Injection molded part weld line elimination method, injection molded part, electronic equipment and storage medium

Abstract

The invention belongs to the technical field of injection molding, and provides an injection molding part weld line eliminating method, electronic equipment and a storage medium, and the method comprises the steps that an injection mold simulation model of an injection molding part is constructed, and the injection mold simulation model is provided with a simulation air channel; modifying the airway data of the simulation airway to obtain a modified simulation model; performing injection molding based on the modified simulation model to obtain an injection molding part simulation result; modifying the air channel data of the injection mold based on the simulation result of the injection molding part to obtain a modified injection molding simulation mold; and based on the corrected injection molding simulation mold, obtaining an injection molding part without weld lines. According to the method, the updated simulation model can be obtained by modifying the airway data of the simulation airway of the simulation model, and the airway data of the injection mold is further modified according to the simulation result of the injection molding part, so that the generation of weld lines can be reduced or eliminated, errors and low efficiency caused by artificial experience data are reduced, the efficiency is improved, and the cost is reduced. And the product quality of the injection molded part is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and in particular relates to a method for eliminating weld lines of injection molded parts, injection molded parts, electronic equipment and storage media. Background Art

[0002] Injection molds are various molds and tools used in industrial production to obtain the desired products by injection molding. The difference between the airway wall thickness of gas-assisted products and the main wall thickness of the product is at least 5 times, which is determined by the characteristics of the gas-assisted process. The difference in wall thickness forms a runway effect, thereby forming a weld line, which affects the product quality.

[0003] In the related art, technicians in injection molding factories usually design molds or debug the injection molding process based on their experience so that the weld lines on the products obtained by injection molding meet the requirements of appearance and mechanical properties, but they have not formed a systematic and effective method to eliminate weld lines to improve product quality. Summary of the invention

[0004] In view of this, the present invention provides a method for eliminating weld lines of injection molded parts to solve the problem in the prior art that the weld lines are eliminated by debugging based on the experience of technicians, resulting in low efficiency and unstable quality.

[0005] In a first aspect, the present invention provides a method for eliminating weld lines of injection molded parts, comprising: constructing an injection mold simulation model of the injection molded part, the injection mold simulation model having a simulated airway; based on the injection mold simulation model, modifying the airway data of the simulated airway to obtain a modified simulation model; performing injection molding based on the modified simulation model to obtain an injection molded part simulation result; modifying the injection mold airway data based on the injection molded part simulation result to obtain a modified injection molding simulation mold; based on the modified injection molding simulation mold, obtaining an injection molded part with weld lines eliminated.

[0006] In some optional embodiments, the injection mold airway data is modified based on the injection molded part simulation result to obtain a corrected injection simulation mold, specifically including: determining an optimization direction based on the simulation result; and modifying the injection mold airway data based on the optimization direction to obtain the corrected injection simulation mold.

[0007] In some optional embodiments, the airway data includes shape data.

[0008] In some optional embodiments, the modeling data includes airway slope data, airway length data and air port height data.

[0009] In some optional implementations, the modeling data further includes an airway end face shape, and the airway end face shape is modified into a right-angled face.

[0010] In some optional embodiments, constructing an injection mold simulation model of an injection molded part specifically includes: formulating a mold flow gate scheme and a filling scheme; performing mold flow analysis based on the mold flow gate scheme and the filling scheme to obtain an injection mold simulation model.

[0011] In a second aspect, the present invention further provides an injection molded part, which is prepared by using any one of the methods for eliminating weld lines of injection molded parts, and the injection molded part eliminates the weld line.

[0012] In a third aspect, the present invention also provides an electronic device, comprising: at least one processor; a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can: construct an injection mold simulation model of an injection molded part, the injection mold simulation model having a simulated airway; modify the airway data of the simulated airway to obtain a modified simulation model; perform injection molding based on the modified simulation model to obtain an injection molded part simulation result; modify the injection mold airway data based on the injection molded part simulation result to obtain a corrected injection molding simulation mold.

[0013] In a third aspect, the present invention provides a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements any one of the methods for eliminating weld lines of injection molded parts.

