Punch forming method for composite plate stacked material
Through the stamping forming method of composite plate stacks, the filling material and sandwich structure are used to solve the problem of limited application of aluminum alloy plates after stamping, achieving higher application and satisfaction of different needs.
Patent Information
- Application Number
- CN202311421446.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-30
- Publication Date
- 2025-05-02
AI Technical Summary
After stamping, existing aluminum alloy sheets are difficult to meet the needs of lightweight and structural strength, resulting in limited application.
By adopting a stamping method of composite plate stacking, a filling material is provided in the accommodation space of the second plate and a third plate is stacked in a sandwich structure to apply stamping molding.
It improves the application of the stamped shell, meets different needs, and avoids potential corrosion problems.
Smart Images
Figure CN119910054A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a stamping forming method of a plate material, in particular to a stamping forming method of a composite plate stack. Background Art
[0002] The shell of a general electronic product is formed by stamping a plate (such as an aluminum alloy plate). In addition, in order to improve the aesthetics of the shell of the electronic product, the industry often performs sandblasting and anodizing on the shell obtained by stamping. However, the aluminum alloy plate is limited in its application after stamping due to its material properties. In particular, with the advancement of the technology industry, the demand for 3C products such as computers and computer peripherals, communications and consumer electronics is increasing day by day, and they are becoming thinner and smaller. The aluminum alloy shell obtained by stamping has gradually failed to meet the use requirements.
[0003] As can be seen from the above description, improving the stamping method of the sheet material to increase the applicability of the housing after stamping is a topic that needs to be broken through by the relevant industry in the relevant technical field. Summary of the invention
[0004] The object of the present invention is to provide a stamping method for composite sheet stacking which can improve the applicability of a shell after stamping.
[0005] The stamping forming method of composite plate stacking of the present invention comprises the following steps: step (a), step (b), step (c), and step (d).
[0006] The step (a) is to stack a second plate on a complete first plate, wherein the interior of the second plate has a receiving space that is recessed toward the complete first plate.
[0007] The step (b) is to place a filling material in the accommodation space of the second plate after the step (a).
[0008] The step (c) is to stack a complete third plate on the second plate after the step (b) to cover the filling material and form a sandwich structure.
[0009] The step (d) is to stamp the sandwich structure after the step (c) to bend the periphery of the sandwich structure to form a shell.
[0010] Wherein, the weight of the filling material in the step (b) is relatively lower than that of the complete first plate, the second plate and the complete third plate, or its rigidity is relatively higher than that of the complete first plate, the second plate and the complete third plate.
[0011] In the stamping forming method of composite plate stacking described in the present invention, in the step (a), the accommodation space of the second plate is defined by an inner annular surface penetrating the upper surface and the lower surface of the second plate.
[0012] In the stamping forming method of composite plate stacking described in the present invention, the thickness of the complete first plate is substantially equal to the thickness of the complete third plate.
[0013] In the stamping forming method of composite plate stacking described in the present invention, in the step (b), the filling material is selected from a plastic plate, a carbon fiber plate, a magnesium alloy (Mg alloy) plate, a stainless steel plate, or a titanium alloy (Ti alloy) plate.
[0014] In the stamping forming method of composite plate stacking described in the present invention, the peripheral thickness of the second plate is 0.5 to twice the thickness of the complete first plate, and the peripheral thickness of the second plate is 0.5 to twice the thickness of the complete third plate.
[0015] In the stamping forming method of composite plate stacking described in the present invention, in the step (a), the complete first plate is made of aluminum alloy, and the second plate is made of aluminum alloy; in the step (c), the complete third plate is made of aluminum alloy.
[0016] The stamping forming method of composite plate stacking described in the present invention further includes step (e) after step (d). In step (d), the end face of the periphery of the sandwich structure presents an irregular surface after implementing step (d); step (e) is to remove the irregular surface.
[0017] The stamping forming method of composite plate stacking described in the present invention further comprises a step (f) after the step (e), wherein the step (f) is to perform sandblasting on the shell after the step (e) is performed.
[0018] The stamping method for composite plate stacking described in the present invention further comprises a step (g) after the step (f), wherein the step (g) is to perform an anodic treatment on the shell after the step (f) is performed.
