Housing material right-angle bending processing method

Abstract

To make the appearance of a notebook personal computer housing beautiful and to enhance the strength of the whole, and to provide a housing material right-angle bending processing method.SOLUTION: The method includes cutting an aluminum alloy plate into a primary blank body, arranging an avoidance notch on an outside of the primary blank body, extruding downward the aluminum alloy after cutting, to form a side bending part and a hinge bending part on the outside of the primary blank body, applying a pressure on the side bending part toward the hinge bending part to make the side bending part and the hinge bending part vertically connected, applying a pressure on a top of the side bending part and a top of the hinge bending part toward a central axis of the primary blank body, then applying a downward pressure to the top of the side bending part and making it parallel with a top of the primary blank body.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to the technical field of housing material processing, and more particularly to a method for processing a housing material at right angles. [Background technology]

[0002] With the continuous progress of society and the development of communication technology, the application of laptops has become more and more common, and people's demands for laptops are also increasing day by day. Most traditional laptop housings are made of aluminum, which can usually be made from a single piece of aluminum alloy by CNC machining. This increases manufacturing costs. The laptop operating panel housing consists of an upper housing and a lower housing. During the manufacturing process, the outer surface of the upper housing is formed by a one-time bending process, which often causes wrinkles and cracks at the bending points. The product pass rate is very low and completely fails to meet the high standards of consumers. Moreover, after bending is completed, due to defects in the bending technology, the bending joints generally have a rounded corner shape, which makes the product look unattractive. Furthermore, the aluminum laptop upper housing is prone to cracks and cracking problems when the rotating shaft assembly side is bent at a right angle. Summary of the Invention

[0003] The technical problem that this invention aims to solve is that in the manufacturing process of the upper housing of the operation panel of a laptop computer, the outside is formed in one step by a folding process, which often results in wrinkles and cracks at the bending points, resulting in a very low pass rate for the product and completely failing to meet the high standards required by consumers. Moreover, after the bending is completed, due to defects in the bending technique, the bending connection points generally have a rounded corner shape, which makes the product look unattractive. Furthermore, in the case of aluminum upper housings of laptop computers, even when the rotating shaft assembly side is bent at a right angle, cracks and sticking problems are likely to occur. To address the above defects of the prior art, a method for bending housing material at right angles is provided.

[0004] The technical solutions adopted in the present invention to solve the technical problems are as follows:

[0005] A method for bending a housing material at right angles is provided, the method comprising: A cutting step S1 in which an aluminum alloy plate is cut into a blank body according to required dimensions and shapes and a relief notch is provided on the outside of the blank body; a stretch embossing step S2 in which the cut aluminum alloy is extruded downward to form a bent portion on the outside of the blank body, the bent portion including a side bent portion and a rotary shaft bent portion, and the relief notch is disposed between the side bent portion and the rotary shaft bent portion; a shaping step S3 in which pressure is applied to the side fold in the direction of the rotation axis bending, and the position of the rotation axis bending is restricted in order to prevent bending from occurring at the rotation axis bending, and the side fold is pressed toward the rotation axis bending by the pressure, and at this time, a distortion is generated at the connection point between the side fold and the rotation axis bending, and the side fold and the rotation axis bending are connected perpendicularly to each other; a pressing return step S4 in which pressure is applied to the side fold in the direction of the central axis of the blank body, and the pressure presses the side fold in the direction of the central axis of the blank body, gradually generating distortion at the connection point between the side fold and the blank body, thereby connecting the side fold and the blank body perpendicular to each other; a primary drawing step S5 in which a drawing portion is provided at the top of the side fold and the rotation axis fold, pressure is applied to the top of the opposite side fold and the rotation axis fold in the direction of the central axis of the blank body, and the application of pressure is stopped when the top of the side fold and the rotation axis fold is inclined 30 to 60 degrees toward the center of the blank body; and a secondary drawing step S6 of applying downward pressure to the drawn portion from above to below, thereby bending the drawn portion downward until it becomes parallel to the top surface of the blank body.

[0006] Preferably, in step S3, a portion to be folded is provided on the outside of the blank, and as the portion to be folded presses the side folds in the direction of the central axis of the blank body, the side folds compress the portion to be folded.

[0007] Preferably, the width of the portion to be folded is 10 mm to 15 mm.

[0008] Preferably, the aluminum alloy is a pentagonal aluminum alloy.

[0009] Preferably, in step S2, when the cut aluminum alloy is extruded downward, a recessed tank body is formed on the top surface of the blank.

[0010] Preferably, the blank comprises a rectangular aluminum plate having a mounting groove formed on one side thereof.

[0011] Preferably, the rotating shaft is disposed on the side of the rectangular aluminum plate where the mounting groove is formed.

