Method for Right-Angle Bending of Housing Material

Abstract

It not only makes the appearance of the notebook computer case clean but also has high overall strength. A method for right-angle bending processing of the case material is provided. 【Solution means】In the present invention, an aluminum alloy is cut into a blank body, a relief notch is provided on the outside of the blank body, the cut aluminum alloy is extruded downward to form side bending and rotational axis bending on the outside of the blank body, pressure is applied to the side bending toward the rotational axis bending, the side bending and the rotational axis bending are connected perpendicularly to each other, pressure is applied to the top of the side bending and the rotational axis bending in the direction of the central axis of the blank body, next, downward pressure is applied to the top of the side bending to make the top of the side bending parallel to the top surface of the blank body.

Description

Technical Field

[0001] The present invention relates to the technical field of housing material processing, and specifically to a method for right-angle bending of housing materials.

Background Art

[0002] With the continuous progress of society and the development of communication technology, the application of notebook computers has become increasingly common, and people's requirements for notebook computers have also been increasing day by day. Many of the conventional notebook computer housings are made of aluminum materials, and usually can only be made of a whole piece of CNC aluminum alloy. As a result, the manufacturing cost is high. The housing of the operation panel of the notebook computer is composed of an upper housing and a lower housing. For the upper housing, in the manufacturing process, the outer side is subjected to primary forming by a bending process, and wrinkles and cracks often occur at the bending positions. The pass rate of the products is very low, and it is impossible to meet the high standard requirements of consumers at all. Moreover, after the bending is completed, due to the defects of the bending technology, the bending connection positions generally present a rounded shape, so the appearance of the products is not good. Furthermore, for the upper housing of an aluminum notebook computer, cracks and stock problems are likely to occur even when the rotation axis assembly side is bent at a right angle.

Summary of the Invention

[0003] The technical problem to be solved by the present invention is that for the upper housing of the operation panel of a notebook computer, in the manufacturing process, the outer side is subjected to primary forming by a bending process, and wrinkles and cracks often occur at the bending positions. The pass rate of the products is very low, and it is impossible to meet the high standard requirements of consumers at all. Moreover, after the bending is completed, due to the defects of the bending technology, the bending connection positions generally present a rounded shape, so the appearance of the products is not good. Furthermore, for the upper housing of an aluminum notebook computer, cracks and stock problems are likely to occur even when the rotation axis assembly side is bent at a right angle. In view of the above defects of the prior art, a method for right-angle bending of housing materials is provided.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows.

[0005] A method for right-angle bending of a housing material is provided, and the method for right-angle bending of the housing material includes: A cutting step S1 of cutting an aluminum alloy plate into a blank body according to required dimensions and shapes, and providing a relief notch on the outside of the blank body; A tensile embossing process of extruding the cut aluminum alloy downward to form a bent portion on the outside of the blank body, wherein the bent portion includes a side bend and a rotary axis bend, and the relief notch is installed between the side bend and the rotary axis bend; a tensile embossing step S2; An shaping step S3 of applying pressure to the side bend in the direction of the rotary axis bend to restrict the occurrence of bending in the rotary axis bend, and position-regulating in the rotary axis bend, and pressing the side bend toward the rotary axis bend by the pressure. At this time, distortion is generated at the connection portion between the side bend and the rotary axis bend to connect the side bend and the rotary axis bend perpendicularly to each other; A pressing-back step S4 of applying pressure to the side bend in the direction of the central axis of the blank body, and pressing the side bend in the direction of the central axis of the blank body by the pressure. At this time, distortion is gradually generated at the connection portion between the side bend and the blank body to connect the side bend and the blank body perpendicularly to each other; A primary squeezing step S5 of providing a squeezing portion at the top of the side bend and the rotary axis bend, applying pressure toward the central axis of the blank body to the top of the side bend and the rotary axis bend, and stopping applying pressure when the top of the side bend and the rotary axis bend are inclined 30 to 60 degrees toward the center of the blank body; A secondary squeezing step S6 of applying downward pressure from top to bottom to the squeezing portion and bending the squeezing portion downward until it is parallel to the top surface of the blank body.

[0006] Preferably, in the step S3, a bending planned portion is provided outside the blank, and as the side bending presses in the direction of the central axis of the blank body, the side bending compresses the bending planned portion.

[0007] Preferably, the width of the bending planned portion is 10 mm to 15 mm.

[0008] Preferably, the aluminum alloy is a five-series aluminum alloy.

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

[0010] Preferably, the blank includes a rectangular aluminum plate, and a mounting groove is opened on one side of the rectangular aluminum plate.

[0011] Preferably, the rotational axis bending is installed on the side where the mounting groove of the rectangular aluminum plate is opened.

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

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

[0014] Preferably, in the step S4, when the side bending is pressed toward the rotational axis bending, the relief notch can continuously adjust its size to prevent the stack of the side bending and the rotational axis bending.

