Modular mold for product variants and design method

Abstract

The application provides a modular mold and design method for product variants, comprising a mold body model, the forming surface of the mold body model has at least one movable block embedding slot; a movable block, the movable block has at least one movable block, the movable block is detachably connected with the mold body model through a fastening assembly, so that the movable block has an assembly position matched with the mold body model, and the movable block has a separation position from the mold body model, the movable block is used to constitute a variant structure mold of a target product when being located at the assembly position, the movable block is arranged in the movable block embedding slot, and the mold body model is used to constitute a basic type structure mold of the target product when the movable block is located at the separation position. The application at least solves the technical problem that the mold design corresponding to multiple variant products in the prior art has poor universality.

Description

Technical Field

[0001] This invention relates to the field of mold design technology, and more specifically, to a modular mold and design method for product modification. Background Technology

[0002] In the manufacturing of automobiles, mechanical parts, and other products, traditional mold design typically involves developing a complete set of molds for each type of product when dealing with multiple variations derived from the same basic model. This approach not only requires a significant investment in mold materials, processing time, and R&D costs, but also occupies substantial space resources due to the production and storage of multiple sets of molds. Furthermore, when product variation requirements are adjusted, modifying the entire set of molds is difficult and time-consuming, making it difficult to quickly respond to the market's iterative demands for product diversification and customization, and unable to adapt to flexible production models with small batches and multiple varieties.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] The main objective of this invention is to provide a modular mold and design method for product variations, in order to solve the technical problem of poor versatility in mold design for multi-variant products in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a modular mold for product modification is provided, comprising: a mold body model having at least one movable block insert groove on its molding surface; a movable block having at least one movable block, the movable block being detachably connected to the mold body model via a fastening assembly to provide an assembly position that engages with the mold body model, and a disengaged position that separates the movable block from the mold body model. The movable block is positioned in the assembly position to form a modified structural mold for the target product, the movable block being disposed within the movable block insert groove, and the mold body model being positioned in the disengaged position to form a basic structural mold for the target product.

[0006] Furthermore, the outline of the movable piece inlay slot is constructed as a rounded rectangle.

[0007] Furthermore, a draft angle of α is provided between the side and bottom surfaces of the movable block insert groove, wherein 0.5°≤α≤3°.

[0008] Furthermore, the side of the movable block inlay groove and the mounting surface of the corresponding movable block are in clearance fit, with a single-sided clearance of δ, where 0.02mm≤δ≤0.1mm.

[0009] Furthermore, the operating part of the fastening component is located on the side of the mold body model away from the forming surface.

[0010] The further fastening components include: multiple threaded fastening components; multiple through holes are provided on the main mold model; the multiple through holes are corresponding one-to-one with the multiple threaded fastening components; the multiple through holes are connected to the movable block insert groove; the movable block is provided with multiple threaded blind holes; the multiple threaded blind holes are corresponding one-to-one with the multiple through holes; the operating part of any one of the multiple threaded fastening components is controlled so that the threaded fastening component passes through the corresponding through hole and connects with the corresponding threaded blind hole, thereby connecting the movable block to the main mold model.

[0011] Furthermore, the fastening assembly also includes: multiple ejector screws, and ejector screw holes are provided at the bottom of the movable block insert groove. The multiple ejector screw holes are spaced apart along the bottom of the movable block insert groove. The multiple ejector screw holes are provided in a one-to-one correspondence with multiple ejector screws, and the multiple ejector screws are controlled to engage with the corresponding ejector screw holes so that the ends of the multiple ejector screws eject the movable block assembled in the movable block insert groove.

[0012] Furthermore, the movable block is provided with limiting protrusions, including multiple limiting protrusions, and each of the multiple limiting protrusions corresponds to a multiple ejector screw hole. When the movable block is in the assembly position, a portion of the limiting protrusion is provided in any one of the multiple ejector screw holes.

[0013] Furthermore, a first cooling channel is provided inside the main mold model, and a second cooling channel is provided for the movable block; when the movable block is located in the movable block insert slot, the first cooling channel and the second cooling channel are connected to form a cooling circulation loop.

