Processing method and device for bent edge of backboard and computer readable storage medium

Abstract

The invention discloses a machining method and device for a bent edge of a back plate and a computer readable storage medium. The side edge of the back plate is provided with the bent edge, and the outer end of the bent edge is a dead edge; the machining method comprises the steps that S1, a first section of the side edge of the back plate is bent through first bending equipment, and a first bent part with a first bent angle is formed; s2, the second section of the side edge is bent through second bending equipment, and a second bent part with a second bent angle is formed; and S3, leveling treatment is conducted on the first bent part based on the second bent part through leveling equipment, so that the first bent part is tightly attached to the second bent part to form a dead edge. The effective height of the bending male die can be increased, the anti-cracking capacity of the die is enhanced, the shutdown maintenance frequency is reduced, and the reject ratio of products is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of backplanes, and in particular to a processing method and device for a bent edge of a backplane, and a computer-readable storage medium. Background Art

[0002] There is generally a hook-shaped forming structure 1 on the side of the backplane product structure. The existing forming process is as Figure 1 shown: first bend, bevel, flatten and then bend again. The existing solution uses a slider (bending male die 2) stripping method to solve the problem of non-stripping during bending. Since the distance between the flattened edge and the inner folding line of the bend is fixed, the slider needs to make way for the flattened edge. Figure 2 As shown in the figure, the effective height (including the wire pressing height) of the bending male die is only 1.0 mm, resulting in relatively weak effective strength of the bending male die, so that the mold often breaks the slider during the production process, leading to a high product defect rate. At the same time, it is necessary to stop the production line and wait for the newly manufactured slider, and the replacement time of the newly manufactured slider is relatively long. Therefore, the production efficiency of the product is low. It can be seen that the small effective height of the bending male die and the long manufacturing time of the slider seriously affect the production efficiency of the production line and the product quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a processing method and device for a bent edge of a backplane, and a computer-readable storage medium, which can increase the effective height of the bending male die, enhance the anti-cracking ability of the mold, reduce the frequency of shutdown maintenance, and reduce the product defect rate.

[0004] To solve the above technical problem, in the first aspect of the present invention, a processing method for a bent edge of a backplane is disclosed. The side of the backplane has a bent edge, and the outer end of the bent edge is a dead edge. The processing method includes:

[0005] Step S1: Bend the first section of the side of the backplane through a first bending device to form a first bent portion with a first bending angle;

[0006] Step S2: Bend the second section of the side through a second bending device to form a second bent portion with a second bending angle;

[0007] Step S3: Flatten the first bent portion based on the second bent portion through a flattening device so that the first bent portion closely adheres to the second bent portion to form a dead edge.

[0008] As an optional implementation manner, in the first aspect of the present invention, the first bending angle is 80°-95°, and the second bending angle is 80°-95°.

[0009] As another optional implementation manner, in the first aspect of the present invention, the second bending device is a swing stripping die, including:

[0010] A bending male which can swing around an axis, and a working end surface of which is provided with a forming surface matching the second bending portion;

[0011] A bending head applies pressure to the second section of the side edge so that the second section of the side edge fits with the working end surface of the bending male to form the second bending portion;

[0012] Ejector pin mechanism linked with bending rod;

[0013] The spring driven system is configured to push the ejector pin mechanism during the demolding stage to cause the bending pin to swing out of the bending edge.

[0014] As another optional embodiment, in the first aspect of the present invention, in step S2, the demoulding stage of the swing stripping mold includes the following linkage actions:

[0015] S21. When the mold is closed, the spring drive system is in a compressed and stored state, and the bending male is in a position locked state;

[0016] S22. The bending head applies pressure to the second section of the side so that the second section of the side fits with the working end surface of the bending male to form the second bending portion;

[0017] S23. Demolding operation: the spring drive system releases pressure, pushes the ejector pin mechanism to swing the bending axis 10° to 30°, so that the molding surface is separated from the second bending part and the back plate is ejected.

[0018] As another optional embodiment, in the first aspect of the present invention, the working end face of the bending male includes a first end face, a second end face and a third end face which are adjacent to each other in sequence; the first end face is spaced apart from the first section of the side edge, the second end face is closely attached to the second section of the side edge, and the third end face is closely attached to the side edge.

[0019] As another optional embodiment, in the first aspect of the present invention, the length of the second section of the side edge is 1.5-3 mm.

[0020] As another optional embodiment, in the first aspect of the present invention, the flattening device includes a supporting member and a flattening member; the supporting member abuts against the bottom of the second section of the side edge, and the flattening member applies pressure to the outer side of the first section of the side edge in a direction perpendicular to the first section of the side edge so that the inner side of the first section of the side edge fits against the top of the second section of the side edge.

[0021] The second aspect of the present invention discloses a device for processing the bent edge of a back panel, comprising a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps in the method disclosed in the first aspect of the present invention.

[0022] The third aspect of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the method disclosed in the first aspect of the present invention are implemented.

