A method, device, equipment and storage medium for calculating the pressing force of a flexible pressing plate

Abstract

The present invention discloses a method, device, equipment and storage medium for calculating the pressing force of a flexible pressing plate, wherein the method comprises the steps of: sampling and testing the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material; calculating the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force; and obtaining the total pressing force of the final flexible pressing plate through the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force. The present application can accurately calculate the pressing force in the design stage of the pressing plate, and greatly shortens the mold development cycle and saves mold development costs.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile molds, and in particular to a method, device, equipment and storage medium for calculating the pressing force of a flexible pressing plate. Background Art

[0002] In recent years, my country's automobile industry has developed rapidly, and the popularity of cars has also greatly increased. In order to quickly occupy the market, most OEMs are constantly challenging the vehicle development cycle. The mold development cycle accounts for the largest proportion in vehicle development. In order to reduce the mold development cycle, many mold factories have proposed flexible press plate mold structure in recent years, which greatly shortens the mold development cycle.

[0003] At present, in the prior art, one is to use finite element analysis software to directly obtain the pressing force required for part molding, and design the pressure source of the pressing plate according to the simulated pressing force. The disadvantage is that the finite element analysis does not take into account the reaction force generated by the compressive strength of the polyurea resin material of the flexible pressing plate, resulting in calculation deviation. Second, the required pressing force is obtained according to the calculation formula and the molding content. The disadvantage is that when designing the flexible pressing plate, because the flexible material on the surface of the flexible pressing plate has a certain compressive strength, it will offset part of the pressing force, resulting in poor pressing effect in actual production, that is, the pressing force is inaccurate, and it is necessary to increase the pressure source and re-process and manufacture the pressing plate.

[0004] Therefore, how to accurately calculate the pressing force of flexible materials is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of the present invention is to provide a method, device, equipment and storage medium for calculating the pressing force of a flexible pressing plate, which can accurately calculate the pressing force during the design stage of the pressing plate, greatly shorten the mold development cycle, and save mold development costs.

[0006] In a first aspect, the present application provides a method for calculating the pressing force of a flexible pressing plate, wherein the method comprises the steps of:

[0007] Sampling and testing the flexible material in the flexible press plate to obtain the compression modulus of the flexible material;

[0008] Calculating the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force;

[0009] The total pressing force of the final flexible pressing plate is obtained through the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force.

[0010] In combination with the first aspect above, as an optional implementation method, the flexible material in the flexible pressing plate is sampled, and a compression test is performed on the sampled flexible material to obtain a stress-strain curve of the flexible material;

[0011] According to the stress-strain curve of the flexible material, the compression modulus of the flexible material is obtained, wherein the compression modulus is the degree of deformation of the flexible material under the action of compressive stress.

[0012] In combination with the first aspect above, as an optional implementation manner, determining the original thickness of the flexible material and the pressure value to be applied;

[0013] Applying the pressure value to the original thickness of the flexible material to obtain the thickness of the flexible material after compression;

[0014] The compression amount of the flexible material is calculated according to the difference between the original thickness and the thickness after compression.

[0015] In combination with the first aspect, as an optional implementation manner, the pressing area of ​​the flexible pressing plate is determined according to the design requirements of the flexible pressing plate.

[0016] In combination with the first aspect above, as an optional implementation method, according to the formula: P 压 =P+(E×Δd / d1×S)*10 2 , determine the total pressing force of the final flexible pressing plate, where P is the basic pressure of the flexible pressing plate, E is the compression modulus of the flexible material, Δd is the compression amount of the flexible material, d1 is the original thickness of the flexible material, and S is the pressing area of ​​the flexible pressing plate.

[0017] In combination with the first aspect above, as an optional implementation manner, it is determined whether the flexible material needs trimming or punching and / or flanging or shaping;

[0018] When it is determined that trimming or punching is required, according to the formula: Calculate the basic pressure of the flexible material, where t is the thickness of the sheet; τ is the shear strength of the sheet; L1 is the total molding line length of trimming or punching;

[0019] When it is determined that flanging or shaping is required, according to the formula: Calculate the basic pressure of the flexible pressing plate, where α is the pressing force per unit flanging or shaping length; σ is the tensile strength of the material; L2 is the total forming line length of the flanging or shaping;

[0020] When it is determined that trimming or punching and flanging or shaping are required, the basic pressure of the flexible pressing plate is calculated according to the formula: P=P1+P2.

