Anti-edge-covering integrated structure die

Abstract

The utility model discloses a reverse edge covering integrated structure die, which relates to the technical field of dies, and comprises an upper die assembly, a lower die assembly and an elastic buffer assembly, the upper die assembly comprises an upper die plate and an upper die core fixedly connected to the lower portion of the upper die plate, and the edge of the bottom of the upper die core is in a concave cambered surface shape so as to form an arc curved surface structure. The lower die assembly comprises a lower die plate and a lower die core fixedly connected into the lower die plate, a lower die cavity corresponding to the lower die core is formed along the parting surface of the lower die plate, and the upper die plate is in butt joint with the lower die plate so that the upper die core can stretch into the lower die cavity to be in butt joint with the lower die core. A gap is formed between the circular arc curved surface structure and the inner side wall surface of the lower mold cavity; the lower die assembly is further provided with a heating device used for heating a product placed in the lower die cavity. The elastic buffering assembly is arranged between the upper die assembly and the lower die assembly and comprises a plurality of springs. And a product can be formed at one time.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to an integrated reverse edge-wrapping structure mold. Background Technology

[0002] In the IML (In-Mold Insert) industry, optimizing product appearance and performance remains a crucial direction for technological development. Currently, most IML products feature right angles or small-angle reverse bevels on the product face and sides. This traditional edge-sealing structure design and molding method has many limitations in actual production and application.

[0003] From a structural design perspective, the abrupt transitions of right-angled or slightly angled edging products lack visual smoothness and aesthetic appeal, failing to meet consumers' increasingly sophisticated aesthetic demands. Furthermore, during use, sharp right-angled or slightly angled edges can easily scratch users, posing a safety hazard. In terms of manufacturing processes, this type of edging structure typically requires multiple steps, complex mold design, and extremely high precision in controlling process parameters. Even slight deviations can lead to insufficient dimensional accuracy, edge warping, cracking, and other quality issues, impacting product yield and significantly increasing production costs and time.

[0004] Furthermore, with the continuous expansion of IML technology applications, the market demand for diversified and complex edge-binding structures is becoming increasingly strong. Traditional right-angle or small-angle reverse bevel edge-binding products are no longer able to meet the design and functional requirements of new products. Therefore, there is an urgent need for a reverse edge-binding mold structure that can overcome the limitations of existing technologies and achieve a more aesthetically pleasing, safe, efficient, and suitable reverse edge-binding structure for diverse products. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] An integrated anti-edge mold includes an upper mold assembly, a lower mold assembly, and an elastic buffer assembly;

[0007] The upper mold assembly includes an upper template and an upper mold core fixedly connected to the lower part of the upper template. The bottom edge of the upper mold core has an inwardly concave arc shape to form a circular arc surface structure.

[0008] The lower mold assembly includes a lower template and a lower mold core fixedly connected within the lower template. A lower mold cavity corresponding to the lower mold core is formed along the parting surface of the lower template. The upper template is aligned with the lower template so that the upper mold core extends into the lower mold cavity to align with the lower mold core. A gap is formed between the arc-shaped curved surface structure and the inner wall of the lower mold cavity. The lower mold assembly also includes a heating device for heating the product placed inside the lower mold cavity.

[0009] The elastic buffer assembly is disposed between the upper mold assembly and the lower mold assembly, and includes several springs.

[0010] As a further embodiment of this utility model: the bottom of the upper mold core is connected to a molding insert, and the bottom edge of the molding insert is provided with the arc-shaped surface structure.

[0011] As a further embodiment of this utility model: the bottom of the upper mold core is provided with an installation groove, and the molding insert is detachably connected to the installation groove;

[0012] The molded insert is provided with a first positioning part located at its center and a first locking part surrounding the first positioning part;

[0013] The mounting groove is provided with a second positioning structure that cooperates with the first positioning structure, and a second locking part that cooperates with the first locking part.

[0014] As a further embodiment of this utility model: the arc-shaped surface structure has a continuous and smooth transition along the bottom edge of the molded insert.

