Back plate reinforcing rib production process and back plate
By designing the reinforcement ribs in the micro-bar position and setting appropriate cavity and punches in the stamping mold, the problems of unevenness and thickness of the back plate caused by traditional back plate reinforcement ribs are solved, and the back plate is thinner and thinner and cost reduction of automated production is achieved.
Patent Information
- Application Number
- CN202411712601.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-25
AI Technical Summary
In the traditional TV backplane stamping process, in order to ensure the strength of the backplane, multiple large-size reinforcement ribs need to be stamped on the backplane, resulting in the backplane not being flat enough and the use of a universal sponge suction cup for automated production, which increases production costs, and the overall thickness of the backplane increases, which does not conform to the development trend of lightweight TVs.
The reinforcement ribs in the micro-bar position are designed to replace the traditional large-sized reinforcement ribs. By setting the bottom punch and top cavity in the stamping die, the reinforcement ribs are hulled during stamping, and additional extrusion is performed at the R corners at both ends of the reinforcement ribs.
The thickness of the back plate is reduced, the flatness of the back plate is improved, the requirements of lightweighting of the TV are met, the strength of the local material is enhanced, the amplitude of material stretching is reduced, and the phenomenon of easy fissure of the ribs is avoided. In addition, the general sponge suction cup can be used for automated production, reducing production costs.
Smart Images
Figure CN119500840A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of stamping technology, and in particular to a back plate reinforcement rib production process and a back plate. Background Art
[0002] The back panel is an important component of the TV. The LCD screen, motherboard, power supply, light strip and other components are all installed on the back panel. It is generally stamped out of metal sheet and has internal threads processed at set positions to facilitate installation.
[0003] In the traditional TV back panel stamping process, in order to ensure the strength of the back panel, many reinforcing ribs are stamped out on the back panel. However, since the reinforcing ribs are processed by stretching the material, the size of the reinforcing ribs is generally large, such as Figure 1 As shown in the figure, the back panel is not flat enough due to the presence of the reinforcement ribs. In automated production, it is impossible to use a general sponge suction cup for suction. Only a special suction cup can be designed for automated production, which increases production costs. In addition, the overall thickness of the back panel increases, which does not conform to the trend of thinner and lighter TVs. Since the reinforcement ribs are processed by stretching the material, the ribs are prone to tearing, which places high demands on the material.
[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention
[0005] The present invention provides a backboard reinforcement rib production process and a backboard, thereby effectively solving the problems in the background technology.
[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a back plate reinforcement rib production process, comprising the following steps: Design micro-rib reinforcement to replace the original reinforcement on the back plate; A bottom punch and a top cavity are respectively arranged in the stamping die, and the bottom punch and the top cavity cooperate with each other to perform convex hull forming on the reinforcing rib during stamping; Wherein, the bottom punch and the top cavity extrude the material at the R corners at both ends of the reinforcing rib during the convex hull forming.
[0007] Furthermore, the reinforcing ribs at the designed micro-rib positions replace the original reinforcing ribs on the back plate, comprising the following steps: Design the rib strength of the micro-ribs according to the target structural strength and the back plate material, and calculate the cavity depth and diameter; Calculate the material flow rate of the rib at the R angles at both ends; Calculating the top cavity diameter and the bottom punch diameter according to the cavity depth and diameter; According to the material flow rate, the top cavity and bottom punch transition curvature radii at the R corner of the reinforcing rib are calculated.
[0008] Furthermore, the diameter of the bottom punch is greater than the diameter of the top cavity, and the corresponding relationship is: D c =D h + 0.1 t~ 0.3 t ; Where D c is the diameter of the bottom punch, D h is the diameter of the top cavity, t is the back panel thickness.
[0009] Furthermore, the length of the top cavity in the direction of the corresponding reinforcing rib cross section is smaller than the length of the bottom punch in the direction of the corresponding reinforcing rib cross section.
[0010] Furthermore, the transition radius of curvature of the top cavity at the corresponding rib R angle is smaller than the transition radius of curvature of the bottom punch, and the corresponding relationship is: R c = R t +0.3 t ~0.5 t ; In the formula, R c is the transition radius of curvature of the bottom punch, R t is the transition radius of curvature of the top cavity, t is the back panel thickness.