[0012] Preferably, the hardness of the aluminum alloy is 65HB to 75HB.

[0013] Preferably, in step S2, the angle between the side bend and the rotation axis bend is R=1 mm to 1.5 mm.

[0014] Preferably, in step S4, when the side fold is pressed towards the pivot fold, the relief notch can be continuously adjusted in size to prevent the side fold and the pivot fold from stacking.

[0015] The beneficial effects of the present invention are as follows: 1. In the present invention, an aluminum alloy is cut into a blank body according to a required size and shape, and a relief notch is provided on the outside of the blank body. During the subsequent side bending and rotary shaft bending, the relief notch can prevent the side bending and rotary shaft bending from pushing each other out and getting stuck, and the relief notch can be further enlarged during the side bending and rotary shaft bending. Therefore, the relief notch can be set relatively small before the side bending and rotary shaft bending. If the relief notch is small during the side bending and rotary shaft bending, the relief notch can be further enlarged to ensure the size of the relief notch is appropriate.

[0016] 2. By utilizing the ductility of the aluminum alloy, a bent portion is formed on the outside of the blank body without breaking, and strain is generated at the connection point between the side bent portion and the rotary shaft bent portion so that the side bent portion and the rotary shaft bent portion are connected perpendicular to each other. Gradually, strain is generated at the connection point between the side bent portion and the blank body so that the side bent portion and the blank body are connected perpendicular to each other, and the top of the side bent portion is bent downward until it is parallel to the top surface of the blank body.

[0017] By processing the exterior of the aluminum alloy laptop case, the side folds of the laptop case are vertically connected to the blank body, and the tops of the side folds and the rotation axis folds of the laptop case are both formed with drawn structures parallel to the blank body, thereby reducing manufacturing costs, improving the appearance of the laptop case, and increasing the overall strength.

[0018] Hereinafter, in order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to drawings and examples. The drawings in the following description are part of the embodiments of the present invention, and those skilled in the art can further derive other drawings based on these drawings without any creative work. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of an aluminum alloy according to the present invention after cutting. [Figure 2] FIG. 2 is an enlarged schematic view of part C in FIG. 1 according to the present invention. [Figure 3] FIG. 2 is a perspective schematic view of the film after tension embossing in the present invention. [Figure 4] FIG. 4 is an enlarged schematic view of a portion D in FIG. 3 according to the present invention. [Figure 5] FIG. 2 is a perspective schematic view of the present invention after shaping. [Figure 6] FIG. 6 is an enlarged schematic view of a portion E in FIG. 5 according to the present invention. [Figure 7] FIG. 2 is a perspective schematic diagram showing a case where the lens is drawn at 45 degrees in the present invention. [Figure 8] FIG. 8 is an enlarged schematic view of part A in FIG. 7 according to the present invention. [Figure 9] FIG. 2 is a perspective schematic view of the completed aperture stop of the present invention. [Figure 10] FIG. 10 is an enlarged schematic view of part B of FIG. 9 according to the present invention. [Figure 11] FIG. 10 is a perspective view of the keyboard according to the present invention after adding a keyboard hole. [Figure 12] FIG. 10 is a schematic perspective view of the side bending process of the present invention after the through holes have been pressed. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely below with reference to the drawings in the present invention. Of course, the described embodiments are only some of the embodiments of the present invention, and are not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in the present invention without creative work fall within the scope of protection of the present invention.

[0021] In describing the embodiments of the present application, unless otherwise clearly specified or limited, the meaning of terms such as "connected to each other" and "connection" should be broadly understood. For example, they may be fixedly connected, detachably connected, or integrally connected. They may be mechanically connected, electrically connected, directly connected to each other, or indirectly connected to each other via an intermediate medium. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific circumstances.

[0022] In the examples of this application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0023] In the description herein, a description that refers to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described with reference to an embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art can combine and combine different embodiments or examples described herein, as well as features of different embodiments or examples, without mutual contradiction.