[0015] As a further embodiment of this utility model: the arcuate surface structure at the bottom edge of the molding insert forms a gradually narrowing gap with the inner wall of the lower mold cavity, and the gap width gradually decreases along the mold closing direction.

[0016] As a further embodiment of this utility model: the heating device is a heating resistance wire, which is distributed inside the lower template.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1) The rounded surface structure of the bottom edge of the upper mold core makes the edge transition of the reverse edge smooth and natural. Compared with the traditional right angle or small angle reverse edge, it eliminates sharp edges, which not only improves the appearance of the product, but also prevents users from being scratched during use and improves the safety of the product.

[0019] 2) This mold integrates the reverse edge forming process into a single mold closing action through an integrated structural design. Compared with the traditional edge-wrapping structure, which requires multiple processes, this simplifies the production process. At the same time, the optimization of the mold structure reduces the reliance on complex process parameter control, lowers the probability of quality problems such as insufficient dimensional accuracy, edge warping, and cracking during production, and improves the product qualification rate, thereby effectively reducing production costs and production cycle.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the upper mold assembly in this utility model;

[0024] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0025] Figure 4 yes Figure 2 A schematic diagram of the localized explosion structure;

[0026] Figure 5 This is a structural schematic diagram of the lower mold assembly in this utility model;

[0027] Figure 6 This is a cross-sectional structural schematic diagram of the present invention;

[0028] Figure 7 yes Figure 6 A magnified structural diagram at point B in the middle.

[0029] The reference numerals and names in the figure are as follows:

[0030] 1. Upper template; 2. Upper mold core; 3. Arc-shaped surface structure; 4. Lower template; 5. Lower mold core; 6. Lower mold cavity; 7. Gap; 8. Spring; 9. Molding insert; 10. First positioning part; 11. First locking part. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-7 In this embodiment of the utility model, an integrated anti-edge wrapping structure mold includes an upper mold assembly, a lower mold assembly, and an elastic buffer assembly.

[0033] The upper mold assembly includes an upper template 1 and an upper mold core 2 fixedly connected to the lower part of the upper template 1. The bottom edge of the upper mold core 2 is in the shape of an inwardly concave arc surface to form a circular arc surface structure 3.

[0034] The lower mold assembly includes a lower template 4 and a lower mold core 5 fixedly connected within the lower template 4. A lower mold cavity 6 corresponding to the lower mold core 5 is formed along the parting surface of the lower template 4. The upper template 1 is connected to the lower template 4 so that the upper mold core 2 extends into the lower mold cavity 6 to connect with the lower mold core 5. A gap 7 is formed between the arc-shaped curved surface structure 3 and the inner wall of the lower mold cavity 6. The lower mold assembly is also equipped with a heating device for heating the product placed in the lower mold cavity 6.

[0035] The elastic buffer assembly is disposed between the upper mold assembly and the lower mold assembly, and includes several springs 8.

[0036] In this invention, the heating device equipped in the lower mold assembly can heat the product (which can be the product itself or materials used for product processing, such as IML films or profiles, plus the product itself) placed in the lower mold cavity 6. After being heated, the plasticity of the IML film or profile increases, reducing the external force required for deformation. At this time, the upper mold assembly and the lower mold assembly are closed, and the arc-shaped curved surface structure 3 at the bottom edge of the upper mold core 2 plays a role in providing deformation guidance for the heated and softened material.

[0037] Specifically, the upper mold plate 1 mates with the lower mold plate 4, and the upper mold core 2 extends into the lower mold cavity 6 and mates with the lower mold core 5. During this process, the gap 7 formed between the arc-shaped curved surface structure 3 and the inner wall of the lower mold cavity 6 gradually decreases as the mold closes. The change in gap 7 generates inward and upward extrusion force on the material edge, forcing the material to fold upward and fit along the arc-shaped curved surface structure 3, thereby achieving the forming of the reverse edge.

