Plastic insert glue sealing mold

Abstract

The utility model discloses a glue sealing mold for a plastic insert, and relates to the technical field of glue sealing molds. Comprising a fixed mold, a movable mold and a product with an opening, the opening of the product is in interference connection with a plastic insert, a cavity is installed at the bottom of the fixed mold in an embedded mode, an installation cavity is formed in the top of the movable mold, a core matched with the cavity is installed in the installation cavity, and the core and the cavity are matched to be used for conducting glue sealing operation on the product containing the plastic insert. An exhaust block matched with the cavity is arranged between the fixed mold and the movable mold; and the top of the fixed mold is provided with a material injection port which is matched and communicated with the cavity and is used for injecting glue. According to the plastic insert glue sealing mold, the plastic insert is inserted into the opening of the product in an interference manner, and when the product is subjected to glue sealing treatment, continuous radial contact pressure is generated on the matching surface of the plastic insert and the product, so that the plastic insert and the product are tightly attached, a microcosmic gap is eliminated, a physical barrier is formed, and after the product is subjected to glue sealing, glue overflowing and burr phenomena do not occur in the opening of the product.

Description

Technical Field

[0001] This utility model relates to the field of sealing mold technology, specifically a sealing mold for plastic inserts. Background Technology

[0002] Silicone overmolding, also known as silicone coating, involves coating a plastic or metal part with a layer of silicone. Overmolded products combine the rigidity and structural strength of plastic and metal parts with the soft feel, elasticity, tear resistance, insulation, and waterproofing properties of silicone. Depending on the application, silicone overmolding can be categorized into several types: Full-coverage overmolding: This involves completely covering the plastic or metal part with silicone, ensuring the coating layer is not exposed after molding. Partial overmolding: This process also uses a plastic or metal framework to reinforce the silicone structure.

[0003] Traditional silicone sealing methods involve pressing together steel molds to coat the product with silicone, providing insulation, conductivity, shock absorption, and waterproofing. However, for products with openings, this method can cause excess silicone and rough edges at the openings. Utility Model Content

[0004] This invention provides a plastic insert sealing mold to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic insert sealing mold, comprising a fixed mold, a moving mold, and a product with an opening, wherein a plastic insert is interference-connected to the opening of the product, a cavity is embedded in the bottom of the fixed mold, and an installation cavity is opened in the top of the moving mold, wherein a core that mates with the cavity is installed in the installation cavity, and the core and cavity are used to accommodate the plastic insert for sealing operations, and an venting block that mates with the cavity is provided between the fixed mold and the moving mold.

[0006] Furthermore, the top of the fixed mold is provided with an injection port that mates with and communicates with the cavity for injection of adhesive.

[0007] Furthermore, the bottom of the fixed mold is provided with an upper mounting groove, and the top of the moving mold is provided with a lower mounting groove corresponding to the upper mounting groove. An exhaust block with its bottom end extending into the lower mounting groove is installed in the upper mounting groove.

[0008] Furthermore, two upper mounting slots are provided on both sides of the bottom of the fixed mold, the lower mounting slot on the top of the moving mold corresponds to the upper mounting slots, and the venting block is located at the edge of the cavity.

[0009] Furthermore, the exhaust block is a porous metal block with a porosity of 20%-25%.

[0010] Furthermore, the four corners of the top of the moving mold are provided with guide holes, and guide sleeves are installed in the guide holes. The four corners of the bottom of the fixed mold are fixedly connected with guide posts that can extend into the guide holes and slide with the guide sleeves.

[0011] Compared with the prior art, the present invention provides a plastic insert sealing mold with the following beneficial effects: the plastic insert sealing mold, by interference fitting the plastic insert into the opening of the product, generates continuous radial contact pressure between the plastic insert and the mating surface of the product during the sealing process, so that the two fit tightly together, eliminate micro gaps, form a physical barrier, and prevent glue overflow and burrs from appearing at the opening after the product is sealed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a structural diagram of the fixed mold and moving mold of this utility model after separation;

[0014] Figure 3 This is a schematic diagram of the structure of the plastic insert connected to the product of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the product after removing the plastic insert.

[0016] In the diagram: 1. Fixed mold; 2. Moving mold; 3. Cavity; 4. Mounting cavity; 5. Core; 6. Product; 7. Plastic insert; 8. Injection port; 9. Lower mounting groove; 10. Upper mounting groove; 11. Venting block; 12. Guide hole; 13. Guide post. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-3This utility model discloses a plastic insert sealing mold, including a fixed mold 1, a moving mold 2, and a product 6 with an opening. A plastic insert 7 is interference-fitted to the opening of the product 6. A cavity 3 is embedded in the bottom of the fixed mold 1, and an installation cavity 4 is opened in the top of the moving mold 2. A core 5 that mates with the cavity 3 is installed in the installation cavity 4. The core 5 and the cavity 3 work together to accommodate the plastic insert 7 in the product 6 for sealing. An venting block 11 that mates with the cavity 3 is provided between the fixed mold 1 and the moving mold 2. By interference-fitting the plastic insert 7 into the opening of the product 6, during the sealing process of the product 6, the mating surfaces of the plastic insert 7 and the product 6 generate continuous radial contact pressure, making the two fit tightly together, eliminating micro gaps, and forming a physical barrier. After the product 6 is sealed, no overflow or burrs will appear at its opening.