[0023] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0024] Compared with the prior art, the embodiments of the present invention improve the structural strength through process innovation: by the process of "double bending first and then flattening" (S1→S2→S3), replacing the traditional process of "bending→slanting→flattening→re-bending", the problem of insufficient effective height of the bending male caused by bending after flattening is solved; significantly enhance the durability of the mold: increase the effective height of the bending male, greatly enhance the anti-cracking ability of the mold, reduce the frequency of shutdown maintenance, and reduce the defective rate of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is a process schematic diagram of an existing processing method for the bent edge of a backplane disclosed in an embodiment of the present invention;

[0027] Figure 2 is a partial processing schematic diagram of an existing processing method for the bent edge of a backplane disclosed in an embodiment of the present invention;

[0028] Figure 3 is a process schematic diagram of a processing method for the bent edge of a backplane disclosed in an embodiment of the present invention;

[0029] Figure 4 is a partial processing schematic diagram of a processing method for the bent edge of a backplane disclosed in an embodiment of the present invention;

[0030] Figure 5 is another partial processing schematic diagram of a processing method for the bent edge of a backplane disclosed in an embodiment of the present invention;

[0031] Figure 6 is a flow schematic diagram of a processing method for the bent edge of a backplane disclosed in an embodiment of the present invention;

[0032] Figure 7 is a structural schematic diagram of a processing device for the bent edge of a backplane disclosed in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solution in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0034] Embodiment 1

[0035] See Figure 1 , the embodiments of the present invention disclose a processing method for a bent edge of a backplane. The side edge 3 of the backplane has a bent edge, and the outer end of the bent edge is a dead edge 33; the processing method includes:

[0036] Step S1: Bend the first section of the side edge 3 of the backplane through a first bending device to form a first bent portion 31 with a first bending angle;

[0037] Step S2: Bend the second section of the side edge 3 through a second bending device to form a second bent portion 32 with a second bending angle;

[0038] Step S3: Flatten the first bent portion 31 based on the second bent portion 32 through a flattening device so that the first bent portion 31 closely adheres to the second bent portion 32 to form a dead edge 33.

[0039] The embodiments of the present invention improve the structural strength through process innovation: by the process of "double bending first and then flattening" (S1→S2→S3), replacing the traditional process of "bending→tilting→flattening→re-bending", it solves the problem of insufficient effective height of the bending male die 4 caused by bending after flattening; significantly enhances the durability of the die: improves the effective height of the bending male die 4 (as shown in the attached Figures 1 to 4 it is increased from 1.0 mm to 2.45 mm (a 145% increase)), greatly enhances the anti-cracking ability of the die, reduces the frequency of shutdown maintenance, and reduces the defective rate of products.

[0040] In an optional embodiment, the first bending angle is 80° to 95°, and the second bending angle is 80° to 95°.

[0041] In this embodiment, the bending angle is precisely controlled: the range of 80° to 95° ensures that the plastic deformation of the material of the bent portion is moderate, avoids excessive stress concentration, provides a reasonable angle margin for subsequent flattening (S3), and makes it easier for the first bent portion 31 to fit the second bent portion 32; improves process stability: the angle range has been verified by experiments to balance the bending accuracy and the die load.

[0042] In yet another optional embodiment, the second bending device is a swing stripping die, comprising:

[0043] The bending male 4 can swing around the axis 41, and its working end surface is provided with a forming surface matching the second bending portion 32;

[0044] A bending head (not shown in the drawings) applies pressure to the second section of the side edge 3 so that the second section of the side edge 3 fits with the working end surface of the bending male 4 to form the second bending portion 32;

[0045] A ejector pin mechanism 5 linked to the bending pin 4;

[0046] The spring drive system 6 is configured to push the ejector pin mechanism 5 during the demoulding stage to cause the bending pin 4 to swing and push out the bending edge.

[0047] In another optional embodiment, in step S2, the demoulding stage of the swing demoulding mold includes the following linkage actions:

[0048] S21. When the mold is closed, the spring drive system 6 is in a compressed and stored state, and the bending male 4 is in a position locked state;

[0049] S22. The bending head applies pressure to the second section of the side edge 3 so that the second section of the side edge 3 fits with the working end surface of the bending male 4 to form the second bending portion 32;

[0050] S23. Demolding operation: The spring drive system 6 releases the pressure, pushing the ejector pin mechanism 5 to swing the bending pin 4 around the axis 41 by 10° to 30°, so that the molding surface is separated from the second bending portion 32 and the back plate is ejected.

[0051] This embodiment innovates the demoulding mechanism through a swinging demoulding mold structure (bending male 4 + ejector pin + spring drive): the spring drive system (S23) provides stable demoulding power to avoid the structural jamming of the traditional slider for demoulding; the bending male 4 swings 10°~30° (S23) to achieve non-linear demoulding, and solves the interference of the flattened dead edge 33 on the demoulding path, thereby reducing the mold weight and simplifying maintenance; the overall swing block structure (compared with the traditional slider) is reduced in size and the manufacturing / replacement time is shortened; the ejector pin linkage design reduces the wear rate of parts.