[0011] Further, according to the material flow rate, the gap between the top cavity and the bottom punch is designed, including: The clearance between the top cavity and the bottom punch at the diameter G D for: G D = 1.1 t ∼1.3 t ; t is the back plate thickness; The clearance between the top cavity and the bottom punch at the transition radius of curvature G R for: G R = 0.6 t ~0.8t .
[0012] Furthermore, the reinforcing ribs at the designed micro-rib positions replace the original reinforcing ribs on the back panel, and the protruding height of the reinforcing ribs at the micro-rib positions is less than 2 times the thickness of the back panel material.
[0013] The present invention also includes a back plate including reinforcing ribs, wherein the reinforcing ribs are produced using the reinforcing rib production process as described above.
[0014] The beneficial effects of the present invention are as follows: micro-rib reinforcement ribs are used to replace traditional large-size reinforcement ribs to reduce the thickness of the back panel and improve the flatness, thereby meeting the requirements of thin and light televisions; the stamping die comprises a bottom punch and a top cavity, and during the stamping process, the bottom punch and the top cavity work together to complete the convex hull forming of the reinforcement ribs, and the R-angle areas at both ends of the reinforcement ribs are subjected to additional extrusion treatment during forming; thereby enhancing the local material strength, which is different from the material stretching of traditional reinforcement ribs. Since the R-angle areas at both ends of the reinforcement ribs are extruded, the rib strength is significantly improved, ensuring the structural stability of the back panel under thinning conditions, the stretching amplitude of the rib material is reduced, avoiding the phenomenon of easy tearing at the rib position, reducing the material strength requirement, and expanding the range of material selection; the back panel surface is smoother, and a universal sponge suction cup can be used for automated production, eliminating the step of designing a special suction cup and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a structural schematic diagram of the background technology of the present invention; Figure 2 is a flow chart of the method of the present invention; Figure 3 It is a schematic diagram of the structure of the bottom punch and the top cavity; Figure 4 It is a schematic structural diagram of the backplane of the present invention. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0018] like Figure 2 As shown: A back plate reinforcement rib production process, comprising the following steps: Design micro-rib reinforcement to replace the original reinforcement on the back plate; A bottom punch and a top cavity are respectively arranged in the stamping die, and the bottom punch and the top cavity cooperate with each other to perform convex hull forming on the reinforcing rib during stamping; Among them, the bottom punch and the top cavity extrude the material at the R corners at both ends of the reinforcing rib during the convex hull forming.
[0019] Micro-rib reinforcement ribs are used to replace traditional large-size reinforcement ribs to reduce the thickness of the back panel and improve the flatness, thereby meeting the requirements of thin and light TVs; the stamping die includes a bottom punch and a top cavity. During the stamping process, the bottom punch and the top cavity work together to complete the convex hull forming of the reinforcement rib, and the R-angle areas at both ends of the reinforcement rib are subjected to additional extrusion treatment during forming; thereby enhancing the local material strength. Unlike the material stretching of traditional reinforcement ribs, the R-angle areas at both ends of the reinforcement rib are extruded, which significantly improves the rib strength and ensures the structural stability of the back panel under thinning conditions. The stretching amplitude of the rib material is reduced to avoid the phenomenon of easy cracking at the rib position, reduce the material strength requirements, and expand the range of material selection; the back panel surface is smoother, and a universal sponge suction cup can be used for automated production, eliminating the step of designing a special suction cup and reducing production costs.
[0020] In this embodiment, the reinforcing ribs at the micro-rib positions are designed to replace the original reinforcing ribs on the back plate, including the following steps: Design the rib strength of the micro-ribs according to the target structural strength and the back plate material, and calculate the cavity depth and diameter; Calculate the material flow rate of the rib at the R angles at both ends; Calculate the top cavity diameter and bottom punch diameter based on the cavity depth and diameter; According to the material flow rate, calculate the transition radius of curvature of the top cavity and bottom punch at the R corner of the rib.
