with the back panel body 1 by screws, so that the wall-mounted part 2 and the back panel body 1 can be detachably connected to facilitate replacement of wall-mounted parts 2 of different specifications, the wall-mounted column 22 is provided with a wall-mounted screw hole 221; the size of the wall-mounted part 2 is small to ensure the light weight of the die-cast aluminum alloy lightweight back panel A of the present invention, the wall-mounted part 2 is used to connect the wall mount so that the display machine can be wall-mounted, wherein the wall-mounted column 22 is provided with a wall-mounted screw hole 221 to facilitate the connection of the wall-mounted part 2 with the wall mount by bolts; the material of the wall-mounted part 2 is metal, preferably aluminum alloy.

[0025] The present invention also provides a method for manufacturing the die-cast aluminum alloy lightweight back plate A as described above, which comprises the following steps: Step 1: Melt the aluminum alloy material and pour it into the back panel forming mold; Step 2: Perform high pressure casting by a die casting machine to solidify the aluminum alloy material in the back plate forming mold to form the back plate body 1; Step 3: first take out the back panel body 1, and then grind and trim the back panel body 1 and the wall hanging part 2; Step 4: Fasten the plurality of wall-mounted components 2 to the back panel body 1 with screws.

[0026] The manufacturing method of the present invention adopts high-pressure casting, that is, increasing pressure during the die-casting process, so that the crystallization of the aluminum alloy material can be more compact. In addition, when the aluminum alloy material is melted, the present invention can first heat the aluminum alloy material to a high temperature and maintain it for a period of time, so that other alloy elements in the aluminum alloy material except Al are dissolved in the aluminum matrix, and then cool the aluminum alloy material to a certain temperature and maintain it for a period of time, so that other alloy elements in the aluminum alloy material except Al are re-precipitated and form a uniform grain structure.

[0027] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A die-cast aluminum alloy lightweight back plate, characterized in that: It includes a back plate body formed by die-casting of an aluminum alloy material; The components of the aluminum alloy material include Cu with a weight percentage ranging from 1.0% to 2.5%, Si with a weight percentage ranging from 9.5% to 11.5%, Zn with a weight percentage ranging from 0.5% to 1.5%, Mn with a weight percentage ranging from 0.4% to 0.6%, Mg with a weight percentage ranging from 0.6% to 1.5%, Fe with a weight percentage less than or equal to 2.5%, Sr with a weight percentage ranging from 0.010% to 0.045%, Mo with a weight percentage ranging from 0.1% to 0.15%, Sc with a weight percentage ranging from 0.07% to 0.15%, impurities with a weight percentage less than or equal to 0.25%, and the balance is Al.

2. The die-cast aluminum alloy lightweight back plate according to claim 1, characterized in that: It also includes a plurality of wall-mounted parts matched with the back panel body. The wall-mounted parts include a base connected to the back panel and a wall-mounted column integrally formed with the base. The wall-mounted column is provided with a wall-mounted screw hole.

3. The die-cast aluminum alloy lightweight back plate according to claim 2, characterized in that: The base of the wall hanging part is locked with the back plate body by screws.

4. The die-cast aluminum alloy lightweight back plate according to claim 1, characterized in that: The back plate body has reinforcing ribs that are staggered in transverse and longitudinal directions.

5. A method for manufacturing the die-cast aluminum alloy lightweight back plate according to claim 1, characterized in that: The steps include: Step 1: Melt the aluminum alloy material and pour it into the back panel forming mold; Step 2: Perform high pressure casting through a die casting machine to solidify the aluminum alloy material in the back plate forming mold to form a back plate body; Step 3: Take out the back panel body and polish and trim it.

6. The manufacturing method according to claim 5, characterized in that: The method also includes step 4: fixing the plurality of wall-mounted components to the back panel body by screws.

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