[0015] The beneficial effects of the present invention are as follows. 1. The present invention cuts an aluminum alloy into a blank body according to required dimensions and shapes, provides a relief notch on the outer side of the blank body. When subsequent side bending and rotational axis bending are formed, the relief notch can prevent the side bending and the rotational axis bending from pushing out and stacking against each other, and the relief notch can be further enlarged during the forming of the side bending and the rotational axis bending. Thereby, the relief notch can be set relatively small before the forming of the side bending and the rotational axis bending. When the relief notch is small during the forming of the side bending and the rotational axis bending, the relief notch can be further enlarged to make the size of the relief notch appropriate.

[0016] 2. Utilize the ductility of the aluminum alloy to prevent damage while forming a bent portion on the outer side of the blank body, generate distortion at the connection location between the side bending and the rotational axis bending to connect the side bending and the rotational axis bending perpendicular to each other, gradually generate distortion at the connection location between the side bending and the blank body to connect the side bending and the blank body perpendicular to each other, and bend the top of the side bending downward until it is parallel to the top surface of the blank body.

[0017] By processing the outer side of the aluminum alloy notebook computer housing, the side bending of the notebook computer housing and the body are vertically connected, and a constriction structure parallel to the blank body is formed at the top of the side bending and the top of the rotational axis bending of the notebook computer housing. Thereby, while saving manufacturing costs, the appearance of the notebook computer housing is made beautiful and the overall strength is also high.

[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 the drawings and embodiments. The drawings in the following description are part of the embodiments of the present invention. For those skilled in the art, other drawings can be further obtained based on these drawings without creative labor.

Brief Description of the Drawings

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Embodiments for Carrying out the Invention

[0020] To make the objectives, technical solutions and advantages of the present invention clearer, hereinafter, with reference to the drawings in the present invention, the technical solutions in the present invention will be clearly and completely described. Of course, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present invention.

[0021] In the description of the embodiments of the present application, unless otherwise clearly defined or limited, the meanings of terms such as "connected to each other" and "connected" should be understood broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can also be a mechanical connection, an electrical connection, or directly connected to each other, or indirectly connected to each other through 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 the specific situation.

[0022] In the embodiments of the present application, unless otherwise clearly defined or limited, the fact that the first feature is "above" or "below" the second feature may mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are indirectly in contact through an intermediate medium. Also, the fact that the first feature is "above", "above", and "upper side" of the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. The fact that the first feature is "below", "below", and "lower side" of the second feature may mean that the first feature is directly below or obliquely 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 of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or features described with reference to the embodiments or examples are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials, or features described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art can combine and combine the different embodiments or examples described in this specification, as well as the features of different embodiments or examples, without contradiction.

[0024] As shown in FIGS. 1 to 12, an embodiment of the present invention relates to, for example, a method for bending a housing material at a right angle. The method includes: A cutting step S1 of cutting an aluminum alloy into a blank body 1 according to required dimensions and shapes, and providing a relief notch 2 on the outside of the blank body 1; A tensile embossing process of extruding the cut aluminum alloy downward to form a bent portion on the outside of the blank body 1. The bent portion includes a side bend 3 and a rotary shaft bend 4. The rotary shaft bend 4 can be used for subsequent assembly to mount the rotary shaft of a notebook computer during the rotary shaft bend 4. And, the connection portion between the side bend 3 and the blank body 1 is a first fillet 5, the connection portion between the side bend 3 and the rotary shaft bend 4 is a second fillet 6, and the relief notch 2 is installed between the side bend 3 and the rotary shaft bend 4. Further, the cut aluminum alloy can be pressed by a press die. Since the aluminum alloy has relatively good ductility, the forming effect of the side bend 3 and the rotary shaft bend 4 is better. The press die includes a lower die and an upper die. The aluminum alloy is disposed in the lower die, and the upper die can press the aluminum alloy. When the upper die presses the aluminum alloy downward, a tensile embossing process step S2 of forming the side bend 3 and the rotary shaft bend 4 by bending the outside while moving the blank body 1 downward; A shaping step S3 of applying pressure to the side bend 3 toward the rotary shaft bend 4, providing a position restricting device at the rotary shaft bend 4 that can restrict the occurrence of bending, pressing the side bend 3 toward the rotary shaft bend 4 by the pressure. At this time, distortion is generated at the connection portion between the side bend 3 and the rotary shaft bend 4 in step 2 to connect the side bend 3 and the rotary shaft bend 4 perpendicularly to each other, thereby increasing the connection strength and hardness between the side bend 3 and the rotary shaft bend 4. At this time, the relief notch 2 can be repaired by repair; Apply pressure to the side bend 3 in the direction of the central axis of the blank body 1. Due to the pressure, press the side bend 3 in the direction of the central axis of the blank body 1. At this time, gradually generate distortion at the connection location between the side bend 3 and the blank body 1 in step 2, and it is the pressing-back step S4 that perpendicularly connects the side bend 3 and the blank body 1 to each other. When the side bend 3 presses the blank body 1 and the side bend 3 and the blank body 1 form a perpendicular connection, both the connection strength and hardness between the side bend 3 and the blank body 1 increase, and the corrosion resistance of the aluminum alloy is improved. The aluminum alloy can remove the surface scale and thermal cracks during the extrusion process, make the surface of the aluminum material smoother, increase the brightness, and enhance the corrosion resistance. During the pressing-back process, after the metal blank is heated to a high temperature, it is extruded by the mold. Compared with the conventional cutting process, pressing-back can reduce waste and save material costs. Furthermore, the blank body 1 can be fixed and the pressing mold can be used to act on the side bend 3, so that the side bend 3 can receive force evenly and prevent the side bend 3 from deforming when moving in the direction towards the center point of the blank body 1. The pressing mold includes a pressing plate, the side area of the pressing plate is equal to the side area of the side bend 3, and positioning members for positioning the pressing plate on the side bend 3 are provided at the top and bottom of the pressing plate. The pressing-back step S4, Provide a constriction part 7 at the top of the side bend 3 and the rotary-axis bend 4, apply pressure in the direction of the central axis of the blank body 1 to the top of the side bend 3 and the rotary-axis bend 4, and stop applying pressure when the constriction part is inclined 30 to 60 degrees towards the center of the blank body 1. Preferably, stop applying pressure when the top of the side bend 3 and the rotary-axis bend 4 is inclined 45 degrees towards the center of the blank body 1. The primary constriction step S5, Include a secondary constriction step S6 of applying downward pressure to the constriction part and bending the constriction part 7 downward until it is parallel to the top surface of the blank body 1.