[0052] In another optional embodiment, the working end faces of the bending male 4 include a first end face, a second end face and a third end face which are adjacent to each other in sequence; the first end face is spaced apart from the first section of the side edge 3, the second end face is close to the second section of the side edge 3, and the third end face is close to the side edge 3.

[0053] In this embodiment, the working end face of the bending male die 4 has a three-section design (the first end face is spaced, the second end face is in contact, and the third end face is closely attached). Precision forming control: The spacing between the first end face and the first section avoids bending interference and ensures the independence of the forming in the S1 process; the second end face being closely attached to the second section ensures the accuracy of the bending angle. Stress distribution optimization: The third end face is closely attached to the side 3, dispersing the force on the bending male die 4 and reducing the risk of cracking caused by local stress.

[0054] In yet another alternative embodiment, the length of the second section of the side 3 is 1.5 - 3 mm.

[0055] In this embodiment, setting the length of the second section to 1.5 - 3 mm can enable the bending male die to have a sufficiently large effective height (see Figure 4 ); Material utilization rate optimization: Limiting the length of the second section avoids excessive material waste; Process compatibility enhancement: The range of 1.5 - 3 mm is suitable for different thickness backplates, ensuring the structural strength of the bent part.

[0056] In yet another alternative embodiment, the flattening device includes a support member and a flattening member; the support member abuts against the bottom of the second section of the side 3, and the flattening member presses against the outside of the first section of the side 3 in a direction perpendicular to the first section of the side 3, so that the inside of the first section of the side 3 fits against the top of the second section of the side 3.

[0057] In this embodiment, the support member abuts against the bottom of the second section to prevent material rebound during the flattening process; the flattening member presses vertically to achieve gapless fitting between the first bent part 31 and the second bent part 32.

[0058] Embodiment Two

[0059] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of a processing device for the bent edge of a backplate disclosed in an embodiment of the present invention, including a memory 201, a processor 202, and a computer program stored on the memory. The processor executes the computer program to implement the steps in the method disclosed in Embodiment One.

[0060] Embodiment Three

[0061] An embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps in the method disclosed in Embodiment One.

[0062] The disclosure of the content disclosed in the embodiments of the present invention is only for the preferred embodiments of the present invention, and is only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for processing a bent edge of a back plate, wherein the side edge of the back plate has a bent edge, and the outer end of the bent edge is a dead edge; characterized in that: The processing method comprises: Step S1, bending a first section of the side of the back plate by a first bending device to form a first bending portion with a first bending angle; Step S2, bending the second section of the side edge by a second bending device to form a second bending portion with a second bending angle; Step S3: flattening the first bending portion based on the second bending portion by a flattening device, so that the first bending portion is closely attached to the second bending portion to form a dead edge.

2. The processing method according to claim 1, characterized in that: The first bending angle is 80° to 95°, and the second bending angle is 80° to 95°.

3. The processing method according to claim 1, characterized in that: The second bending device is a swing stripping die, comprising: A bending male which can swing around an axis, and a working end surface of which is provided with a forming surface matching the second bending portion; A bending head applies pressure to the second section of the side edge so that the second section of the side edge fits with the working end surface of the bending male to form the second bending portion; Ejector pin mechanism linked with bending rod; The spring driven system is configured to push the ejector pin mechanism during the demolding stage to cause the bending pin to swing out of the bending edge.

4. The processing method according to claim 3, characterized in that: In step S2, the demoulding stage of the swing demoulding mold includes the following linkage actions: S21. When the mold is closed, the spring drive system is in a compressed and stored state, and the bending male is in a position locked state; S22. The bending head applies pressure to the second section of the side so that the second section of the side fits with the working end surface of the bending male to form the second bending portion; S23. Demolding operation: the spring drive system releases pressure, pushes the ejector pin mechanism to swing the bending axis 10° to 30°, so that the molding surface is separated from the second bending part and the back plate is ejected.

5. The processing method according to claim 3, characterized in that: The working end face of the bending male includes a first end face, a second end face and a third end face which are adjacent to each other in sequence; the first end face is spaced apart from the first section of the side edge, the second end face is closely attached to the second section of the side edge, and the third end face is closely attached to the side edge.

6. The processing method according to claim 1, characterized in that: The length of the second section of the side edge is 1.5-3 mm.

7. The processing method according to claim 1, characterized in that: The flattening device includes a support member and a flattening member; the support member abuts against the bottom of the second section of the side edge, and the flattening member applies pressure to the outer side of the first section of the side edge perpendicular to the direction of the first section of the side edge so that the inner side of the first section of the side edge fits against the top of the second section of the side edge.

8. A device for processing the bent edge of a back plate, comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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