[0021] In combination with the first aspect above, as an optional implementation manner, the number of pressure sources is determined according to the total pressing force of the flexible pressing plate.

[0022] In a second aspect, the present application provides a flexible pressing plate pressing force calculation device, the device comprising:

[0023] An acquisition module, which is used to perform sampling test on the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material;

[0024] A calculation module, which is used to calculate the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force;

[0025] A determination module is used to obtain the total pressing force of the final flexible pressing plate according to the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force.

[0026] In a third aspect, the present application further provides an electronic device, comprising: a processor; a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0027] In a fourth aspect, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any of the methods described in the first aspect.

[0028] The present application provides a method, device, equipment and storage medium for calculating the pressing force of a flexible pressing plate, wherein the method comprises the steps of: sampling and testing the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material; calculating the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force; and obtaining the total pressing force of the final flexible pressing plate through the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force. The present application can accurately calculate the pressing force during the design stage of the pressing plate, and greatly shortens the mold development cycle and saves mold development costs.

[0029] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0031] Figure 1 A flow chart of a method for calculating the pressing force of a flexible pressing plate provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of a flexible pressing plate pressing force calculation device provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of a flexible pressing plate provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of a computer-readable program medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0037] Furthermore, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the blocks shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.

[0038] The embodiments of the present application provide a method, device, equipment and storage medium for calculating the pressing force of a flexible pressing plate, which can accurately calculate the pressing force during the design stage of the pressing plate, greatly shorten the mold development cycle, and save mold development costs.

[0039] In order to achieve the above technical effects, the general idea of ​​this application is as follows:

[0040] A method for calculating the pressing force of a flexible pressing plate, the method comprising the steps of:

[0041] S101: Sampling and testing the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material.

[0042] S102: Calculate the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force.

[0043] S103: Obtaining the total pressing force of the final flexible pressing plate according to the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force.

[0044] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0045] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a method for calculating the pressing force of a flexible pressing plate provided by the present invention. Figure 1 As shown, the method comprises the steps of:

[0046] Step S101: Sampling and testing the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material.

[0047] Specifically, the flexible material in the flexible pressing plate is sampled, and a compression test is performed on the sampled flexible material to obtain a stress-strain curve of the flexible material. According to the stress-strain curve of the flexible material, a compression modulus of the flexible material is obtained, wherein the compression modulus is the degree of deformation of the flexible material under the action of compressive stress.

[0048] For ease of understanding, an example is given. The flexible material is sampled and tested. The sampling thickness of the flexible material is consistent with the design thickness of the flexible material of the press plate. Other parameters and test methods comply with the requirements of ISO 604-2002. The stress-strain curve of the flexible material is obtained through compression testing, thereby obtaining the compression modulus E in MPa. Among them, the compression modulus can describe the degree of deformation of the material under the action of compressive stress. It is a physical quantity that represents the response of the material to stress or strain and is used to measure the elastic properties of the material. When the compressive stress increases, the material will undergo compression deformation, that is, the volume will shrink, causing the material to undergo compression changes. The larger the compression modulus, the smaller the deformation capacity of the material, which means that the material is more difficult to compress. On the contrary, the smaller the compression modulus, the greater the deformation capacity of the material, which means that the material is more easily compressed.

[0049] Step S102: Calculate the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force.

[0050] Specifically, determining the original thickness of the flexible material and the pressure value to be applied;

[0051] Applying the pressure value to the original thickness of the flexible material to obtain the thickness of the flexible material after compression;

[0052] The compression amount of the flexible material is calculated according to the difference between the original thickness and the thickness after compression.

[0053] For example, the elastic modulus of a flexible material is 450MPa, but some companies use 500MPa. The compression is the value of the material being compressed. For example, if the original thickness of the material is 20mm and the thickness after compression is 19mm, then the compression is 20-19=1mm.

[0054] Optionally, the compression amount of the flexible material of the pressing plate Δd=design thickness d1-compressed thickness d2, wherein the recommended compression amount is designed to be 0.5 mm.