[0021] Determine the depth and diameter of the mold cavity based on the rib position design parameters: Cavity depth 𝐻: ; T: backplane material thickness; Fs: Strength factor of target reinforcement position (adjusted according to specific load requirements); : Yield strength of the material; Cavity diameter D : ; A: Cross-sectional area at the bottom of the rib (adjusted according to the rib size).
[0022] Among them, the diameter of the bottom punch is larger than the diameter of the top cavity, and the corresponding relationship is: D c =D h + 0.1 t~ 0.3 t ; Where D c is the diameter of the bottom punch, D h is the diameter of the top cavity, t is the back panel thickness.
[0023] The diameter of the bottom punch is larger than the diameter of the top cavity, which can exert additional extrusion on the material during stamping. This design forms a reasonable material flow gradient at the R angle of the micro-ribs to prevent the material from cracking due to excessive stretching during processing. The larger bottom punch diameter increases the compression deformation of the micro-ribs during forming, enhances the local strength of the micro-ribs, and improves the overall rigidity of the back plate. By controlling the diameter difference between the punch and the cavity, the material rebound after rib forming is reduced, ensuring the stability of the rib shape and size.
[0024] Among them, the length of the top cavity in the direction of the corresponding rib section is shorter than the length of the bottom punch in the direction of the corresponding rib section. This limits the lateral flow of the material, concentrates the extrusion effect on the rib area, improves the accuracy and forming effect of the rib position, increases the extrusion coverage, ensures the forming strength of the micro-rib position, and reduces the stress concentration during processing to avoid cracking of the material at both ends of the rib position. The shorter length of the top cavity effectively restricts the lateral diffusion of the material during the stamping process, forcing more material to flow to the micro-rib position area, thereby improving the density of the rib. The longer length of the bottom punch provides sufficient support area to ensure the stable flow of the material and reduce the strain gradient of the material at both ends of the rib position. The material at both ends of the rib is subjected to asynchronous extrusion and stretching. The limitation of the length of the top cavity and the support of the bottom punch reduce the local stress concentration and the risk of cracks or failure at the rib position.
[0025] like Figure 3 As shown in the figure, the transition radius of curvature of the top cavity at the corresponding rib R angle is smaller than the transition radius of curvature of the bottom punch, and the corresponding relationship is: R c = R t +0.3 t ~0.5 t ; In the formula, R c is the transition radius of curvature of the bottom punch, R t is the transition radius of curvature of the top cavity,t is the back panel thickness.
[0026] The difference in transition curvature radius between the bottom punch and the top cavity effectively controls the material flow path and ensures the high density and stability of the micro-ribs. Improving the design of transition curvature radius improves the adaptability of the mold and the reliability of the processing process, reducing defects in production. It can effectively improve the molding quality of the micro-ribs of the TV back panel, reduce material cracking and deformation, further improve production efficiency and reduce production costs.
[0027] In this embodiment, according to the material flow rate, the gap between the top cavity and the bottom punch is also designed, including: Clearance between top cavity and bottom punch at diameter G D for: G D = 1.1 t ∼1.3 t ; t is the back plate thickness; Clearance between top cavity and bottom punch at transition radius of curvature G R for: G R = 0.6 t ~0.8 t .
[0028] A larger gap at the diameter helps the material flow, avoids excessive extrusion and stress concentration, and thus reduces cracks and deformation. A smaller gap at the excessive curvature radius can help control the flow of the material in the curvature area, avoiding uneven molding or cracks due to excessive or excessive flow. By controlling the gap at the excessive curvature radius, the deformation and stretching of the material can be effectively reduced, ensuring the shape and dimensional accuracy of the micro-ribs.
[0029] As a preferred embodiment of the above, reinforcing ribs at micro-rib positions are designed to replace the original reinforcing ribs on the back panel, and the protruding height of the reinforcing ribs at the micro-rib positions is less than 2 times the thickness of the back panel material.
[0030] If the height of the micro-ribs is designed too high, the back panel will not be flat enough, and the requirements for the molding mold will be high, which will increase the production cost. Properly controlling the height of the ribs will help to reduce the impact of material stretching while ensuring the strength of the ribs, and ensure the dimensional accuracy and shape consistency of the ribs.
