3c stamping accessory and forming process thereof

Abstract

The present application relates to the field of 3C stamping products, and particularly to a 3C stamping accessory and a forming process thereof. The 3C stamping accessory comprises an outer shell, an inner shell, and a hollow. The outer shell comprises mutually parallel inner vertical plates and outer vertical plates, and the bottom of the inner vertical plate and the top of the outer vertical plate are connected to an integral horizontal bar. The inner shell comprises vertical main plates in surface contact with the outer vertical plates, and the back of the vertical main plates is attached to lower flaps. The top of each of the vertical main plates and the lower flaps is connected to an arc bending part, and the curvature radius of the outer wall of the arc bending part is greater than the thickness of the vertical main plates or the lower flaps. Each hollow intersects with the inner vertical plates, the outer vertical plates, and the horizontal bar, and the opening of the hollow is a three-dimensional opening. The lower flaps have cut and turned-up insertion bars, and the insertion bars pass through the hollow. The top of the arc bending part abuts against the lower surface of the horizontal bar. The present application improves the vertical bearing capacity of two assembled stamping parts. The structure is suitable for the side vertical surface of a 3C machine shell with opening and closing requirements.

Description

Technical Field

[0001] This invention relates to the field of 3C stamping products, and in particular to a 3C stamping part and its forming process. Background Technology

[0002] 3C is a collective term for computer, communication, and consumer electronics products. Whether it's the outer casing or internal functional components, 3C products often use thin metal stamping parts. Thin metal stamping parts are easy to process, facilitate the layout of various functional areas, and are also lightweight enough.

[0003] Existing 3C device casings are often also made of a single metal stamping shell. However, when two metal stamping sheets are joined together, their physical properties are compromised because they are not a single metal part, making it difficult to maintain the shape stability of the stamped metal sheets.

[0004] Due to the need for opening and closing, the two stamped metal plates cannot be fixed by spot welding, but must be connected by a snap-fit ​​structure. Therefore, there is room for improvement in the stability and shape stability of the assembly between the two. Summary of the Invention

[0005] Therefore, in view of the aforementioned existing problems and defects, the designers of this invention collected relevant information, conducted extensive evaluations and considerations, and carried out continuous experiments and modifications by technical personnel with many years of R&D experience in this industry.

[0006] To solve the above-mentioned technical problems, the present invention relates to a 3C stamping part, comprising: an outer shell, including an inner vertical plate and an outer vertical plate that are parallel to each other, with a horizontal strip integrally connected vertically to the bottom of the inner vertical plate and the top of the outer vertical plate; an inner shell, including a vertical main plate that forms surface contact with the outer vertical plate, with a lower folding plate attached to the side of the vertical main plate away from the outer shell, the tops of the vertical main plate and the lower folding plate being integrally connected by an arc-shaped bend, the radius of curvature of the outer wall of the arc-shaped bend being greater than the thickness of the vertical main plate or the lower folding plate; a hollow hole, each hollow hole intersecting with the inner vertical plate, the outer vertical plate, and the horizontal strip, the opening of the hollow hole being a three-dimensional opening; an insert, the lower folding plate having a cut and upturned insert, the insert passing through the hollow hole; the top of the arc-shaped bend abutting against the lower surface of the horizontal strip.

[0007] The above technical solution has produced the following beneficial technical effects in practical applications: For the assembly of two metal stamping sheets in the 3C field, this technical solution has optimized the design, mainly improving the vertical load-bearing capacity after the two stamping parts are assembled. This structure is suitable for use on the side facade of 3C casings that require opening and closing.

[0008] Firstly, the horizontal bars are formed by bending the outer shell, which makes it easier to withstand vertical forces and also improves the bending strength of the outer shell.

[0009] Secondly, the top of the inner shell is equivalent to having two layers, so the top structure of the inner shell itself is relatively stronger than that of the lower inner shell.

[0010] Third, the curved section is used to support the horizontal bar from below, thereby transmitting the vertical support force. The curved section has a relatively large radius of curvature, similar to a circular tube, which further enhances the structural strength.

[0011] Fourth, the curved shape of the outer shell allows for a certain amount of vertical space in the hollowed-out holes, making it easy to insert the insert vertically from bottom to top.