[0014] According to another aspect of the present invention, a design method for a modular mold for product modification is provided, for designing the aforementioned modular mold for product modification, comprising: obtaining structural difference features between the basic structure of the target product and at least one modified structure; determining at least one corresponding movable block forming area of ​​the cavity portion of the mold body model based on the structural difference features and the dimensions of the target product; determining at least one movable block inserting groove on the cavity portion based on the movable block forming area; and determining at least one movable block corresponding to the structural difference features based on the movable block inserting groove, so that the movable block and the mold body model together constitute a complete mold cavity for molding the corresponding product.

[0015] By applying the technical solution of this invention, the main mold model can be flexibly assembled and disassembled with fastening components and movable blocks. When the movable block is embedded in the movable block inlay groove of the main mold model and is in the assembled position, it can form a modified structure mold of the target product. When the movable block is in the separated position, the main mold model can directly form a basic structure mold of the target product. There is no need to develop a complete set of molds for each modified product, which greatly reduces the input of mold materials and processing time, reduces R&D costs, saves production workshop and storage space resources, and eliminates the need for additional investment in moisture-proof and rust-proof maintenance facilities. At the same time, it can quickly respond to product iteration needs and adapt to the flexible production mode of small batches and multiple varieties, solving the technical problem of poor universality of mold design for multiple modified products in the prior art. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the first embodiment of the modular mold for product modification according to the present invention;

[0018] Figure 2 A partial structural schematic diagram of the second embodiment of the modular mold for product modification according to the present invention.

[0019] The above figures include the following reference numerals:

[0020] 10. Main model of the mold;

[0021] 101. Mosaic groove;

[0022] 102. Through hole;

[0023] 103. Eject the screw hole;

[0024] 20. Live block;

[0025] 30. Fastening components. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0030] In the manufacturing sectors of automobiles and mechanical parts, it is extremely common for multiple variant products to be derived from the same basic model. Although these variant products share the core design logic, they differ in size, local structure, or functional details. Traditional mold design always follows the principle of creating a complete mold set, from mold base and mold core to ejection system, for each variant product.

[0031] This model first and foremost brings enormous cost pressure. The development cost of a single precision mold for complex automotive parts can often reach hundreds of thousands of yuan, and in small-batch orders, the amortized cost of the mold can even exceed 30% of the cost of a single product. Besides the high cost of the mold materials themselves, the customized processing requires a significant amount of man-hours. From design modeling and process debugging to finished product acceptance, the entire R&D process remains costly. Furthermore, a large number of molds not only require dedicated storage space but also necessitate the use of cranes and other equipment for storage and retrieval, which not only occupies space resources but also increases the security risks and costs associated with storage management.

[0032] When market demands change and product variations require adjustment, the inherent defects of traditional molds become more pronounced. Mold structures are highly interconnected; modifications to local dimensions or functions often necessitate the redesign and reprocessing of the entire mold set. This not only presents significant modification challenges but also increases the risk of processing errors due to data gaps. Such modification cycles typically last weeks or even months, far from meeting the market's rapid iteration demands for product diversification and customization. Furthermore, with the current trend towards small-batch, multi-variety production, the inflexibility of traditional models becomes even more apparent. Frequent changes to dedicated molds consume substantial production time, and the pressure of mold cost amortization increases sharply as order volumes decrease. Ultimately, this makes it difficult for companies to adapt to the core requirements of flexible production, leaving them at a disadvantage in market competition.

[0033] This application provides a modular mold for product modification, such as... Figure 1 and Figure 2 As shown, the system includes: a mold body model 10, the molding surface of which has at least one movable block insert groove 101; and a movable block 20, which has at least one movable block 20. The movable block 20 is detachably connected to the mold body model 10 via a fastening assembly 30, so that the movable block has an assembly position that mates with the mold body model and a separation position that is separate from the mold body model. When the movable block 20 is in the assembly position, it is used to form a modified structure mold for the target product. The movable block 20 is disposed in the movable block insert groove 101. When the movable block 20 is in the separation position, the mold body model 10 is used to form a basic structure mold for the target product. In this embodiment, the basic structure mold does not have an active oil-gas separator, while the modified structure mold needs to have an active oil-gas separator. Accordingly, a breather connection flange needs to be added to the cylinder block.