[0038] An elastic buffer assembly, consisting of several springs 8, is positioned between the upper and lower mold assemblies. During mold closing, the springs 8 act as a buffer, preventing rigid collisions between the upper and lower mold assemblies, ensuring a smooth mold closing process, providing a stable pressure environment for the reverse edge forming of the material, and preventing uneven material deformation or damage due to sudden pressure changes.

[0039] In summary, the rounded curved surface structure 3 at the bottom edge of the upper mold core 2 makes the edge transition of the reverse edge wrapping natural and smooth. Compared with traditional right angle or small-angle reverse bevel edge wrapping, it eliminates sharp edges, which not only improves the aesthetics of the product appearance, but also prevents users from being scratched during use, thus improving product safety. This mold integrates the reverse edge wrapping forming process into a single mold closing action through an integrated structural design. Compared with the traditional edge wrapping structure that requires multiple processes, it simplifies the production process. At the same time, the optimization of the mold structure reduces the dependence on complex process parameter control, reduces the probability of quality problems such as insufficient dimensional accuracy, edge warping, and cracking during production, improves the product qualification rate, and thus effectively reduces production costs and production cycle.

[0040] In this embodiment of the present invention, the bottom of the upper mold core 2 is connected to a molding insert 9, and the bottom edge of the molding insert 9 is provided with the arc-shaped surface structure 3;

[0041] The upper mold core 2 has an installation groove at its bottom, and the molding insert 9 is detachably connected to the installation groove;

[0042] The molded insert 9 is provided with a first positioning part 10 located at its center and a first locking part 11 surrounding the first positioning part 10.

[0043] The mounting groove is provided with a second positioning structure that cooperates with the first positioning structure, and a second locking part that cooperates with the first locking part 11.

[0044] The mounting groove at the bottom of the upper mold core 2 provides a mounting base for the molding insert 9. The detachable connection allows for flexible replacement of the molding insert 9. The first positioning part 10 at the center of the molding insert 9 engages with the second positioning structure within the mounting groove. Utilizing the precise geometry of the positioning structure (such as pin hole fit, stepped surface fit, etc.), rapid and unique positioning is achieved during installation, ensuring the accuracy of the molding insert 9's position in both horizontal and vertical directions, laying the foundation for subsequent reverse edge forming. The first locking part 11 surrounding the first positioning part 10 interacts with the second locking part within the mounting groove. The locking part employs a snap-fit, threaded, or other structural form to firmly lock the molding insert 9 within the mounting groove, preventing displacement or loosening of the molding insert 9 under high pressure and vibration conditions during mold closing. This ensures the molding insert 9 functions stably during the reverse edge forming process, allowing the material to be precisely formed according to the arc-shaped surface structure 3 of its bottom edge.

[0045] Furthermore, the curved surface structure 3 of the bottom edge of the molding insert 9 of different specifications is specifically designed in terms of parameters such as radius of curvature, arc range, and surface length. When it is necessary to adapt to the same product series (i.e., the edge binding structure of the same product is slightly different), it is only necessary to remove the original molding insert 9 from the mounting slot, and then quickly install the molding insert 9 of the corresponding specification onto the upper mold core 2 through the positioning and locking structure. This allows the mold to meet the requirements of the reverse edge binding process of the new product without modifying other parts of the mold.

[0046] In this embodiment of the present invention, the arc-shaped surface structure 3 has a continuous and smooth transition along the bottom edge of the molded insert 9.

[0047] During the reverse edge forming process, the profile or diaphragm undergoes plastic deformation along the arc-shaped surface structure 3 of the forming insert 9 under hot pressing. Designing the arc-shaped surface structure 3 to be continuous and smoothly transition along the bottom edge of the forming insert 9 ensures that the force on the material is evenly or relatively evenly distributed during deformation, thus avoiding localized stress concentration caused by abrupt structural changes. The continuous and smooth surface guides the material to flow smoothly along a preset path, allowing the material edge to conform to the surface to complete the reverse edge forming, ensuring the stability and controllability of the forming process, while reducing the risk of wrinkles, cracks, and other problems caused by uneven stress on the material.