[0014] The beneficial effects of the present invention are:

[0015] The present invention can obtain an updated simulation model by modifying the airway data of the simulated airway of the simulation model, and further modify the airway data of the injection mold according to the simulation result of the injection molded part to obtain a corrected injection simulation mold, which can reduce or eliminate the generation of weld lines, reduce the errors and inefficiency caused by artificial experience data, improve efficiency, and ensure the product quality of the injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for use in the specific implementation or the prior art description. Obviously, the drawings described below are some implementations of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a flow chart of a method for eliminating weld lines of injection molded parts according to one embodiment of the present invention;

[0018] Figure 2 The figure is a block diagram of an electronic device according to an embodiment of the present invention.

[0019] Description of reference numerals:

[0020] 110. Processor; 120. Memory. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Combine the following Figure 1 and Figure 2 , describing an embodiment of the present invention.

[0026] like Figure 1 As shown, according to an embodiment of the invention, a method for eliminating weld lines of injection molded parts is provided, comprising the following steps:

[0027] Step S101: constructing an injection mold simulation model of an injection molded part, wherein the injection mold simulation model has a simulated airway.

[0028] Step S103: based on the injection mold simulation model, modify the airway data of the simulated airway to obtain a modified simulation model.

[0029] Step S105: performing injection molding based on the modified simulation model to obtain a simulation result of the injection molded part.

[0030] Step S107: modifying the injection mold airway data based on the injection molded part simulation result to obtain a modified injection simulation mold.

[0031] Step S109: Based on the corrected injection simulation mold, an injection molded part with weld lines eliminated is obtained.

[0032] In the process of solving the problem of weld lines of injection molded parts, we have proposed an effective elimination method, which includes the following detailed steps:

[0033] In this embodiment, it is necessary to construct an injection mold simulation model of an injection molded part and modify the airway data of the simulated airway. By adjusting the airway data, an updated simulation model can be obtained, which will be closer to the actual injection molding process.

[0034] The injection molding simulation will be performed based on this modified simulation model. Through this simulation process, a simulation result of an injection molded part can be obtained, which will provide an understanding of the possible weld line situation under the current mold design.

[0035] Then, the airway data of the injection mold will be further modified according to the simulation results of the injection molded part. Through this series of adjustments, a revised injection simulation mold can be obtained, which has been optimized in design to reduce or eliminate the generation of weld lines.

[0036] Finally, the corrected injection molding simulation mold will be used to perform actual injection molding operations, and ultimately an injection molded part with weld lines eliminated can be obtained, thereby ensuring the quality of the product and maintaining the appearance of the injection molded part to meet the expected standards.

[0037] Further, step S107, based on the injection mold simulation result, the injection mold airway data is modified to obtain a modified injection simulation mold, which specifically includes the following steps:

[0038] Step S1071: determining an optimization direction based on simulation results;

[0039] Step S1073: modifying the injection mold airway data based on the optimization direction to obtain a corrected injection simulation mold.

[0040] In the process of manufacturing injection molded parts, in order to improve product quality and production efficiency, injection molding simulation technology is used to predict and optimize the injection molding process. By analyzing the simulation results of injection molded parts, the airway data of the injection mold can be adjusted and modified accordingly to obtain a more accurate and efficient injection molding simulation mold. Among them, it is necessary to analyze the simulation results of injection molded parts to determine the direction that needs to be optimized. This step is crucial because it will directly affect the accuracy and effectiveness of subsequent modifications. During the analysis process, key factors such as the filling condition of the injection molded parts, cooling efficiency, stress distribution, and possible defects can be focused on.

[0041] After determining the optimization direction, the next step is to modify the airway data of the injection mold according to the optimization direction. The modifications involved may include adjusting the size, shape, position and other parameters of the airway to ensure smooth and uniform gas flow during the injection molding process. Through these adjustments, a corrected injection molding simulation mold can be obtained, which will help improve the quality of injection molded parts, reduce weld line defects in production, and improve production efficiency and product quality of injection molded parts.