[0034] The main mold model 10 can be flexibly assembled and disassembled with the fastening component 30 and the movable block 20. When the movable block 20 is embedded in the movable block inlay groove 101 of the main mold model 10 and is in the assembled position, it can form a modified structure mold of the target product. When the movable block 20 is in the separated position, the main mold model 10 can directly form a basic structure mold of the target product. There is no need to develop a complete set of molds for each modified product, which greatly reduces the input of mold materials and processing time, reduces R&D costs, saves production workshop and storage space resources, and eliminates the need for additional investment in moisture-proof and rust-proof maintenance facilities. At the same time, it can quickly respond to product iteration needs and adapt to the flexible production mode of small batch and multiple varieties, solving the technical problem of poor universality of mold design for multiple modified products in the existing technology.

[0035] Furthermore, the outline of the movable block insert groove 101 is a rounded rectangle. This avoids stress concentration in the main mold model 10 during the molding and disassembly of the movable block 20, reduces the risk of cracking of the main mold model 10, extends the overall service life of the mold, and at the same time reduces the assembly and disassembly resistance between the movable block 20 and the movable block insert groove 101, improves the replacement efficiency of the movable block 20, further accelerates the response speed of product deformation, and adapts to the flexible production needs of small batches and multiple varieties.

[0036] Specifically, a draft angle of α is provided between the side and bottom surfaces of the movable block insert groove 101, where 0.5°≤α≤3°. This reduces the frictional force between the movable block 20 and the movable block insert groove 101 during assembly and disassembly, reduces the difficulty of assembling and disassembling the movable block 20, improves the replacement efficiency of the movable block 20, shortens the mold adjustment time for product deformation, and avoids scratch damage between the movable block 20 and the movable block insert groove 101 during disassembly and assembly, reducing the frequency of mold maintenance, extending the service life of the mold body model 10 and the movable block 20, and further adapting to the flexible production needs of small batches and multiple varieties.

[0037] In this embodiment, the side of the movable block insert groove 101 and the mounting surface of the corresponding movable block are in clearance fit, with a single-sided clearance of δ, where 0.02mm≤δ≤0.1mm. This ensures the assembly accuracy of the movable block 20 within the movable block insert groove 101, avoiding difficulties in disassembling and assembling the movable block 20 due to excessive tightness, while also allowing for reasonable assembly allowance. This reduces the machining accuracy requirements of the movable block 20 and the movable block insert groove 101, thereby reducing mold processing costs and production cycle. Furthermore, it prevents the movable block 20 from jamming due to thermal expansion and contraction during use, improving the replacement efficiency of the movable block 20, ensuring the mold's rapid response to product deformation needs, and adapting to flexible production modes with small batches and multiple varieties.

[0038] In one exemplary embodiment, the operating part of the fastening component 30 is located on the side of the mold body model 10 away from the forming surface. If the operating part is directly arranged on the forming surface, the bolt head will be exposed on the cavity surface. During the casting process, a raised mark with the same shape as the bolt head will be formed on the surface of the casting, directly damaging the smoothness and aesthetics of the casting appearance.

[0039] Furthermore, the fastening assembly 30 includes: multiple threaded fastening assemblies; multiple through holes are provided on the mold body model 10; the multiple through holes are corresponding to the multiple threaded fastening assemblies; the multiple through holes are connected to the movable block insert groove 101; the movable block is provided with multiple threaded blind holes; the multiple threaded blind holes are corresponding to the multiple through holes 102; the operating part of any one of the multiple threaded fastening assemblies is controlled so that the threaded fastening assembly passes through the corresponding through hole 102 and connects with the corresponding threaded blind hole, thereby connecting the movable block 20 to the mold body model 10.

[0040] In this embodiment, the movable block 20 is connected to the main mold model 10. The advantage of this design is that the threaded connection provides a stable and reliable connection structure, ensuring the assembly accuracy of the movable block 20 on the main mold model 10 and preventing displacement of the movable block 20 during the molding process, which would affect product quality. At the same time, multiple threaded fastening components can be operated independently, making disassembly and assembly convenient and efficient. The movable block 20 can be replaced without special tools, shortening the mold adjustment cycle, improving the response speed to product deformation requirements, and adapting to the flexible production mode of small batches and multiple varieties.