[0024] As shown in FIGS. 1 to 12, an embodiment of the present invention relates to a method for bending a housing material at right angles, for example, the method comprising: a cutting step S1 in which an aluminum alloy is cut into a blank body 1 according to required dimensions and shape, and a relief notch 2 is provided on the outside of the blank body 1; The cut aluminum alloy is extruded downward to form a bent portion on the outside of the blank body 1 by stretch embossing, and the bent portion includes a side bent portion 3 and a rotary shaft bent portion 4, and the rotary shaft bent portion 4 is used for subsequent assembly to mount a rotary shaft of a notebook computer therein. The connection portion between the side bent portion 3 and the blank body 1 is a first fillet 5, and the connection portion between the side bent portion 3 and the rotary shaft bent portion 4 is a second fillet 6, and the relief notch 2 is formed between the side bent portion 3 and the rotary shaft bent portion. a press die is placed between the blank body 1 and the bend 4, and the aluminum alloy after cutting can be pressed by the press die. Since the aluminum alloy has relatively good ductility, the forming effect of the side bend 3 and the rotary axis bend 4 is better; the press die includes a lower die and an upper die, and the aluminum alloy is placed in the lower die, and the upper die can press the aluminum alloy. When the upper die presses the aluminum alloy downward, the blank body 1 moves downward and bends outward to form the side bend 3 and the rotary axis bend 4; and a stretch embossing step S2. a position control device is provided to apply pressure to the side bend 3 toward the rotation axis bend 4, and the side bend 3 is pressed toward the rotation axis bend 4 by the pressure, and at this time, distortion is generated at the connection point between the side bend 3 and the rotation axis bend 4 in step 2, and the side bend 3 and the rotation axis bend 4 are connected perpendicularly to each other, thereby increasing the connection strength and hardness between the side bend 3 and the rotation axis bend 4, and at this time, the relief notch 2 can be repaired by repairing the shaping step S3; Pressure is applied to the side fold 3 toward the central axis of the blank body 1, and the pressure presses the side fold 3 toward the central axis of the blank body 1, gradually generating distortion at the connection point between the side fold 3 and the blank body 1 in step 2, and the side fold 3 and the blank body 1 are vertically connected to each other in a pressing return S4. When the side fold 3 presses the blank body 1 to form a vertical connection between the side fold 3 and the blank body 1, the connection strength and hardness between the side fold 3 and the blank body 1 are both increased, and the corrosion resistance of the aluminum alloy is improved. The aluminum alloy can remove surface scale and thermal cracks during the extrusion process, and the surface of the aluminum material can be made more the blank is pressed back to a high temperature, and then the blank is pressed out by a die; compared with traditional cutting, pressing back reduces waste and saves material costs; the blank body 1 is fixed, and a pressing die is used to act on the side folds 3, so that the side folds 3 receive a uniform force and prevent the side folds 3 from being deformed when moving toward the center point of the blank body 1; the pressing die includes a pressing plate, the side area of ​​which is equal to that of the side folds 3, and positioning members are provided at the top and bottom of the pressing plate to position the pressing plate on the side folds 3; a primary drawing step S5 in which a drawing section 7 is provided at the top of the side folds 3 and the rotation axis folds 4, and pressure is applied to the tops of the side folds 3 and the rotation axis folds 4 in the direction of the central axis of the blank body 1, and the application of pressure is stopped when the drawing section is inclined 30 to 60 degrees toward the center of the blank body 1, preferably when the tops of the side folds 3 and the rotation axis folds 4 are inclined 45 degrees toward the center of the blank body 1; and a secondary drawing step S6 in which downward pressure is applied to the drawn portion to bend the drawn portion 7 downward until it becomes parallel to the top surface of the blank body 1.

[0025] In step S3, a folding section is provided on the outside of the blank, and the folding section presses the side folding section 3 toward the central axis of the blank body 1, causing the side folding section 3 to compress the folding section, thereby shrinking the folding section and increasing its strength. Furthermore, by presetting an appropriate folding section, the folding angle and folding position can be more accurately controlled, improving the precision and consistency of the final product. The design of the folding section also effectively reduces stress concentration during the folding process, preventing cracks and breaks from occurring at the folding points of the material.

[0026] In this embodiment, the width of the portion to be folded (not shown) is 10 mm to 15 mm.

[0027] In this embodiment, the aluminum alloy is a pentagonal aluminum alloy, which has good corrosion resistance and high strength. pentagonal aluminum alloys have moderate strength in a cold-worked state and are suitable for applications that require a certain level of strength but good formability. The specific model number of the aluminum alloy may be 5052 or 5B52.

[0028] Referring to Figures 2 to 9, in step S2, when the cut aluminum alloy is extruded downward, a tank body 8 is formed as a recess on the top surface of the blank, and in subsequent processing, the inside of this tank body 8 can be formed into multiple keyboard holes using a press mold.

[0029] Referring to Figures 1 to 9, the blank includes a rectangular aluminum plate, and a mounting groove 9 is opened on one side of the rectangular aluminum plate. The presence of the mounting groove 9 makes it convenient to combine and connect the laptop case and the laptop display.

[0030] In this embodiment, the rotating shaft bending member 4 is installed on the side of the rectangular aluminum plate where the mounting groove 9 is opened.

[0031] In this embodiment, the hardness of the aluminum alloy is 65HB to 75HB, and preferably 70HB.