[0055] In one embodiment, the pressing area of ​​the flexible pressing plate is determined according to the design requirements of the flexible pressing plate. It is understandable that the pressing area S of the flexible pressing plate can be customized according to the requirements. For example, taking the trimming sequence of the outer panel of the hood of a vehicle as an example, according to the process scheme design, the trimming pressing area is 2×10 3 mm 2 ,

[0056] In one embodiment, it is determined whether the flexible material needs trimming or punching and / or flanging or shaping;

[0057] When it is determined that trimming or punching is required, according to the formula: Calculate the basic pressure of the flexible material, where t is the thickness of the sheet; τ is the shear strength of the sheet; L1 is the total molding line length of trimming or punching;

[0058] When it is determined that flanging or shaping is required, according to the formula: Calculate the basic pressure of the flexible pressing plate, where α is the pressing force per unit flanging or shaping length; σ is the tensile strength of the material; L2 is the total forming line length of the flanging or shaping;

[0059] When it is determined that trimming or punching and flanging or shaping are required, the basic pressure of the flexible pressing plate is calculated according to the formula: P=P1+P2.

[0060] It can be understood that the basic pressing force P required for molding is calculated based on the work content of this process, in tons:

[0061] Trimming / punching: Where P is the pressing force required for trimming / punching; t is the thickness of the sheet; τ is the shear strength of the sheet; L is the total molding line length of trimming / punching;

[0062] Flanging / shaping: Where P is the pressing force required for flanging / shaping; α is the pressing force per unit flanging / shaping length; σ is the tensile strength of the material; t is the sheet thickness; L is the total forming line length of flanging / shaping;

[0063] If the work content of this process is combined trimming / punching and flanging / shaping, the basic pressing force P is the superposition of the two.

[0064] That is to say, according to the needs, choose whether to trim / punch or flanging / shaping or both trimming / punching and flanging / shaping, and calculate different basic pressures according to different formulas.

[0065] It should be noted that 314 is the tensile strength parameter of the base material used in the experiment, and 0.8 is the thickness parameter of the base material used in the experiment. Other parameters are based on this parameter and converted in geometric proportion. Because the range of pressure is N / ㎡ and the unit of length L is mm, for the sake of unit uniformity, it is divided by 1000. It can be understood that these are the parameters (314, 0.8) obtained after the actual test of the project to obtain a relatively optimal state.

[0066] For example, if the tensile strength of the other part is 350 and the thickness is 1, then the factors are 350 / 314 and 1 / 0.8.

[0067] It can be understood that the compression modulus, compression amount, pressing area and basic pressing force are all parameters that take into account the reaction force brought about by the flexible pressing plate.

[0068] Step S103: Obtaining the total pressing force of the final flexible pressing plate through the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force.

[0069] Specifically, according to the formula: P 压 =P+(E×Δd / d1×S)*10 2 , determine the total pressing force of the final flexible pressing plate, where P is the basic pressure of the flexible pressing plate, E is the compression modulus of the flexible material, Δd is the compression amount of the flexible material, d1 is the original thickness of the flexible material, and S is the pressing area of ​​the flexible pressing plate.

[0070] In one embodiment, the number of pressure sources is determined according to the total pressing force of the flexible pressing plate.

[0071] For easy understanding, an example is given. The number of pressure sources is designed according to the total pressing force of the pressing plate. The total force of the pressure source is required to be Ptotal ≥ 110% Ppressure. The pressure provided by a single pressure source is p, so the number of pressure sources must be greater than or equal to Ptotal / p. Taking the hood outer panel of a certain vehicle as an example, the pressure source of the pressing plate is provided by a nitrogen cylinder. After calculation, the required total pressure Ppressure = 34t, then Ptotal ≥ 110% * 34t = 37.4t. According to the mold structure design, the single nitrogen cylinder is selected as 1.5t, then the total number of pressure sources required is 37.4 / 1.5 = 24.9, which is an integer of 25.

[0072] It can be understood that P total is calculated. At the same time, the number of pressure sources is obtained according to P total to guide mold design and manufacturing, that is, the value of P total is obtained to guide mold design and manufacturing, making the design more reasonable and avoiding the unreasonable mold design of conventional solutions, which requires repeated changes.

[0073] In one embodiment, the pressure sources need to be arranged close to the molding parting line and evenly distributed.

[0074] It can be understood that the present application performs sampling tests on the flexible material in the flexible blanking plate to obtain the compression modulus of the flexible material; calculates the compression amount of the flexible material, the blanking area of ​​the blanking plate and the basic blanking force; and obtains the total blanking force of the final flexible blanking plate through the compression amount of the flexible material, the blanking area of ​​the blanking plate and the basic blanking force. The blanking force can be accurately calculated in the blanking plate design stage, and the mold development cycle is greatly shortened, saving mold development costs.