[0041] Furthermore, the fastening assembly also includes: multiple ejector screws, and ejector screw holes 103 are provided at the bottom of the movable block insert groove 101. Multiple ejector screw holes 103 are provided at intervals along the bottom of the movable block insert groove 101. The multiple ejector screw holes 103 are provided in a one-to-one correspondence with multiple ejector screws, and the multiple ejector screws are controlled to cooperate with the corresponding ejector screw holes 103 respectively, so that the ends of the multiple ejector screws eject the movable block 20 assembled in the movable block insert groove 101.

[0042] By applying this embodiment, the movable block 20 stuck in the movable block insert slot 101 can be easily removed by means of the pushing force of the ejector screw, avoiding damage to the movable block 20 or the main mold model 10 caused by manual prying, reducing the maintenance cost of the mold. At the same time, the ejection operation is convenient and efficient, further shortening the replacement time of the movable block 20, improving the mold's response efficiency to product deformation requirements, and adapting to the flexible production mode of small batch and multiple varieties.

[0043] In this embodiment, the movable block 20 is provided with limiting protrusions, including multiple limiting protrusions. Each limiting protrusion corresponds one-to-one with a plurality of ejector screw holes 103. When the movable block 20 is in the assembly position, a portion of the limiting protrusion is provided within any one of the ejector screw holes 103. The cooperation between the limiting protrusions and the ejector screw holes 103 enables precise positioning of the movable block 20, preventing it from shifting or wobbling during mold forming, thus ensuring product forming accuracy. Simultaneously, the matching structure of the limiting protrusions and the ejector screw holes 103 provides positioning and guidance for the assembly position of the movable block 20, reducing assembly difficulty, improving replacement efficiency, and further accelerating the mold's response speed to product deformation requirements, thus adapting to flexible production modes of small batches and multiple varieties.

[0044] Furthermore, a first cooling channel is provided within the main mold model 10, and a second cooling channel is provided within the movable block 20. When the movable block 20 is located in the movable block insert slot 101, the first cooling channel and the second cooling channel are connected, thereby forming a cooling circulation loop. This enables uniform and efficient cooling of the mold forming area, shortening the product forming cycle, improving production efficiency, and avoiding defects such as product deformation and shrinkage caused by uneven cooling. It also ensures the consistency of forming quality for basic models and various modified products, further adapting to the flexible production needs of small-batch, multi-variety production.

[0045] According to another specific embodiment of this application, a design method for a modular mold for product modification is also provided, for designing the above-mentioned modular mold for product modification, including:

[0046] Step S1: Obtain the structural difference features between the basic structure and at least one variant structure of the target product;

[0047] In step S1, which forms the basis of the entire design methodology, the core is to accurately identify and extract the key differences between the target product's "basic structure" and "at least one variant structure." First, it is necessary to review the target product's design drawings, 3D model, and technical parameters to clarify the core molding outline, key dimensions, and functional structure of the basic product. This part serves as the core design basis for the subsequent mold body model, and its universality and stability must be ensured.

[0048] Subsequently, for each variant product, its structural differences from the basic product were compared one by one. The focus was on extracting independently separable features, such as changes in local dimensions, additions or subtractions of bosses / grooves, and differences in hole distribution. During the extraction process, the product molding process requirements were considered to exclude inseparable integrated structural differences, ensuring that the extracted features were feasible for independent molding and could be modified through replacement with movable blocks. Simultaneously, the specific dimensions, outline shape, and connection relationship of the features with the basic structure were recorded to provide accurate data support for the subsequent determination of the mold movable block area.

[0049] Step S2: Based on the structural difference characteristics and the target product size, determine at least one corresponding movable block forming area for the cavity part of the mold body model;

[0050] In step S2, after extracting the difference features, the movable forming area of ​​the cavity part of the main mold model is located based on the difference features and the overall dimensions of the target product. First, according to the mold forming principle, the basic structure of the product and the variation difference features are mapped to the corresponding forming positions of the mold cavity, thus clarifying the specific forming area of ​​the difference features in the cavity.

