Card tray modular mold core structure, preparation method and card tray injection mold

Abstract

The invention discloses a card tray modular mold core structure, a preparation method and a card tray injection mold, and relates to the field of card tray injection molding.The mold core structure comprises a mold frame, the mold frame is provided with at least one mold core assembly, each mold core assembly comprises a mold core frame and at least one universal blank, and the universal blank is provided with a rubber area used for forming a card tray injection molding area; the rubber area does not limit the specific forming structure of the card support in an initial state, and can be correspondingly designed and processed according to the specifications and dimensions of different card supports to form a forming structure matched with the card support to be subjected to injection molding; the universality of the card tray injection mold is improved, repeated design and manufacturing of the whole set of mold are avoided, the mold development cost is reduced, the machining period is shortened, the number of mold core stock is reduced, material waste is reduced, the convenience of mold assembly and maintenance is improved, and the injection molding requirements of card trays of multiple specifications and multiple forms are met; and the application scene of multi-variety, small-batch and rapid switching production can be met.

Description

Technical Field

[0001] This invention relates to the field of cassette injection molding technology, and in particular to a cassette modular mold core structure, preparation method, and cassette injection mold. Background Technology

[0002] A card tray is a functional structural component used to carry, position, or limit electronic cards, and is widely used in mobile terminals, smart wearable devices, and other electronic products. During use, card trays typically require precise dimensional accuracy, stable structural strength, and good assembly reliability to ensure that cards do not loosen, fall off, or become damaged during insertion, removal, carrying, and long-term use.

[0003] In existing technologies, card holders are typically manufactured using injection molding. This is primarily because card holders often contain intricate structures such as locking mechanisms, limiting ribs, snap-fit ​​mechanisms, and positioning steps. These structures are small, densely distributed, and require high positional accuracy and consistency. Injection molding can mold these complex structures in a single step, ensuring product precision and consistency. Furthermore, card holders require repeated insertion and removal during use and are subjected to certain external forces. Injection molding materials (such as engineering plastics) can provide necessary elasticity and fatigue resistance while ensuring strength. Therefore, under current technological conditions, injection molding has become the mainstream manufacturing process for card holders.

[0004] During injection molding, not the entire mold structure of the card tray participates in product molding; only a portion of the mold is used to actually support and mold the molten plastic. This portion is the injection molding area of ​​the card tray. This molding area corresponds to the solid structure of the card tray product after molding, including the main outline of the card tray, the locking structure, the limiting structure, the snap-fit ​​structure, and the molding parts that assemble and cooperate with other components. The area used to actually mold the card tray product is usually referred to by industry technicians as the "glue area." The structure and size of the glue area directly determine the specifications, dimensions, and assembly performance of the card tray product, making it the most core and targeted design part of the card tray mold.

[0005] In the prior art, due to the significant differences in size, shape, and positioning structure of the card holders used in different products, the common approach is to design and configure a complete set of injection molds for each specification or model of card holder, including a front mold, rear mold, mold core, and sliding structure. For example, patent application number CN201910688756.2 discloses a card holder injection mold, which includes an upper mold and a lower mold. The upper mold includes an upper mold base, a panel, a moving mold plate, and a front mold core. The lower mold includes a lower mold base, an ejector plate, a support member, a fixed mold plate, and a rear mold core. The rear mold core has a mold groove and a material strip. The material strip has a card holder receiving member. The card holder receiving member has a through hole and a limiting spring. The card holder receiving member has a first card cap groove and a second card cap groove. The first card cap groove is used to insert one end of an external card cap, and the second card cap groove is used to insert the other end of an external card cap. The limiting spring is used to abut against the external card cap. The mold core structure in this design is for a single card tray specification. When the card tray specification changes, the entire mold core must be replaced or a new mold must be created. Different card tray specifications correspond to different molds, and the mold core and components are not interchangeable, resulting in significant material waste, long mold development cycles, high costs, and poor mold versatility. Therefore, this invention discloses a modular mold core structure for card trays, a preparation method, and a card tray injection mold to solve the above problems. Summary of the Invention