[0075] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a flexible pressing plate pressing force calculation device provided by the present invention. Figure 2 As shown, the device comprises:

[0076] The acquisition module 201 is used to perform sampling test on the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material.

[0077] The calculation module 202 is used to calculate the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force.

[0078] The determination module 203 is used to obtain the total pressing force of the final flexible blank holder according to the compression amount of the flexible material, the pressing area of ​​the blank holder and the basic pressing force.

[0079] Furthermore, in a possible implementation manner, the acquisition module is further used to sample the flexible material in the flexible pressing plate, and perform a compression test on the sampled flexible material to obtain a stress-strain curve of the flexible material;

[0080] According to the stress-strain curve of the flexible material, the compression modulus of the flexible material is obtained, wherein the compression modulus is the degree of deformation of the flexible material under the action of compressive stress.

[0081] Furthermore, in a possible implementation manner, the calculation module is further used to determine the original thickness of the flexible material and the pressure value to be applied;

[0082] Applying the pressure value to the original thickness of the flexible material to obtain the thickness of the flexible material after compression;

[0083] The compression amount of the flexible material is calculated according to the difference between the original thickness and the thickness after compression.

[0084] Furthermore, in a possible implementation manner, the determination module is further configured to determine a pressing area of ​​the flexible pressing plate according to design requirements of the flexible pressing plate.

[0085] Furthermore, in a possible implementation manner, the calculation module is further configured to calculate the following according to the formula:压 =P+(E×Δd / d1×S)*10 2 , determine the total pressing force of the final flexible pressing plate, where P is the basic pressure of the flexible pressing plate, E is the compression modulus of the flexible material, Δd is the compression amount of the flexible material, d1 is the original thickness of the flexible material, and S is the pressing area of ​​the flexible pressing plate.

[0086] Furthermore, in a possible implementation manner, the calculation module is further used to determine whether the flexible material needs trimming or punching and / or flanging or shaping;

[0087] When it is determined that trimming or punching is required, according to the formula: Calculate the basic pressure of the flexible material, where t is the thickness of the sheet; τ is the shear strength of the sheet; L1 is the total molding line length of trimming or punching;

[0088] When it is determined that flanging or shaping is required, according to the formula: Calculate the basic pressure of the flexible pressing plate, where α is the pressing force per unit flanging or shaping length; σ is the tensile strength of the material; L2 is the total forming line length of the flanging or shaping;

[0089] When it is determined that trimming or punching and flanging or shaping are required, the basic pressure of the flexible pressing plate is calculated according to the formula: P=P1+P2.

[0090] Furthermore, in a possible implementation manner, the determination module is further configured to determine the number of pressure sources according to the total pressing force of the flexible pressing plate.

[0091] Reference Figure 3 , Figure 3 FIG. 1 is a schematic diagram of a flexible pressing plate provided by the present invention, Figure 3 As shown:

[0092] 1 is a pressure source, 2 is a pressing plate body, and 3 is a flexible material, wherein the flexible material can be a polyurea resin material.

[0093] Pressure source, that is, the number of pressure sources designed according to the total pressing force of the pressing plate. The total force of the pressure source is required to be Ptotal ≥ 110% Ppressure. The pressure provided by a single pressure source is p, then the number of pressure sources must be greater than or equal to Ptotal / p. Taking the outer panel of the hood of a certain vehicle as an example, the pressure source of the pressing plate is provided by a nitrogen cylinder. After calculation, the required total pressure Ppressure = 34t, then Ptotal ≥ 110% * 34t = 37.4t. According to the mold structure design, the single nitrogen cylinder is selected as 1.5t, then the total number of pressure sources required is 37.4 / 1.5 = 24.9, which is an integer of 25. The pressure source can be understood as a guide for the design and manufacture of the mold. It should be noted that the pressing plate refers to the whole of rigid parts + flexible materials.

[0094] Refer to the following Figure 4 An electronic device 400 according to this embodiment of the present invention will be described. Figure 4 The electronic device 400 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0095] like Figure 4 As shown, the electronic device 400 is in the form of a general computing device. The components of the electronic device 400 may include but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including the storage unit 420 and the processing unit 410).