[0019] The beneficial effect of the present invention is that the filling material has lightweight characteristics or rigidity, and the accommodating space of the second plate can select suitable filling materials according to the requirements of the shell on different application surfaces (such as lightweight or structural strength) to improve the applicability of the shell after stamping. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, in which:
[0021] Figure 1 is a three-dimensional schematic diagram illustrating a step (a) of an embodiment of a stamping forming method of a composite plate stack of the present invention;
[0022] Figure 2 is a three-dimensional schematic diagram illustrating a step (b) of the stamping forming method of the embodiment of the present invention;
[0023] Figure 3A is a three-dimensional schematic diagram illustrating a step (c) of the stamping forming method of the embodiment of the present invention, Figure 3B yes Figure 3A A front view schematic diagram of;
[0024] Figure 4A is a three-dimensional schematic diagram illustrating a step (d) of the stamping forming method of the embodiment of the present invention, Figure 4B yes Figure 4A A cross-sectional view of
[0025] Figure 5 is a cross-sectional view illustrating a step (e) of the stamping method of the embodiment of the present invention;
[0026] Figure 6 is a three-dimensional schematic diagram illustrating a step (f) of the stamping method of the embodiment of the present invention; and
[0027] Figure 7 is a cross-sectional view illustrating a step (g) of the stamping method according to the embodiment of the present invention. DETAILED DESCRIPTION
[0028] Before the present invention is described in detail, it should be noted that similar components are denoted by the same reference numerals in the following description.
[0029] An embodiment of the stamping method of the composite sheet material stack of the present invention is suitable for forming a shell of a 3C product (not shown) or an electrical product (not shown). The stamping method of the composite sheet material stack of the embodiment of the present invention comprises the following steps: a step (a), a step (b), a step (c), and a step (d).
[0030] See also Figure 1 , the step (a) is to stack a second plate 3 on a complete first plate 2. An interior of the second plate 3 has a receiving space 30 that is recessed toward the complete first plate 2. Preferably, in the step (a), the receiving space 30 of the second plate 3 is defined by an inner annular surface 33 that penetrates an upper surface 31 and a lower surface 32 of the second plate 3, the complete first plate 2 is made of aluminum alloy (Al alloy), and the second plate 3 is made of aluminum alloy.
[0031] See also Figure 2 The step (b) is to arrange a filling material 4 in the accommodating space 30 of the second plate 3 after the step (a).
[0032] See also Figure 3A and Figure 3B , the step (c) is to stack a complete third plate 5 on the second plate 3 after the step (b), so that the complete third plate 5 covers the filling material 4, and the stacked complete first plate 2, the second plate 3, the complete third plate 5 and the filling material 4 disposed in the accommodating space 30 together form a sandwich structure 6. Preferably, in the step (c), the complete third plate 5 is made of aluminum alloy.
[0033] See also Figure 4A and Figure 4B The step (d) is to treat the sandwich structure 6 (see Figure 3A and Figure 3B ) is pressed to bend the peripheral edge 61 of the sandwich structure 6 so as to form a Figure 4A and Figure 4B As shown, the housing S is applicable to the 3C product or the electrical product.
[0034] In order to improve the applicability of the shell S obtained after stamping of the embodiment of the present invention, in the present invention, the weight of the filling material 4 in the step (b) is relatively lower than the complete first plate 2, the second plate 3 and the complete third plate 5, or its rigidity is relatively higher than the complete first plate 2, the second plate 3 and the complete third plate 5. Therefore, preferably, in the step (b), the filling material 4 suitable for the embodiment of the present invention is selected from a plastic plate, a carbon fiber plate, a magnesium alloy plate, a stainless steel plate, or a titanium alloy plate. It should be noted here that the filling material 4 is selected according to the needs of the 3C product or the electrical appliance. For example, in order to meet the needs of the 3C product in terms of lightness, thinness and miniaturization, the filling material 4 is selected from a lightweight plastic plate, a carbon fiber plate or a magnesium alloy plate. For another example, in order to meet the needs of the electrical product in terms of structural strength, the filling material 4 is selected from a rigid stainless steel plate or a titanium alloy plate.
[0035] It should be further explained here that, in order for the sandwich structure 6 to obtain a uniform stress distribution when the stamping described in step (d) is performed, preferably, the thickness of the complete first plate 2 is substantially equal to the thickness of the complete third plate 5 .
[0036] In addition, in order to enable the shell S to meet different requirements, preferably, the thickness of the periphery of the second plate 3 is 0.5 to twice the thickness of the complete first plate 2, and the thickness of the periphery of the second plate 3 is 0.5 to twice the thickness of the complete third plate 5. Taking the requirement of lightweight as an example, when the thickness of the periphery of the second plate 3 is twice the thickness of the complete first plate 2 and the complete third plate 5, the second plate 3 can provide sufficient accommodation space 30 to set the filling material 4 (such as a lightweight plastic plate, carbon fiber plate or magnesium alloy plate). In the embodiment of the present invention, the filling material 4 is illustrated by taking a plastic plate for lightweight application as an example, and the thickness of the second plate 3 is twice the thickness of the complete first plate 2 and the complete third plate 5, but is not limited thereto.