[0012] Fifth, after the insert passes through the hollow hole, the inner shell and the outer shell are interlocked to a certain extent, so the inner shell and the outer shell are not easy to tilt, slip or misalign.

[0013] As a further improvement to the technical solution disclosed in this invention, the inner vertical plate, the outer vertical plate and the horizontal strip are all connected by rounded corners, and the width of the horizontal strip is greater than the radius of curvature of the outer wall of the arc bend.

[0014] The above technical solution produces the following beneficial technical effects in practical applications: there is a certain transition at the bend of the outer shell, which minimizes structural damage to the outer shell. At the same time, the horizontal strip is narrow, but sufficient to allow the top of the arc-shaped bend to abut.

[0015] As a further improvement to the technical solution disclosed in this invention, the inner vertical plate also has through snap-fit ​​holes, the number of snap-fit ​​holes being equal to the number of hollow holes, the snap-fit ​​holes being located directly above the hollow holes, and the top of the insert having a barb section that can be inserted into the snap-fit ​​holes.

[0016] The above technical solution has produced the following beneficial technical effects in practical applications: the barbed section and the snap-fit ​​hole can be assembled with each other, so that the outer shell and the inner shell have a certain degree of snap-fit ​​firmness and will not loosen under a certain amount of external force.

[0017] As a further improvement to the technical solution disclosed in this invention, the width of the snap-fit ​​hole is equal to the width of the hollow hole, and the vertical dimension of the snap-fit ​​hole is smaller than the vertical dimension of the hollow hole.

[0018] The above technical solution has produced the following beneficial technical effects in practical applications: the vertical dimension of the hollow hole is relatively large, which makes it convenient for the insert to pass through from bottom to top.

[0019] As a further improvement to the technical solution disclosed in this invention, the projections of the outlines of the hollow holes and snap-fit ​​holes are all rounded rectangles along the direction perpendicular to the surface of the inner vertical plate.

[0020] The above technical solution has produced the following beneficial technical effects in practical applications: the outlines of the hollow holes and snap-fit ​​holes do not have internal corners, and stress concentration is not easily generated on the outer shell.

[0021] As a further improvement to the technical solution disclosed in this invention, the root of the insert is an upper extension section integrally connected to the vertical main board, and the top of the upper extension section and the top of the barb section are integrally connected by an outwardly curved section; along the direction from top to bottom, the vertical distance from the outwardly curved section and the barb section to the outer shell gradually increases.

[0022] The above technical solution has produced the following beneficial technical effects in practical applications: the design of the outward-curving section utilizes its own slanted trend, which facilitates the insertion strip to pass through the hollow hole and reduces the accuracy during alignment.

[0023] As a further improvement to the technical solution disclosed in this invention, the acute angle between the surface of the barbed section and the inner vertical plate is greater than the acute angle between the surface of the outer curved section and the inner vertical plate.

[0024] The above technical solution has produced the following beneficial technical effects in practical applications: it shows that the barbed section and the outward-curved section are not completely fitted together, but rather have an opening at the bottom, which makes it convenient for the barbed section to be inserted into the snap-fit ​​hole.

[0025] As a further improvement to the technical solution disclosed in this invention, the two ends of the boundary line between the barbed segment and the outward-curved segment are provided with notches, and the notches shorten the length of the boundary line between the barbed segment and the outward-curved segment.

[0026] The above technical solution has produced the following beneficial technical effects in practical applications: the notch can be processed by punching, and the top of the insert is narrowed at the notch, further reducing the precision requirements when assembling the outer shell and inner shell.

[0027] As a further improvement to the technical solution disclosed in this invention, the bottom edge of the barb segment has an outer rounded corner.

[0028] The above technical solution has produced the following beneficial technical effects in practical applications: it also facilitates the smooth assembly of the barbed section and the snap-fit ​​hole.

[0029] As a further improvement to the technical solution disclosed in this invention, the lengths of the upper extension, the outer curved section, and the hooked section after straightening are equal to the lengths of the arc bend and the lower fold after straightening.

[0030] The above technical solution has produced the following beneficial technical effects in practical applications: each insert is formed by cutting two parallel slits in the lower folding plate and then folding it over.

[0031] As a further improvement to the technical solution disclosed in this invention, the inner vertical plate, the outer vertical plate, and the horizontal strip are integrally connected with a folded edge on the same side, and the inner vertical plate, the outer vertical plate, and the horizontal strip all intersect the folded edge perpendicularly.