[0096] The storage unit stores program codes, which can be executed by the processing unit 410, so that the processing unit 410 executes the steps according to various exemplary embodiments of the present invention described in the above “Embodiment Method” section of this specification.

[0097] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 421 and / or a cache memory unit 422 , and may further include a read-only memory unit (ROM) 423 .

[0098] The storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0099] Bus 430 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0100] The electronic device 400 may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 400, and / or communicate with any device that enables the electronic device 400 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 450. Furthermore, the electronic device 400 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 460. As shown, the network adapter 460 communicates with other modules of the electronic device 400 via a bus 430. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0101] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0102] According to the solution of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.

[0103] refer to Figure 5 As shown, a program product 500 for implementing the above method according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0104] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0105] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0106] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0107] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0108] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0109] In summary, the present application provides a method, device, equipment and storage medium for calculating the pressing force of a flexible pressing plate, wherein the method comprises the steps of: sampling and testing the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material; calculating the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force; and obtaining the total pressing force of the final flexible pressing plate through the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force. The present application can accurately calculate the pressing force during the design stage of the pressing plate, and greatly shortens the mold development cycle, saving mold development costs.

[0110] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0111] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A method for calculating the pressing force of a flexible pressing plate, characterized in that: include: Sampling and testing the flexible material in the flexible press plate to obtain the compression modulus of the flexible material; Calculating the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force; Obtaining the total pressing force of the final flexible pressing plate through the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force; According to the formula: P 压 =P+(E×Δd / d1×S)*10 2 , determine the total pressing force of the final flexible pressing plate, where P is the basic pressure of the flexible pressing plate, E is the compression modulus of the flexible material, Δd is the compression amount of the flexible material, d1 is the original thickness of the flexible material, and S is the pressing area of ​​the flexible pressing plate.

2. The method according to claim 1, characterized in that The method of sampling and testing the flexible material in the flexible press plate to obtain the compression modulus of the flexible material includes: Sampling the flexible material in the flexible pressing plate, and performing a compression test on the sampled flexible material to obtain a stress-strain curve of the flexible material; According to the stress-strain curve of the flexible material, the compression modulus of the flexible material is obtained, wherein the compression modulus is the degree of deformation of the flexible material under the action of compressive stress.

3. The method according to claim 1, characterized in that include: Determining the original thickness of the flexible material and the pressure value to be applied; Applying the pressure value to the original thickness of the flexible material to obtain the thickness of the flexible material after compression; The compression amount of the flexible material is calculated according to the difference between the original thickness and the thickness after compression.

4. The method according to claim 1, characterized in that include: The pressing area of ​​the flexible pressing plate is determined according to the design requirements of the flexible pressing plate.

5. The method according to claim 1, characterized in that include: Determining whether the flexible material needs trimming or punching and / or flanging or shaping; When it is determined that trimming or punching is required, according to the formula: Calculate the basic pressure of the flexible material, where t is the thickness of the sheet; τ is the shear strength of the sheet; L1 is the total molding line length of trimming or punching; When it is determined that flanging or shaping is required, according to the formula: Calculate the basic pressure of the flexible pressing plate, where α is the pressing force per unit flanging or shaping length; σ is the tensile strength of the material; L2 is the total forming line length of the flanging or shaping; When it is determined that trimming or punching and flanging or shaping are required, the basic pressure of the flexible pressing plate is calculated according to the formula: P=P1+P2.

6. The method according to claim 1, characterized in that Also includes: The number of pressure sources is determined according to the total pressing force of the flexible pressing plate.

7. A flexible pressing plate pressing force calculation device, characterized in that: include: An acquisition module, which is used to perform sampling test on the flexible material in the flexible pressing plate to obtain the compression modulus of the flexible material; A calculation module, which is used to calculate the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force; A determination module, which is used to obtain a total pressing force of a final flexible pressing plate according to the compression amount of the flexible material, the pressing area of ​​the pressing plate and the basic pressing force; The calculation module is also used according to the formula: P 压 =P+(E×Δd / d1×S)*10 2 , determine the total pressing force of the final flexible pressing plate, where P is the basic pressure of the flexible pressing plate, E is the compression modulus of the flexible material, Δd is the compression amount of the flexible material, d1 is the original thickness of the flexible material, and S is the pressing area of ​​the flexible pressing plate.

8. An electronic device, characterized in that: The electronic device comprises: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that: The computer program instructions are stored therein, and when the computer program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 6.

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