[0031] like Figure 4 As shown, this embodiment also includes a backboard, which is preferred over the above embodiment and includes reinforcing ribs, and the reinforcing ribs are produced using the reinforcing rib production process as described above.
[0032] Micro-rib reinforcement ribs are used to replace traditional large-size reinforcement ribs to reduce the thickness of the back panel and improve the flatness, thereby meeting the requirements of thin and light TVs; the stamping die includes a bottom punch and a top cavity. During the stamping process, the bottom punch and the top cavity work together to complete the convex hull forming of the reinforcement rib, and the R-angle areas at both ends of the reinforcement rib are subjected to additional extrusion treatment during forming; thereby enhancing the local material strength. Unlike the material stretching of traditional reinforcement ribs, the R-angle areas at both ends of the reinforcement rib are extruded, which significantly improves the rib strength and ensures the structural stability of the back panel under thinning conditions. The stretching amplitude of the rib material is reduced to avoid the phenomenon of easy cracking at the rib position, reduce the material strength requirements, and expand the range of material selection; the back panel surface is smoother, and a universal sponge suction cup can be used for automated production, eliminating the step of designing a special suction cup and reducing production costs.
[0033] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.
[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0036] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.
[0037] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.
[0038] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
[0039] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.
[0040] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A back plate reinforcement rib production process, characterized in that: The steps include: Design micro-rib reinforcement to replace the original reinforcement on the back plate; A bottom punch and a top cavity are respectively arranged in the stamping die, and the bottom punch and the top cavity cooperate with each other to perform convex hull forming on the reinforcing rib during stamping; Wherein, the bottom punch and the top cavity extrude the material at the R corners at both ends of the reinforcing rib during the convex hull forming.
2. The back plate reinforcement rib production process according to claim 1, characterized in that: The reinforcing ribs at the micro-rib positions are designed to replace the original reinforcing ribs on the back plate, and the steps include: Design the rib strength of the micro-ribs according to the target structural strength and the back plate material, and calculate the cavity depth and diameter; Calculate the material flow rate of the rib at the R angles at both ends; Calculating the top cavity diameter and the bottom punch diameter according to the cavity depth and diameter; According to the material flow rate, the top cavity and bottom punch transition curvature radii at the R corner of the reinforcing rib are calculated.
3. The back plate reinforcement rib production process according to claim 2, characterized in that: The diameter of the bottom punch is greater than the diameter of the top cavity, and the corresponding relationship is: D c =D h + 0.1 t~ 0.3 t ； Where D c is the diameter of the bottom punch, D h is the diameter of the top cavity, t is the back panel thickness.
4. The back plate reinforcement rib production process according to claim 2, characterized in that: The length of the top cavity in the direction of the corresponding reinforcing rib cross section is smaller than the length of the bottom punch in the direction of the corresponding reinforcing rib cross section.
5. The back plate reinforcement rib production process according to claim 2, characterized in that: The transition radius of curvature of the top cavity at the corresponding rib R angle is smaller than the transition radius of curvature of the bottom punch, and the corresponding relationship is: R c = R t +0.3 t ~0.5 t ； In the formula, R c is the transition radius of curvature of the bottom punch, R t is the transition radius of curvature of the top cavity, t is the back panel thickness.
6. The back plate reinforcement rib production process according to claim 2, characterized in that: Based on the material flow rate, it also includes designing the gap between the top cavity and the bottom punch, including: The clearance between the top cavity and the bottom punch at the diameter G D for: G D = 1.1 t ∼1.3 t ; t is the back plate thickness; The clearance between the top cavity and the bottom punch at the transition radius of curvature G R for: G R = 0.6 t ~0.8 t .
7. The back plate reinforcement rib production process according to claim 1, characterized in that: The reinforcing ribs at the designed micro-rib positions replace the original reinforcing ribs on the back panel, and the protruding height of the reinforcing ribs at the micro-rib positions is less than 2 times the thickness of the back panel material.
8. A back plate, characterized in that: The invention comprises reinforcing ribs, wherein the reinforcing ribs are produced using the reinforcing rib production process according to any one of claims 1 to 7.