[0051] Subsequently, the boundary range of the forming area is determined based on the product dimensions. On the one hand, it is necessary to ensure that the forming area of ​​the movable block can completely cover the forming requirements of the different features, avoiding the inability to form the deformed structure due to the area being too small. On the other hand, the structural strength of the main mold model must be taken into account to ensure that the connection between the movable block forming area and the main mold body has sufficient support to prevent mold deformation due to uneven stress during the forming process. At the same time, if there are multiple different features, the layout of multiple movable block forming areas needs to be reasonably planned according to the distribution location and size of the different features to avoid interference between areas and ensure the smoothness of subsequent movable block assembly and replacement. The finally determined movable block forming area must accurately correspond to various different features, providing a clear position and size benchmark for the design of the subsequent movable block insert slot.

[0052] Step S3: Based on the movable block forming area, determine at least one movable block inlay groove on the cavity portion;

[0053] Step S3 is a crucial step in achieving modular mold disassembly. The core of this step is to transform the movable block forming area determined in step S2 into an inlay structure on the mold cavity that can accommodate movable blocks. First, based on the outline dimensions and shape of the movable block forming area, the basic outline of the movable block inlay groove is designed to ensure precise fit between the groove and subsequent movable blocks, while also considering the previously determined structural design requirements.

[0054] Optimize the detailed structure of the insert groove: Set the outline of the insert groove as a rounded rectangle to avoid stress concentration. Set a draft angle of 0.5°≤α≤3° between the side and bottom surfaces of the insert groove to reduce disassembly and assembly resistance. Reserve a single-sided fitting clearance of 0.02mm≤δ≤0.1mm to balance assembly accuracy and machining difficulty. Secondly, according to the design requirements of the fastening and ejection components, reserve assembly structures such as through holes 102 and ejection screw holes 103 at the corresponding positions of the insert groove to ensure that the insert groove can not only realize the positioning and assembly of the movable block, but also be compatible with subsequent fastening and ejection functions. If there are multiple movable block forming areas, multiple independent movable block insert grooves need to be designed accordingly. The size and structure of each insert groove must match its corresponding movable block forming requirements to ensure the universality of the mold body model, while providing a structural basis for flexible replacement of the movable block.

[0055] Step S4: Based on the live block inlay slot, determine at least one live block corresponding to the structural difference feature, so that the live block and the mold body model together constitute a complete mold cavity for molding the corresponding product.

[0056] In step S4, firstly, based on the dimensions and structure of the movable block insert groove determined in step S3, the outer contour of the movable block 20 is designed to ensure that the movable block can be smoothly embedded into the insert groove and achieve precise positioning. At the same time, limiting protrusions corresponding one-to-one with the screw holes 103 of the insert groove are set on the movable block to ensure the stability of the movable block after assembly and to prevent displacement during molding. Secondly, based on the product deformation difference characteristics extracted in step S1, the molding surface of the movable block is designed so that the molding surface of the movable block can accurately replicate the difference structure of the deformed product. When the movable block is embedded in the assembly position of the insert groove, the movable block and the cavity part of the mold body model 10 together constitute a complete mold cavity adapted to the deformed product. When the movable block is in the separated position, the cavity of the mold body model 10 can be directly used for molding the basic product.

[0057] Simultaneously, threaded blind holes corresponding to the through holes 102 in the mold body are provided on the movable block to accommodate the assembly requirements of the threaded fastening assembly 30. A second cooling channel also needs to be designed within the movable block to ensure its connectivity with the first cooling channel in the mold body, guaranteeing effective cooling during the molding process. Multiple sets of corresponding movable blocks can be designed to address different deformation characteristics. By replacing different movable blocks, different deformation products can be molded without redesigning the entire mold.

[0058] By applying the technical solution of this invention, step S1 obtains the structural difference features between the basic structure and at least one variant structure of the target product, which can accurately locate the core area of ​​the mold that needs to be changed, avoiding the waste of resources caused by indiscriminate design; step S2 determines at least one movable block forming area of ​​the cavity part of the mold body model based on the structural difference features and the size of the target product, which can ensure the universality of the mold body model and eliminate the need to develop a complete set of molds for each variant product; step S3 determines at least one movable block inlay slot of the cavity part based on the movable block forming area, and step S4 determines at least one movable block corresponding to the structural difference features based on the movable block inlay slot, which enables the movable block and the mold body model to be quickly combined to form a complete mold cavity for molding the corresponding product, greatly simplifying the mold design process, shortening the R&D cycle, reducing design costs, and flexibly adapting to the diverse variant requirements of products, thereby improving the mold design response efficiency in small-batch, multi-variety production modes.