[0032] The above technical solution has produced the following beneficial technical effects in practical applications: the folded edge strengthens the structural strength of the outer shell and is perpendicular to the horizontal bar, which strengthens the bending structural strength of the outer shell in all directions.

[0033] As a further improvement to the technical solution disclosed in this invention, the inner vertical plate, the outer vertical plate, and the horizontal strip are all integral metal plates of equal thickness, and the vertical main plate, the lower folding plate, and the arc bending part are also integral metal plates of equal thickness.

[0034] The above technical solution has produced the following beneficial technical effects in practical applications: both the outer shell and the inner shell can be punched and bent from flat metal sheets of the same specifications.

[0035] As a further improvement to the technical solution disclosed in this invention, the distance between the inner vertical plate and the outer vertical plate is not less than the thickness of the vertical main plate and is less than twice the thickness of the vertical main plate.

[0036] The above technical solution has produced the following beneficial technical effects in practical applications: along the direction perpendicular to the surface of the outer shell and the inner shell, the outer shell and the inner shell are not easy to loosen, and the horizontal strip is not easy to slip off the arc bend.

[0037] A forming process, including the 3C stamping parts mentioned above, comprises the following forming steps: Step 1: A punching machine punches the outer shell in its unfolded state, punching out snap-fit ​​holes and hollow holes in its flat state; Step 2: The outer shell and inner shell are fitted together, and the junction of the top of the outer vertical plate and the horizontal strip is simultaneously bent with the arc-shaped bending section by a bending machine; Step 3: The outer shell is removed from the bending machine, and the bending machine continues to bend the arc-shaped bending section of the inner shell; Step 4: The bending machine bends the junction of the outward-curved section and the barbed section; Step 5: The bending machine bends the junction of the upper extension section and the outward-curved section.

[0038] The aforementioned beneficial technical effects are as follows: First, the outer shell is punched before bending, which facilitates the processing of the three-dimensional hollowed-out holes. Second, the most critical contact points between the outer and inner shells can be bent simultaneously, ensuring that the position and accuracy after bending meet the requirements for subsequent vertical support. Third, the bending angle of the arc-shaped bend in the inner shell is greater than 90°, so further bending is necessary. The purpose of placing step four before step five is to facilitate processing. If step five were placed before step four, the hook section would be affected, and the bending machine would lack a position to apply force. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a front view of one embodiment of the present invention;

[0041] Figure 2 This is a cross-sectional view (AA) of one embodiment of the present invention;

[0042] Figure 3 This is a BB cross-sectional view of one embodiment of the present invention;

[0043] Figure 4 This is a perspective view of one embodiment of the present invention;

[0044] Figure 5 This is a partial enlarged view of point C in one embodiment of the present invention;

[0045] Figure 6 This is a perspective view of one embodiment of the present invention;

[0046] Figure 7 This is a partial enlarged view of point D in one embodiment of the present invention;

[0047] Figure 8 This is an exploded view of one embodiment of the present invention;

[0048] Figure 9 This is a partial enlarged view of point E in one embodiment of the present invention;

[0049] Figure 10 This is a partial enlarged view of point F in one embodiment of the present invention.

[0050] 1-Outer shell; 2-Inner shell; 3-Inner vertical plate; 4-Outer vertical plate; 5-Horizontal strip; 6-Folded edge; 7-Snap-fit ​​hole; 8-Hollow hole; 9-Vertical main plate; 10-Lower fold plate; 11-Arc bending section; 12-Upper extension section; 13-Nook section; 14-Outwardly curved section; 15-Hooked section; 16-Outer rounded corner; 17-Notch. Detailed Implementation

[0051] In the description of this invention, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] The following detailed description of the invention, in conjunction with specific embodiments, further illustrates the present invention. A 3C stamping component includes: an outer shell 1, comprising an inner vertical plate 3 and an outer vertical plate 4 parallel to each other, with a horizontal strip 5 integrally connected vertically to the bottom of the inner vertical plate 3 and the top of the outer vertical plate 4; an inner shell 2, comprising a vertical main plate 9 in surface contact with the outer vertical plate 4, with a lower folding plate 10 attached to the side of the vertical main plate 9 facing away from the outer shell 1, the tops of the vertical main plate 9 and the lower folding plate 10 being integrally connected by an arc-shaped bend 11, the radius of curvature of the outer wall of the arc-shaped bend 11 being greater than the thickness of the vertical main plate 9 or the lower folding plate 10; a hollow hole 8, each hollow hole 8 intersecting with the inner vertical plate 3, the outer vertical plate 4, and the horizontal strip 5, the opening of the hollow hole 8 being a three-dimensional opening; and an insert, the lower folding plate 10 having a cut and upturned insert, such as... Figure 5 , Figure 7 As shown, the insert passes through the hollow hole 8; the top of the arc-shaped bend 11 abuts against the lower surface of the horizontal strip 5.