[0042] In the process of determining the optimization direction, considering the gas-assisted product from the perspective of filling, the design of the airway size is usually more than 5 times the main wall thickness. In the process of plastic filling, the runway effect will inevitably occur, that is, the plastic flows faster in the thick-walled area and flows slowly in the thin-walled area, resulting in the generation of weld lines and retention marks, which in turn cause color difference problems and weld line problems. In view of the differences in the shape and airway structure of each product, it is necessary to conduct a preliminary analysis to determine the difference between the airway runner speed and the main wall thickness runner speed. First, it is crucial to optimize the gate scheme. It is necessary to avoid designing the gate in the thick-walled area of ​​the airway, because the injection of the thick-walled area will cause material flipping marks, resulting in unsolvable surface appearance defects. It is preferred to design the first filling gate in the thin-walled area near the airway, which is the first principle of optimization using the shape and wall thickness differences. Secondly, according to the shape and size of the airway, the second step of flow simulation is carried out, and the optimization direction is confirmed by the simulated flow convergence angle. Third, the shape and size of the airway are modified, and the mold flow software is used for analysis and iterative optimization to obtain the best flow convergence angle. At the same time, the product shape features, such as the inner corners and the areas where light is diffusely reflected on the shape, are used to adjust the weld line position based on the favorable factors of the product's secondary appearance area to reduce the visibility of the weld line. This step is the key to optimizing the weld line.

[0043] Furthermore, the airway data includes modeling data, which covers various modeling data information related to the airway, including the geometric shape and size of the airway.

[0044] Furthermore, the modeling data includes airway slope data, airway length data and air port height data.

[0045] Modeling data refers to a series of numerical information used to define the appearance and structural characteristics of a product during the design and manufacturing process. These data usually include multiple key measurement parameters, such as airway slope data, airway length data, and air port height data.

[0046] The airway slope data refers to the inclination angle and direction of the airway surface, which is crucial to ensure smooth airflow and reduce resistance. The airway length data involves the straight-line distance of the airway, which affects the path length and speed of the airflow. The air port height data refers to the vertical size of the air port, which has a direct impact on controlling the amount and distribution of airflow.

[0047] The modeling data also includes the shape of the airway end face, and the shape of the airway end face is modified into a right-angled face.

[0048] Changing the shape of the airway end face from the original arc surface to a right-angle surface is conducive to eliminating the weld line.

[0049] Based on step S101, a simulation model of an injection mold for an injection molded part is constructed, specifically comprising the following steps:

[0050] Step S1011: Formulate a mold gate plan and a filling plan;

[0051] Step S1013: Perform mold flow analysis based on the mold flow gate solution and the filling solution to obtain an injection mold simulation model.

[0052] Regarding this embodiment, in step S1011, a detailed mold flow gate scheme and a corresponding filling scheme need to be formulated. In step S1013, an in-depth mold flow analysis will be performed based on the mold flow gate scheme and filling scheme previously formulated. Through this analysis, the material flow during the injection molding process can be simulated to obtain an accurate injection mold simulation model. This model can not only predict possible problems, but also guide necessary adjustments in actual production to ensure the quality and efficiency of injection molded parts.

[0053] Eliminating the weld line can significantly reduce the appearance defects and avoid adding spraying process in the later stage of production. Among them, the mold flow analysis technology is used to solve the defects at a low cost through simulation in the early stage.

[0054] The present invention also provides an injection molded part, which is prepared by using any one of the methods for eliminating weld lines of injection molded parts, and the weld lines of the injection molded part are eliminated.

[0055] The injection molded part is prepared by implementing any of the above-mentioned methods for eliminating weld lines of injection molded parts. Through the use of this method, the weld lines of the injection molded part finally obtained are successfully eliminated, thereby improving the overall quality and appearance of the product.

[0056] like Figure 2 As shown, the present invention also provides an electronic device, comprising: at least one processor 110; a memory 120 connected to the at least one processor 110 in communication; wherein the memory 120 stores instructions executable by the at least one processor 110, and the instructions are executed by the at least one processor 110, so that the at least one processor 110 can perform the following steps:

[0057] Step S101: constructing an injection mold simulation model of an injection molded part, wherein the injection mold simulation model has a simulated airway;

[0058] Step S103: modifying the airway data of the simulated airway to obtain a modified simulation model;

[0059] Step S105: performing injection molding based on the modified simulation model to obtain a simulation result of the injection molded part;

[0060] Step S107: modifying the injection mold airway data based on the injection molded part simulation result to obtain a modified injection simulation mold.