[0048] In this embodiment of the present invention, a gradually narrowing gap 7 is formed between the arcuate surface structure 3 at the bottom edge of the molding insert 9 and the inner wall of the lower mold cavity 6, and the width of the gap 7 gradually decreases along the mold closing direction.

[0049] During the mold closing process, the upper mold assembly drives the molding insert 9 downward. Due to the formation of a gradually narrowing gap 7 between the arc-shaped surface structure 3 at the bottom edge of the molding insert 9 and the inner wall of the lower mold cavity 6, the width of the gap 7 gradually decreases along the mold closing direction as the mold closing stroke progresses. After the profile or diaphragm placed in the lower mold cavity 6 is heated and softened, it is subjected to the extrusion force generated by the gradually narrowing gap 7. The inward and upward constraint force on the edge of the material continuously increases, forcing the material to gradually fold upward and fit along the arc-shaped surface structure 3. Through the gradual control of the gap 7 size, the precise shaping of the reverse edge of the material is achieved.

[0050] In this embodiment of the invention, the heating device is a heating resistance wire distributed inside the lower template 4.

[0051] The heating resistance wire serves as the core heating element. Heat is generated by the flow of current through the wire; according to Joule's law, electrical energy is converted into heat energy when current passes through a resistor. The heating resistance wire is distributed inside the lower mold plate 4. Utilizing the excellent thermal conductivity of the metal lower mold plate 4, heat is evenly conducted to the lower mold cavity 6. After the profile or film to be processed is placed in the lower mold cavity 6, it can absorb heat through thermal conduction and radiation, reaching the temperature required for material softening. This provides the necessary temperature conditions for subsequent reverse edge forming, ensuring that the material undergoes plastic deformation in a suitable thermoplastic state.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A mold with an integrated reverse edge-wrapping structure, characterized in that, Includes upper mold assembly, lower mold assembly, and elastic buffer assembly; The upper mold assembly includes an upper template and an upper mold core fixedly connected to the lower part of the upper template. The bottom edge of the upper mold core has an inwardly concave arc shape to form a circular arc surface structure. The lower mold assembly includes a lower template and a lower mold core fixedly connected within the lower template. A lower mold cavity corresponding to the lower mold core is formed along the parting surface of the lower template. The upper template is aligned with the lower template so that the upper mold core extends into the lower mold cavity to align with the lower mold core. A gap is formed between the arc-shaped curved surface structure and the inner wall of the lower mold cavity. The lower mold assembly also includes a heating device for heating the product placed inside the lower mold cavity. The elastic buffer assembly is disposed between the upper mold assembly and the lower mold assembly, and includes several springs.

2. The integrated anti-edge sealing structure mold according to claim 1, characterized in that, The bottom of the upper mold core is connected to a molding insert, and the bottom edge of the molding insert is provided with the arc-shaped surface structure.

3. The integrated anti-edge sealing structure mold according to claim 2, characterized in that, The upper mold core has an installation groove at its bottom, and the molding insert is detachably connected to the installation groove; The molded insert is provided with a first positioning part located at its center and a first locking part surrounding the first positioning part; The mounting groove is provided with a second positioning structure that cooperates with the first positioning structure, and a second locking part that cooperates with the first locking part.

4. A reverse-edge integrated structure mold according to claim 2 or 3, characterized in that, The arc-shaped surface structure transitions continuously and smoothly along the bottom edge of the molded insert.

5. A reverse-edge integrated structure mold according to claim 2 or 3, characterized in that, The arc-shaped surface structure at the bottom edge of the molding insert forms a gradually narrowing gap with the inner wall of the lower mold cavity, and the width of the gap gradually decreases along the mold closing direction.

6. The integrated anti-edge sealing structure mold according to claim 1, characterized in that, The heating device is a heating resistance wire, which is distributed inside the lower template.

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