[0053] like Figure 3 As shown, in some other embodiments of the present invention, the inner vertical plate 3, the outer vertical plate 4, and the horizontal strip 5 are all connected by rounded corners, and the width of the horizontal strip 5 is greater than the radius of curvature of the outer wall of the arc bend 11. The inner vertical plate 3 also has through-holes 7, the number of which is equal to the number of openwork holes 8. The 7 is located directly above the openwork holes 8, and the top of the insert has a barb section 15 that is inserted into the 7.

[0054] In other embodiments of the present invention, the width of the snap-fit ​​hole 7 is equal to the width of the cutout hole 8, and the vertical dimension of the snap-fit ​​hole 7 is smaller than the vertical dimension of the cutout hole 8. Along the direction perpendicular to the surface of the inner vertical plate 3, the projections of the outlines of the cutout hole 8 and the snap-fit ​​hole 7 are both rounded rectangles.

[0055] like Figure 2 , Figure 7 As shown, in some other embodiments of the present invention, the root of the insert is an upper extension 12 integrally connected to the vertical main board 9, and the top of the upper extension 12 and the top of the barbed section 15 are integrally connected by an outwardly curved section 14; along the direction from top to bottom, the vertical distance from the outwardly curved section 14 and the barbed section 15 to the outer shell gradually increases.

[0056] like Figure 2As shown, the acute angle between the surface of the hook section 15 and the inner vertical plate 3 is greater than the acute angle between the surface of the outer curved section 14 and the inner vertical plate 3.

[0057] like Figure 10 As shown, the two ends of the boundary line between the barbed segment 15 and the outward-curving segment 14 have notches 17, which shorten the length of the boundary line between the barbed segment 15 and the outward-curving segment 14. The bottom edge of the barbed segment 15 has an outer rounded corner 16.

[0058] In some other embodiments of the present invention, the lengths of the upper extension 12, the outward curve 14, and the barbed section 15 after being straightened are equal to the lengths of the arc bend 11 and the lower fold plate 10 after being straightened.

[0059] like Figure 8 As shown, the inner vertical plate 3, outer vertical plate 4, and horizontal strip 5 are integrally connected on the same side by a folded edge 6, and each of the inner vertical plate 3, outer vertical plate 4, and horizontal strip 5 intersects the folded edge perpendicularly. The inner vertical plate 3, outer vertical plate 4, and horizontal strip 5 are all integral metal plates of equal thickness. The vertical main plate 9, lower folded plate 10, and arc-shaped bend 11 are also integral metal plates of equal thickness. The distance between the inner vertical plate 3 and the outer vertical plate 4 is not less than the thickness of the vertical main plate 9 and less than twice the thickness of the vertical main plate 9.

[0060] The molding process involves the following steps;

[0061] Step 1: The punching machine punches the outer shell 1 in its unfolded state to punch out the snap-fit ​​hole 7 and the hollow hole 8 in its flat state;

[0062] Step 2: The outer shell 1 and the inner shell 2 are fitted together. The junction of the top of the outer vertical plate 4 and the horizontal strip 5 is bent synchronously with the arc bending part 11 by a bending machine.

[0063] Step 3: The outer shell 1 is removed from the bending machine, and the bending machine continues to bend the arc-shaped bending part 11 of the inner shell 2;

[0064] Step 4: The bending machine bends the junction of the outward-curving section 14 and the hook section 15.

[0065] Step 5: The bending machine bends the junction of the upper extension section 12 and the outer curved section 14.

[0066] like Figure 5 , Figure 8 As shown, the insert is formed by folding a portion of the lower fold plate 10, and the folded insert forms a corresponding empty part 13.