[0006] Based on this, it is necessary to address the aforementioned technical problems by providing a modular mold core structure, preparation method, and injection mold for card trays. By reserving a glue area on a universal blank of the mold core assembly, without specifying a particular molding structure, and then designing and processing it specifically after determining the card tray specifications, the same basic mold structure can adapt to various card trays of different specifications and shapes, thus improving the versatility of the card tray injection mold. By concentrating the molding differences of the card tray in the glue area structure, when changing card tray specifications, only the corresponding mold core glue area and related components need to be replaced or processed, avoiding the redesign and manufacture of the entire mold, thereby reducing mold development costs and processing cycles. Furthermore, through the standardized design of the universal blank, the mold core can be stored as a unified reserve material, processed only after determining specific product requirements, which helps reduce the quantity of mold core inventory, reduce material waste, facilitate the modularization and standardization of the card tray mold structure, improve the convenience of mold assembly and maintenance, and is suitable for injection molding needs of card trays of multiple specifications and shapes. It can meet the application scenarios of multi-variety, small-batch, and rapid changeover production, and has good engineering practicality and promotional value.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A modular mold core structure for a card tray includes a mold frame on which at least one set of mold core components are disposed. The mold core components include a mold core frame and at least one general-purpose blank. The general-purpose blank has a glue area for forming the injection molding area of ​​the card tray. The glue area does not limit the specific molding structure of the card tray in the initial state, and can be designed and processed according to the specifications and dimensions of different card trays to form a molding structure that matches the card tray to be injection molded.

[0008] As a preferred embodiment of the modular die core structure provided by the present invention, the universal blank adopts a standardized structural design.

[0009] As a preferred embodiment of the modular mold core structure of the card holder provided by the present invention, the mold core assembly includes a front mold insert and a rear mold insert. Both the front mold insert and the rear mold insert include a mold core frame and at least one universal blank. After the front mold insert and the rear mold insert are molded together, a card holder molding structure is formed.

[0010] As a preferred embodiment of the modular mold core structure of the card tray provided by the present invention, the card tray molding structure formed by the glue area includes a card cap structure and a sliding structure, wherein the sliding structure includes at least one of the following: card tray body contour, card position structure, limiting structure and snap-on structure.

[0011] In a preferred embodiment of the modular mold core structure provided by the present invention, the general blanks for forming the cap structure and each row structure are set independently.

[0012] In a preferred embodiment of the modular die core structure provided by the present invention, the general blank forming the die cap structure is detachably connected to the die core frame.

[0013] As a preferred embodiment of the modular mold core structure provided by the present invention, the mold frame is provided with at least one mounting slot, and the mold core frame is arranged side by side along the mounting slot.

[0014] In a preferred embodiment of the modular mold core structure provided by the present invention, the glue area is a regular or irregular reserved molding area.

[0015] A method for preparing a modular core structure for a cascade is also provided, comprising the following steps: Design and process the accessories for the mold core frame, and assemble them into a mold core frame structure; Process general-purpose blanks of various specifications and sizes, and reserve a glue area on the general-purpose blanks for card tray injection molding; Obtain the specifications of the card tray to be injection molded; The molding structure that matches the card tray to be injected is processed in the glue area of ​​the general blank; The various general-purpose blanks are assembled and installed on the mold core frame to complete the assembly of the mold core structure.

[0016] Furthermore, a cassette injection mold is provided, which includes an upper mold assembly, a lower mold assembly, and the aforementioned cassette modular mold core structure. The cassette modular mold core structure is disposed between the upper mold assembly and the lower mold assembly. The upper mold structure has a sprue for casting plastic material. The upper mold assembly and the lower mold assembly are detachably connected.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The modular mold core structure, preparation method, and injection mold for card trays provided by this invention reserve a glue area on a universal blank of the mold core assembly, which is not limited to a specific molding structure. After determining the card tray specifications, targeted design and processing are then carried out. This allows the same basic mold structure to adapt to various card trays of different specifications and shapes, improving the versatility of the card tray injection mold. By concentrating the molding differences of the card tray in the glue area structure, when changing the card tray specifications, only the corresponding mold core glue area and related components need to be replaced or processed, avoiding repeated design and manufacturing of the entire mold, thereby reducing mold development costs and processing cycles. Furthermore, through the standardized design of the universal blank, the mold core can be stored as a unified reserve material, processed only after specific product requirements are determined. This helps reduce the quantity of mold cores in stock, reduces material waste, and facilitates the modularization and standardization of the card tray mold structure. It also improves the convenience of mold assembly and maintenance, and is suitable for injection molding needs of card trays of various specifications and shapes. It can meet the application scenarios of multi-variety, small-batch, and rapid changeover production, and has good engineering practicality and promotional value. Attached Figure Description

[0018] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A three-dimensional schematic diagram of the overall structure of the modular core structure of the cassette provided by the present invention; Figure 2 This is a three-dimensional schematic diagram of the mold core component structure in the modular mold core structure provided by the present invention; Figure 3 This is a schematic diagram showing the disassembly of the rear mold insert in the modular mold core structure provided by the present invention; Figure 4 This is a schematic diagram showing the disassembly of the front mold insert in the modular mold core structure provided by the present invention; Figure 5This is a schematic diagram of the material preparation for each module of the mold core assembly in the modular mold core structure provided by the present invention; Figure 6 This is a three-dimensional schematic diagram of the injection mold for the card holder provided by the present invention.