[0032] In this embodiment, the second fillet has a radius 6R of 1 mm to 1.5 mm, preferably 1 mm.

[0033] 1 to 9, in step S4, when the side bends 3 are pressed toward the rotary shaft bends 4, the size of the relief notches 2 can be constantly adjusted to prevent the side bends 3 and the rotary shaft bends 4 from stacking. Furthermore, before the side bends 3 and the rotary shaft bends 4 are formed, the relief notches 2 can be set relatively small. If the relief notches 2 are small when the side bends 3 and the rotary shaft bends 4 are formed, the relief notches 2 can be further enlarged to ensure that the size of the relief notches 2 is appropriate.

[0034] Furthermore, in the present invention, a plurality of through holes are opened in the side bends 3 in post-processing.

[0035] It is understandable that those skilled in the art can make improvements or modifications according to the above description, and all of these improvements and modifications should fall within the scope of the claims appended hereto. [Explanation of symbols]

[0036] 1. Blank body 2. Relief notch 3. Side folding 4. Rotation axis bending 5. First fillet 7. Squeezing section 8, tank body 9. Mounting groove 10. Through hole

Claims

1. a cutting step S1 in which an aluminum alloy plate is cut into a blank body (1) according to required dimensions and shape, and relief notches (2) are provided on the outside of the blank body (1); a stretch embossing step S2 in which the cut aluminum alloy is extruded downward to form a bent portion on the outside of the blank body (1), the bent portion including a side bent portion (3) and a rotary shaft bent portion (4), and the relief notch (2) is located between the side bent portion (3) and the rotary shaft bent portion (4); a shaping step S3 in which pressure is applied to the side fold (3) in the direction of the rotation axis fold (4), and the position of the rotation axis fold (4) is restricted to prevent bending at the rotation axis fold (4), and the side fold (3) is pressed toward the rotation axis fold (4) by the pressure, and at this time, distortion is generated at the connection point between the side fold (3) and the rotation axis fold (4), and the side fold (3) and the rotation axis fold (4) are connected perpendicularly to each other; a pressing return step S4 in which pressure is applied to the side folds (3) in the direction of the central axis of the blank body (1), and the pressure presses the side folds (3) in the direction of the central axis of the blank body (1), gradually generating distortion at the connection points between the side folds (3) and the blank body (1), thereby connecting the side folds (3) and the blank body (1) perpendicular to each other; a primary drawing step S5 in which drawing sections (7) are provided at the tops of the side folds (3) and the rotation axis folds (4), pressure is applied to the tops of the side folds (3) and the rotation axis folds (4) in the direction of the central axis of the blank body (1), and the application of pressure is stopped when the tops of the side folds (3) and the rotation axis folds (4) are inclined 30 to 60 degrees toward the center of the blank body (1); and a secondary drawing step S6 in which downward pressure is applied from above to below the drawn portion, thereby bending the drawn portion (7) downward until it becomes parallel to the top surface of the blank body (1).

2. 2. The method for processing a housing material at right angles as described in claim 1, characterized in that in step S3, a portion to be bent is provided on the outside of the blank, and as the portion to be bent presses the side fold (3) in the direction of the central axis of the blank body (1), the side fold (3) compresses the portion to be bent.

3. 2. The method for bending a housing material at right angles according to claim 1, wherein the width of the portion to be bent is 10 mm to 15 mm.

4. 2. The method for bending a housing material at right angles according to claim 1, wherein the aluminum alloy is a pentagonal aluminum alloy.

5. 2. The method for bending a housing material at right angles according to claim 1, wherein in step S2, when the cut aluminum alloy is extruded downward, a recess (8) is formed on the top surface of the blank.

6. 2. The method for bending a housing material at right angles according to claim 1, wherein the blank comprises a rectangular aluminum plate, and a mounting groove (9) is formed on one side of the rectangular aluminum plate.

7. 7. The method for bending a housing material at right angles according to claim 6, wherein the rotary shaft bending (4) is installed on the side of the rectangular aluminum plate where the mounting groove (9) is opened.

8. 7. The method for bending a housing material at right angles according to claim 6, wherein the hardness of the aluminum alloy is 65 HB to 75 HB.

9. 2. The method for bending a housing material at right angles according to claim 1, wherein in step S2, an angle between the side bending and the rotation axis bending has a radius R of 1 mm to 1.5 mm.

10. A method for bending a housing material at right angles as described in any one of claims 1 to 9, characterized in that in step S4, when the side fold (3) is pressed toward the rotation axis fold (4), the relief notch (2) can be constantly adjusted in size to prevent the side fold (3) and the rotation axis fold (4) from stacking.

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