[0025] In step S3, a planned bending portion is provided outside the blank. As the planned bending portion presses side bending 3 in the direction of the central axis of the blank body 1, side bending 3 compresses the planned bending portion. Thereby, while shrinking the planned bending portion and increasing its strength, further, by presetting an appropriate planned portion, the bending angle and the bending position can be controlled more accurately, the accuracy and consistency of the final product can be improved, and the design of the planned portion can also effectively reduce stress concentration in the bending process and avoid cracks and fractures at the bending locations of the material.

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

[0027] In this embodiment, the aluminum alloy is a five - series aluminum alloy. On the one hand, the five - series aluminum alloy has good corrosion resistance and high strength. The five - series aluminum alloy has medium strength in the cold - worked state and is suitable for applications where a certain strength is required but good forming performance is demanded. The specific model number of the aluminum alloy may be 5052 or 5B52.

[0028] Referring to FIGS. 2 to 9, in step S2, when the cut aluminum alloy is extruded downward, a groove 8 is formed by being recessed on the top surface of the blank. Regarding this groove 8, in subsequent processing, a plurality of keyboard holes can be formed in the groove 8 using a press mold.

[0029] Referring to FIGS. 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 is convenient for connecting the notebook computer housing and the notebook computer display in combination.

[0030] In this embodiment, the rotary - axis bending 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 65 HB to 75 HB, preferably 70 HB.

[0032] In this embodiment, the second fillet is such that 6R = 1 mm to 1.5 mm, preferably 1 mm.

[0033] Referring to FIGS. 1 to 9, in step S4, when the side bending 3 is pressed toward the rotary shaft bending 4, the relief notch 2 can continuously adjust its size to prevent the stack of the side bending 3 and the rotary shaft bending 4. Further, before the side bending 3 and the rotary shaft bending 4 are formed, the relief notch 2 can be set relatively small. When the side bending 3 and the rotary shaft bending 4 are being formed, if the relief notch 2 is small, the relief notch 2 can be further enlarged to make the size of the relief notch 2 appropriate.

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

[0035] As can be understood, those skilled in the art can make improvements or conversions according to the above description, and all these improvements and conversions should belong to the scope of the claims attached to the present invention.

Description of Reference Numerals

[0036] 1. Blank body 2. Relief notch 3. Side bending 4. Rotary shaft bending 5. First fillet 7. Throttling portion 8. Tank body 9. Mounting groove 10. Through hole

Claims

1. A cutting step S1 of cutting an aluminum alloy plate into a blank body (1) according to a required size and shape and providing a relief notch (2) on the outside of the blank body (1); a tensile embossing step S2 in which the cut aluminum alloy is extruded downward to form a fold on the outside of the blank body (1), the fold including a side fold (3) and a rotary shaft fold (4), and the relief notch (2) is located between the side fold (3) and the rotary shaft fold (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 in order to prevent bending from occurring at the rotation axis fold (4), and the side fold (3) is pressed toward the rotation axis fold (4) by the pressure, at which time, a distortion is generated at the connection point between the side fold (3) and the rotation axis fold (4), thereby connecting the side fold (3) and the rotation axis fold (4) perpendicular to each other; a pressing return step S4 in which pressure is applied to the side fold (3) in the direction of the central axis of the blank body (1), and the pressure presses the side fold (3) in the direction of 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), thereby connecting the side fold (3) and the blank body (1) perpendicular to each other; a primary drawing step S5 in which a drawing section (7) is 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 the drawn portion, so that the drawn portion (7) is bent downward until it becomes parallel to the top surface of the blank body (1).

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 folded is provided on the outside of the blank, and as the side fold (3) is pressed in the direction of the central axis of the blank body (1), the side fold (3) compresses the portion to be folded.

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 on which the mounting groove (9) is formed.

8. 7. The method for bending a casing 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 processing a right-angle bending of a housing material 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 processing 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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