[0059] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0060] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0061] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A modular mold for product modification, characterized in that, include: The mold body model (10) has at least one movable block inlay groove (101) on its molding surface. The movable block (20) has at least one movable block (20), the movable block (20) is detachably connected to the mold body model (10) by a fastening assembly (30) so that the movable block has an assembly position that mates with the mold body model, and the movable block has a separation position from the mold body model. The movable block (20) is located in the assembly position to form a modified structure mold of the target product. The movable block (20) is disposed in the movable block insert groove (101). When the movable block (20) is located in the separation position, the mold body model (10) is used to form a basic structure mold of the target product.

2. The modular mold for product modification according to claim 1, characterized in that, The outline of the movable block inlay groove (101) is a rounded rectangle.

3. The modular mold for product modification according to claim 1, characterized in that, A draft angle is provided between the side and bottom surfaces of the movable block inlay groove (101), wherein the draft angle is α, and 0.5°≤α≤3°.

4. The modular mold for product modification according to claim 1, characterized in that, The side of the movable block inlay groove (101) and the mounting surface of the corresponding movable block are in clearance fit, with a single-sided clearance of δ, wherein 0.02mm≤δ≤0.1mm.

5. The modular mold for product modification according to claim 1, characterized in that, The operating part of the fastening component (30) is located on the side of the mold body model (10) away from the forming surface.

6. The modular mold for product modification according to claim 5, characterized in that, The fastening assembly (30) includes: multiple threaded fastening assemblies; multiple through holes (102) are provided on the mold body model (10); the multiple through holes (102) are provided one-to-one with the multiple threaded fastening assemblies; the multiple through holes (102) are connected to the movable block insert groove (101); the movable block is provided with multiple threaded blind holes; the multiple threaded blind holes are provided one-to-one with the multiple through holes (102); the operating part of any one of the multiple threaded fastening assemblies is controlled so that the threaded fastening assembly passes through the corresponding through hole (102) and connects to the corresponding threaded blind hole, thereby connecting the movable block (20) to the mold body model (10).

7. The modular mold for product modification according to claim 5, characterized in that, The fastening assembly further includes: a plurality of ejector screws, and the bottom of the movable block insert groove (101) is provided with ejector screw holes (103). The ejector screw holes (103) include a plurality of holes, and the plurality of ejector screw holes (103) are spaced apart along the bottom of the movable block insert groove (101). The plurality of ejector screw holes (103) are provided in correspondence with the plurality of ejector screws, and the plurality of ejector screws are controlled to cooperate with the corresponding ejector screw holes (103) so that the ends of the plurality of ejector screws eject the movable block (20) assembled in the movable block insert groove (101).

8. The modular mold for product modification according to claim 7, characterized in that, The movable block (20) is provided with a limiting protrusion, and the limiting protrusion includes multiple protrusions. The multiple limiting protrusions are provided one-to-one with the multiple ejector screw holes (103). When the movable block (20) is in the assembly position, a portion of the limiting protrusion is provided in any one of the ejector screw holes (103).

9. The modular mold for product modification according to claim 1, characterized in that, The main body model (10) of the mold is provided with a first cooling channel, and the movable block (20) is provided with a second cooling channel. When the movable block (20) is located in the movable block inlay slot (101), the first cooling channel and the second cooling channel are connected to form a cooling circulation loop.

10. A design method for a modular mold for product modification, used to design the modular mold for product modification according to any one of claims 1-9, characterized in that, include: Obtain the structural difference characteristics between the basic structure and at least one variant structure of the target product; Based on the structural differences and the target product dimensions, at least one corresponding movable block forming area is determined for the cavity portion of the mold body model. Based on the movable block forming area, at least one movable block inlay groove is determined on the cavity portion; Based on the movable block inlay slot, at least one movable block corresponding to the structural difference feature is determined, so that the movable block and the mold body model together constitute a complete mold cavity for molding the corresponding product.

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