[0020] The markings in the diagram are explained as follows: 1. Mold base; 2. Mounting slot; 3. Mold core assembly; 31. Mold core frame; 32. General blank; 33. Glue area; 34. Front mold insert; 35. Rear mold insert; 36. Cap structure; 37. Slide structure; 38. Glue runner; 4. Upper mold assembly; 5. Lower mold assembly; 6. Sprue. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] Example 1 Please refer to Figures 1-5A modular mold core structure for a card tray is provided, comprising a mold frame 1, which is composed of multiple mold strips and templates. Two mounting slots 2 are formed on the mold frame 1, and two rows of mold core assemblies 3 are installed in the two mounting slots 2. The mold core assemblies 3 in the same mounting slot 2 are arranged side-by-side. Each mold core assembly 3 includes a mold core frame 31 and multiple universal blanks 32. Each universal blank 32 is marked with a number, such as A01, A02, B01, B02, etc., for easy identification. Each universal blank 32 has a glue area 33 for forming the injection molding area of ​​the card tray. The glue area 33 does not initially limit the specific shape of the card tray. The mold has a molded structure that can be designed and processed according to the specifications and dimensions of different card trays, thereby forming a molding structure that matches the card tray to be injected. According to the specifications and dimensions of the card tray, the corresponding universal blank 32 is selected, and the molding structure of the corresponding part of the card tray is processed in the glue area 33 of each universal blank 32. Then, the universal blank 32 is assembled on the mold core frame 31 to form the mold core assembly 3. When different card trays need to be injected, the corresponding universal blank 32 is selected to process the glue area 33. In this way, the universal blank 32 only needs to be prepared, which improves the versatility of the card tray injection mold. The modules that can be used for all card trays are also assembled and fixed together with the mold core frame 31.

[0026] In this embodiment, all general-purpose blanks 32 adopt standardized design. Each type of general-purpose blank 32 is standardized, such as square, round, etc., which can facilitate assembly and ensure the versatility of the general-purpose blanks 32.

[0027] The mold core assembly 3 is also divided into front mold insert 34 and rear mold insert 35 based on its functional type. Both front mold insert 34 and rear mold insert 35 include a mold core frame 31 and at least one universal blank 32. The universal blanks 32 of the front mold insert 34 and rear mold insert 35 correspond one-to-one. After the front mold insert 34 and rear mold insert 35 are closed, they form a card holder molding structure, thus forming a complete card holder injection cavity. Specifically, the card holder molding structure formed by the glue area 33 includes a card holder cap structure 36 and a sliding structure 37. The sliding structure 37 includes at least one of the following: card holder body contour, card holder structure, limiting structure, and snap-fit ​​structure. That is to say, the glue area 33 of the universal blank 32 needs to form a card holder cap structure 36 according to the type and specifications of the card holder. This is the most important part. Then there is the sliding structure 37, which mainly plays the role of positioning and forming the micro-structure of the card holder. Different sliding structures 37 are selected according to different card holders. 7. For some card holders that lack a sliding structure 37, this design is unnecessary. The glue area 33 is a regular or irregular reserved molding area, and its specific shape is not limited. Therefore, when manufacturing the mold core structure of the card holder, only these structures need to be prepared, covering the main functional structures of the card holder. Of course, the card cap structure 36 and the sliding structure 37 have different structures on the front mold insert 34 and the rear mold insert 35, respectively, indicated by the labels A and B for easy differentiation. Furthermore, the universal blanks 32 forming the card cap structure 36 and each sliding structure 37 are independently set, facilitating disassembly and replacement for different card holder types. This prevents interference between different universal blanks 32. The universal blank 32 forming the card cap structure 36 is detachably connected to the mold core frame 31. As the most important part, the card cap structure 36 can be disassembled independently, facilitating the replacement of different card holder card cap structures 36. Additionally, the universal blank 32 of the front mold insert 34 is equipped with a glue channel 38, which is used to introduce injection plastic into the mold cavity.

[0028] Example 2 This embodiment provides a method for preparing a modular core structure for a cassette, which includes the following steps: Design and process the accessories of the mold core frame 31, and assemble them into the structure of the mold core frame 31; A general-purpose blank 32 of various specifications and sizes is processed. A glue area 33 for card tray injection molding is reserved on the general-purpose blank 32. The glue area 33 does not have a specific card tray molding structure. The general-purpose blank 32 can be pre-processed and stored as a standard blank. Obtain the specifications of the card tray to be injection molded; The molding structure matching the card holder to be injection molded is processed in the glue area 33 of the general blank 32; Each general-purpose blank 32 is assembled and installed on the mold core frame 31 to complete the assembly of the mold core structure of the corresponding card holder.