[0037] Preferably, the method further comprises a step (e) after the step (d), a step (f) after the step (e), and a step (g) after the step (f).
[0038] In the step (d), the periphery 61 (see Figure 3A and Figure 3B ) after performing step (d) is as follows Figure 4B The irregular surface 611 is generally referred to as the residual material after stamping. Figure 5 In step (e), the above-mentioned material is removed by a computer numerical control (CNC) milling machine. Figure 4B The irregular surface 611 (residue) is shown.
[0039] See also Figure 6 The step (f) is to perform a sandblasting process on the housing S after the step (e). Specifically, the step (f) is to perform the sandblasting process on the housing S using a sandblasting machine 8 to remove defects (not shown) formed on a surface of the housing S after the stamping process in the step (d).
[0040] See also Figure 7 The step (g) is to perform an anodic treatment on the shell S after the step (f) is implemented, so as to form an aluminum oxide film 7 on the surface of the shell S to beautify the appearance of the shell S.
[0041] It can be known from the detailed description of the stamping forming method of the composite sheet stacking described in the present invention that the accommodating space 30 of the second sheet 3 used in the stamping forming method described in the present invention can select suitable filling materials 4 according to the requirements of the 3C product or the electrical product (such as lightweight or structural strength). As mentioned above, lightweight application surfaces can use lightweight plastic plates, carbon fiber plates or magnesium alloy plates, while rigid stainless steel plates or titanium alloy plates can be used for application surfaces that improve structural strength. Therefore, the applicability of the shell after stamping can be improved. In addition, the deformation (deformation) generated on the sandwich structure 6 during the stamping of the step (d) can just achieve the effect of limiting the filling material 4. Furthermore, the filling material 4 arranged in the accommodating space 30 cannot be exposed outside the sandwich structure 6, so there will be no problem of potential corrosion.
[0042] In summary, the stamping method of composite plate stacking of the present invention can improve the applicability of the shell S after stamping, so the purpose of the present invention can be achieved.
[0043] However, what is described above is only an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made according to the claims and the contents of the patent specification of the present invention are still within the scope of the present invention.
Claims
1. A stamping method for composite sheet stacking, characterized in that: The following steps are involved: Step (a), stacking a second plate on a complete first plate, wherein the interior of the second plate has a receiving space that is recessed toward the complete first plate; Step (b), after step (a), placing a filling material in the accommodation space of the second plate; Step (c), after step (b), stacking a complete third plate on the second plate to cover the filling material and form a sandwich structure; and Step (d), after step (c), stamping the sandwich structure to bend the periphery of the sandwich structure to form a shell; Wherein, the weight of the filling material in the step (b) is relatively lower than that of the complete first plate, the second plate and the complete third plate, or its rigidity is relatively higher than that of the complete first plate, the second plate and the complete third plate.
2. The stamping forming method of composite plate stacking according to claim 1, characterized in that: In the step (a), the accommodation space of the second plate is defined by an inner annular surface penetrating the upper surface and the lower surface of the second plate.
3. The stamping forming method of composite plate stacking according to claim 1, characterized in that: The thickness of the complete first plate is substantially equal to the thickness of the complete third plate.
4. The stamping forming method of composite sheet stacking according to claim 3 is characterized in that: In the step (b), the filling material is selected from a plastic plate, a carbon fiber plate, a magnesium alloy plate, a stainless steel plate, or a titanium alloy plate.
5. The stamping forming method of composite plate stacking according to claim 4, characterized in that: The thickness of the periphery of the second plate is 0.5 to twice the thickness of the complete first plate, and the thickness of the periphery of the second plate is 0.5 to twice the thickness of the complete third plate.
6. The stamping forming method of composite plate stacking according to claim 1, characterized in that: In the step (a), the complete first plate is made of aluminum alloy, and the second plate is made of aluminum alloy; in the step (c), the complete third plate is made of aluminum alloy.
7. The stamping forming method of composite plate stacking according to claim 1, characterized in that: The method further comprises a step (e) after the step (d), wherein in the step (d), the end surface of the peripheral edge of the sandwich structure presents an irregular surface after the step (d) is implemented; and the step (e) is to remove the irregular surface.
8. The stamping forming method of composite plate stacking according to claim 7, characterized in that: The method further comprises a step (f) after the step (e), wherein the step (f) is to perform sandblasting on the housing after the step (e) is performed.
9. The stamping forming method of composite plate stacking according to claim 8, characterized in that: The method further comprises a step (g) after the step (f), wherein the step (g) is to subject the housing after the step (f) to anodizing.