[0061] The present invention also provides a computer storage medium storing a computer program, which implements any one of the methods for eliminating weld lines of injection molded parts when executed by a processor.

[0062] Electronic device is intended to refer to various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers.

[0063] Electronic devices may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the invention described and / or claimed herein.

[0064] The present invention also provides a storage medium storing a computer program. When the computer program is executed by a processor, the steps of implementing any one of the methods for eliminating weld lines of injection molded parts are as follows:

[0065] Step S101: constructing an injection mold simulation model of an injection molded part, wherein the injection mold simulation model has a simulated airway;

[0066] Step S103: modifying the airway data of the simulated airway to obtain a modified simulation model;

[0067] Step S105: performing injection molding based on the modified simulation model to obtain a simulation result of the injection molded part;

[0068] Step S107: modifying the injection mold airway data based on the injection molded part simulation result to obtain a modified injection simulation mold.

[0069] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0070] In the context of the present invention, a computer readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or apparatus. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing.

[0071] Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of machine readable storage media may include electrical connections based on one or more wires, a portable computer 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.

[0072] Obviously, the above embodiments are merely examples for clear description and are not limitations of the implementation methods.

[0073] For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived from this are still within the protection scope of the invention.

Claims

1. A method for eliminating weld lines of injection molded parts, characterized in that: include: Constructing an injection mold simulation model of an injection molded part, wherein the injection mold simulation model has a simulated airway; Based on the injection mold simulation model, modify the airway data of the simulated airway to obtain a modified simulation model; Perform injection molding based on the modified simulation model to obtain a simulation result of the injection molded part; Modify the injection mold airway data based on the injection molded part simulation result to obtain a modified injection simulation mold; Based on the modified injection simulation mold, an injection molded part with weld lines eliminated is obtained.

2. The method for eliminating weld lines of injection molded parts according to claim 1, characterized in that: Modifying the injection mold airway data based on the injection molded part simulation result to obtain a modified injection simulation mold specifically includes: Determining an optimization direction based on the simulation results; The injection mold airway data is modified based on the optimization direction to obtain the modified injection simulation mold.

3. The method for eliminating weld lines of injection molded parts according to claim 1, characterized in that: The airway data includes shape data.

4. The method for eliminating weld lines of injection molded parts according to claim 3, characterized in that: The modeling data includes airway slope data, airway length data and air port height data.

5. The method for eliminating weld lines of injection molded parts according to claim 3, characterized in that: The modeling data also includes an airway end surface shape, and the airway end surface shape is modified into a right-angle surface.

6. The method for eliminating weld lines of injection molded parts according to any one of claims 1 to 5, characterized in that: Build an injection mold simulation model for injection molded parts, including: Develop mold flow gate plan and filling plan; Mold flow analysis is performed based on the mold flow gate scheme and the filling scheme to obtain an injection mold simulation model.

7. An injection molded part, characterized in that: The injection molded part is prepared by the method for eliminating weld lines of an injection molded part according to any one of claims 1 to 6, wherein the weld lines of the injection molded part are eliminated.

8. An electronic device, characterized in that: include: at least one processor (110); a memory (120) communicatively coupled to the at least one processor (110); The memory (120) stores instructions executable by the at least one processor (110), and the instructions are executed by the at least one processor (110) to enable the at least one processor (110) to: Constructing an injection mold simulation model of an injection molded part, wherein the injection mold simulation model has a simulated airway; Modifying the airway data of the simulated airway to obtain a modified simulation model; Perform injection molding based on the modified simulation model to obtain a simulation result of the injection molded part; The injection mold airway data is modified based on the injection molded part simulation result to obtain a modified injection simulation mold.

9. A computer storage medium, characterized in that: A computer program is stored, and when the computer program is executed by a processor, the method for eliminating weld lines of injection molded parts according to any one of claims 1 to 8 is implemented.

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