[0029] When changing to a different specification of card holder, it is only necessary to redesign and process the corresponding molding structure on the glue area 33 of the new universal blank 32, without redesigning the entire mold, which helps to reduce the number of mold cores in stock and reduce material waste.

[0030] Example 3 like Figure 6 As shown, this embodiment provides a cassette injection mold. The injection mold has the modular mold core structure prepared in Embodiment 2, and also includes an upper mold assembly 4 and a lower mold assembly 5. The cassette modular mold core structure is located between the upper mold assembly 4 and the lower mold assembly 5. The upper mold structure has a sprue 6 for pouring plastic material. The upper mold assembly 4 and the lower mold assembly 5 are detachably connected. The upper mold structure and the lower mold structure are detachably connected. Other structures included in the upper mold structure and the lower mold structure are conventional prior art and will not be described in detail here. After the injection mold is assembled, plastic material is injected into the mold core structure from the sprue 6, thereby forming the cassette injection structure in the mold cavity.

[0031] The modular mold core structure, preparation method, and working principle of the injection mold for card trays provided by this invention are as follows: By reserving a glue area 33 on the universal blank 32 of the mold core assembly 3 without limiting the specific molding structure, and then designing and processing it specifically after determining the card tray specifications, the same basic mold structure can be adapted to various card trays of different specifications and shapes, which is beneficial to improving the versatility of the card tray injection mold; by concentrating the molding differences of the card tray in the glue area 33 structure, when changing the card tray specifications, only the corresponding mold core glue area 33 and related disassemblies need to be replaced or processed, avoiding repeated design and manufacturing of the entire mold, thereby reducing mold development costs and processing cycles; through the standardized design of the universal blank 32, the mold core can be stored as a unified reserve material, and processed after determining the specific product requirements, which is beneficial to reducing the number of mold cores in stock, reducing material waste, and realizing the modularization and standardization of the card tray mold structure, improving the convenience of mold assembly and maintenance, and is suitable for the injection molding needs of card trays of multiple specifications and shapes, which can meet the application scenarios of multi-variety, small-batch and rapid changeover production, and has good engineering practicality and promotion value.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A modular mold core structure for a cassette, comprising a mold frame on which at least one set of mold core components are disposed, characterized in that, The mold core assembly includes a mold core frame and at least one general-purpose blank. The general-purpose blank has a glue area for forming the injection molding area of ​​the card tray. The glue area does not limit the specific molding structure of the card tray in the initial state, and can be designed and processed according to the specifications and dimensions of different card trays to form a molding structure that matches the card tray to be injected.

2. The modular core structure of the cassette according to claim 1, characterized in that, The general-purpose blank adopts a standardized structural design.

3. The modular core structure of the cassette according to claim 1, characterized in that, The mold core assembly includes a front mold insert and a rear mold insert. Both the front mold insert and the rear mold insert include a mold core frame and at least one universal blank. After the front mold insert and the rear mold insert are closed, they form a card holder molding structure.

4. The modular core structure of the cassette according to claim 3, characterized in that, The card holder molding structure formed by the adhesive area includes a card cap structure and a sliding structure. The sliding structure includes at least one of the following: card holder body outline, card position structure, limiting structure, and snap-on structure. According to claim 4, a modular mold core structure for a card holder is characterized in that the common blanks forming the card cap structure and each row position structure are set independently.

5. A modular core structure for a cassette according to claim 4, characterized in that, The universal blank forming the cap structure is detachably connected to the mold core frame.

6. A modular core structure for a cassette according to claim 1, characterized in that, The mold frame is provided with at least one mounting slot, and the mold core frame is arranged side by side along the mounting slot.

7. A modular core structure for a cassette according to claim 1, characterized in that, The adhesive area is a regular or irregular pre-formed area.

8. A method for preparing a modular core structure for a cassette, characterized in that, It is used to prepare the cassette modular core structure according to any one of claims 1-8, the method comprising the following steps: Step S1: Design and process the accessories of the mold core frame, and assemble them into a mold core frame structure; Step S2: Process general-purpose blanks of various specifications and sizes, and reserve the glue area for card holder injection molding on the general-purpose blanks; Step S3: Obtain the specifications of the card tray to be injection molded; Step S4: Process the molding structure in the glue area of ​​the general blank to match the card tray to be injected; Step S5: Assemble and install each general-purpose blank onto the mold core frame to complete the assembly of the mold core structure.

9. A card holder injection mold, characterized in that, The invention includes an upper mold assembly, a lower mold assembly, and a modular mold core structure for a card tray as described in any one of claims 1-8. The modular mold core structure for a card tray is disposed between the upper mold assembly and the lower mold assembly. The upper mold structure has a sprue for casting plastic material. The upper mold assembly and the lower mold assembly are detachably connected.

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