[0067] like Figure 8 As shown, there are at least two hollow holes 8.

[0068] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A 3C stamping part, characterized in that, include: The outer shell includes an inner vertical plate and an outer vertical plate that are parallel to each other, and the bottom of the inner vertical plate and the top of the outer vertical plate are connected vertically by an integral horizontal strip; The inner shell includes a vertical main plate that forms a surface contact with the outer vertical plate. A lower folding plate is attached to the side of the vertical main plate that is away from the outer shell. The tops of the vertical main plate and the lower folding plate are integrally connected by an arc bending part. The radius of curvature of the outer wall of the arc bending part is greater than the thickness of the vertical main plate or the lower folding plate. The hollowed-out holes intersect with the inner vertical plate, the outer vertical plate, and the horizontal strip, and the openings of the hollowed-out holes are three-dimensional openings; Insert, the lower folding plate has a cut and upturned insert, the insert passing through a hollow hole; The top of the arc-shaped bend abuts against the lower surface of the horizontal strip; the inner vertical plate also has through snap-fit ​​holes, the number of snap-fit ​​holes being equal to the number of openwork holes, the snap-fit ​​holes being located directly above the openwork holes, and the top of the insert strip having a barb section that can be inserted into the snap-fit ​​holes.

2. The 3C stamping part according to claim 1, characterized in that, The inner vertical plate, the outer vertical plate, and the horizontal strip are all connected by rounded corners, and the width of the horizontal strip is greater than the radius of curvature of the outer wall of the arc bend.

3. The 3C stamping part according to claim 1, characterized in that, The width of the snap-fit ​​hole is equal to the width of the cutout hole, and the vertical dimension of the snap-fit ​​hole is smaller than the vertical dimension of the cutout hole.

4. The 3C stamping part according to claim 1, characterized in that, Along the direction perpendicular to the surface of the inner vertical plate, the projections of the outlines of the hollow holes and snap-fit ​​holes are all rounded rectangles.

5. The 3C stamping part according to claim 1, characterized in that, The root of the insert is an upper extension that is integrally connected to the vertical motherboard. The top of the upper extension and the top of the barb section are integrally connected by an outward-curving section. The vertical distance from the outward-curving section and the barb section to the outer shell gradually increases from top to bottom.

6. The 3C stamping part according to claim 5, characterized in that, The acute angle between the surface of the barbed section and the inner vertical plate is greater than the acute angle between the surface of the outer curved section and the inner vertical plate.

7. The 3C stamping part according to claim 5, characterized in that, The boundary line between the barbed segment and the outward-curved segment has gaps at both ends, and the gaps shorten the length of the boundary line between the barbed segment and the outward-curved segment.

8. The 3C stamping part according to claim 5, characterized in that, The bottom edge of the barbed section has an outer rounded corner.

9. The 3C stamping part according to claim 5, characterized in that, The lengths of the upper extension, the outward curve, and the hook section after straightening are equal to the lengths of the arc bend and the lower fold after straightening.

10. The 3C stamping part according to claim 1, characterized in that, The inner vertical plate, outer vertical plate, and horizontal strip are integrally connected on the same side with a folded edge, and each of the inner vertical plate, outer vertical plate, and horizontal strip intersects the folded edge perpendicularly.

11. The 3C stamping part according to claim 1, characterized in that, The inner vertical plate, outer vertical plate, and horizontal strip are all integral metal plates of equal thickness, as are the vertical main plate, lower fold plate, and arc-shaped bend.

12. The 3C stamping part according to claim 1, characterized in that, The distance between the inner vertical plate and the outer vertical plate is not less than the thickness of the vertical main plate and is less than twice the thickness of the vertical main plate.

13. A molding process, characterized in that, Including the 3C stamping parts as described in any one of claims 5 to 9, the forming steps are as follows; 1) The punching machine punches the outer shell in its unfolded state to create snap-fit ​​holes and hollow holes in its flat state; 2) The outer shell and the inner shell are fitted together, and the junction of the top of the outer vertical plate and the horizontal strip is bent synchronously with the arc bending part by a bending machine; 3) The outer shell is detached from the bending machine, while the bending machine continues to bend the arc-shaped bending portion of the inner shell; 4) The bending machine bends the junction of the outward-curved section and the hook section; The bending machine bends the junction between the upper extension section and the outer curved section.

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