[0019] Between the sealing of product 6, the plastic insert 7 is interference-fitted to the opening of product 6 and placed on the core 5. Then the fixed mold 1 and the moving mold 2 are closed. After the sealing of product 6 is completed, because the plastic insert 7 is interference-fitted to the opening of product 6, the plastic properties form a durable sealing interface, making it less likely for the opening of product 6 to have overflow or rough edges. Then the plastic insert 7 on product 6 can be removed.

[0020] Specifically, the top of the fixed mold 1 is provided with an injection port 8 that communicates with the cavity 3 for injection of adhesive.

[0021] In this embodiment, the injection port 8 is used for the glue injection operation.

[0022] Specifically, the bottom of the fixed mold 1 is provided with an upper mounting groove 10, and the top of the moving mold 2 is provided with a lower mounting groove 9 corresponding to the upper mounting groove 10. An exhaust block 11 with its bottom end extending into the lower mounting groove 9 is installed in the upper mounting groove 10.

[0023] Two upper mounting slots 10 are provided on both sides of the bottom of the fixed mold 1. The lower mounting slot 9 on the top of the moving mold 2 corresponds to the upper mounting slots 10. The venting block 11 is located at the edge of the cavity 3.

[0024] In this embodiment, the exhaust block 11 can also be installed in the lower mounting slot 9, instead of the upper mounting slot 10.

[0025] When the fixed mold 1 and the moving mold 2 are closed, the upper mounting groove 10 and the lower mounting groove 9 cooperate to form a complete mounting groove for accommodating the venting block 11.

[0026] Specifically, the exhaust block 11 is a porous metal block, and the porosity of the exhaust block 11 is 20%-25%.

[0027] In this embodiment, the venting hole diameter of the venting block 11 is greater than 1.5mm, which can perform venting operations during the sealing process and avoid trapped air leading to poor filling of the soft glue or air bubbles.

[0028] Specifically, the four corners of the top of the moving mold 2 are provided with guide holes 12, and guide sleeves are installed in the guide holes 12. The four corners of the bottom of the fixed mold 1 are fixedly connected with guide posts 13 that can extend into the guide holes 12 and slide with the guide sleeves.

[0029] In this embodiment, the cooperation of the guide hole 12, the guide sleeve and the guide post 13 is to facilitate the demolding and mold closing operations of the moving mold 2 and the fixed mold 1, and to play a guiding role in the process of mold closing and demolding.

[0030] In summary, this plastic insert sealing mold, by inserting the plastic insert 7 into the opening of the product 6 with an interference fit, generates continuous radial contact pressure between the plastic insert 7 and the mating surface of the product 6 during the sealing process, so that the two fit tightly together, eliminate micro gaps, and form a physical barrier, so that no glue overflow or burrs will appear at the opening of the product 6 after sealing.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic insert sealing mold, comprising a fixed mold (1), a movable mold (2), and a product (6) having an opening, characterized in that: The opening of the product (6) is press-fitted with a plastic insert (7). The bottom of the fixed mold (1) is fitted with a cavity (3). The top of the moving mold (2) is provided with an installation cavity (4). The installation cavity (4) is fitted with a core (5) that mates with the cavity (3). The core (5) and the cavity (3) work together to accommodate the plastic insert (7) of the product (6) for sealing. An venting block (11) that mates with the cavity (3) is provided between the fixed mold (1) and the moving mold (2).

2. The plastic insert sealing mold according to claim 1, characterized in that: The top of the fixed mold (1) is provided with an injection port (8) that communicates with the cavity (3) for injection of glue.

3. The plastic insert sealing mold according to claim 1, characterized in that: The bottom of the fixed mold (1) is provided with an upper mounting groove (10), and the top of the moving mold (2) is provided with a lower mounting groove (9) corresponding to the upper mounting groove (10). An exhaust block (11) with its bottom end extending into the lower mounting groove (9) is installed in the upper mounting groove (10).

4. A plastic insert sealing mold according to claim 3, characterized in that: The fixed mold (1) has two upper mounting slots (10) on both sides of its bottom. The lower mounting slot (9) on the top of the moving mold (2) corresponds to the upper mounting slots (10). The venting block (11) is located at the edge of the cavity (3).

5. A plastic insert sealing mold according to claim 3, characterized in that: The exhaust block (11) is a porous metal block with a porosity of 20%-25%.

6. The plastic insert sealing mold according to claim 1, characterized in that: The moving mold (2) has guide holes (12) at its top four corners, and guide sleeves are installed in the guide holes (12). The fixed mold (1) has guide posts (13) at its bottom four corners that can extend into the guide holes (12) and slide with the guide sleeves.

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