A cap mold structure

Abstract

The utility model discloses an end cap mould structure, including upper die body, lower die body, upper forming part, lower forming part and hot runner upper forming part fixed setting on the upper die body, and lower forming part sets up on the lower die body, when the upper die body is combined with the lower die body, and the lower forming part is inserted at least partially in the upper forming part and is provided with the cavity between both, hot runner sets up on the upper die body, and hot runner has integrated heating source, and hot runner is provided with runner inlet and runner outlet, and runner outlet and cavity intercommunication each other. Hot runner has integrated heating source, can make the molten raw material in the runner keep the molten state, avoid solidifying in the runner and form too much water mouth material. Runner outlet directly communicates with cavity, reduces the path length of raw material from runner into cavity, further reduces the production amount of water mouth material, significantly reduces raw material waste, and reduces the raw material cost of production.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an end cap mold structure. Background Technology

[0002] Currently, the production and processing of end caps mainly adopts injection molding. This process has been widely used in the end cap manufacturing industry due to its advantages such as high production efficiency, good product dimensional stability, and the ability to mass-produce complex-shaped products. However, in actual production, existing molds used for injection molding of end caps have certain defects.

[0003] Specifically, due to unreasonable gate design and runner layout in the mold, long sprue sections form on the end cap product after the molten raw material fills the mold cavity during injection molding. Sprue sections refer to the portion of plastic that solidifies within the runner after injection molding, as the molten plastic flows into the cavity through the runner. This portion is not part of the end cap product itself and needs to be removed in subsequent processes. Long sprue sections mean excessive raw material consumption during production. This waste material not only increases the raw material cost of end cap production and causes significant material waste, but also increases the burden and labor costs of subsequent sprue removal, hindering the economic efficiency of end cap production. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an end cap mold structure.

[0005] An end cap mold structure designed for this purpose includes an upper mold body, a lower mold body, an upper molding part, a lower molding part, and a hot runner.

[0006] The upper forming part is fixedly disposed on the upper mold body, and the lower forming part is disposed on the lower mold body;

[0007] When the upper mold body and the lower mold body are closed, the lower molded part is at least partially inserted into the upper molded part and a cavity is provided between the two.

[0008] The hot runner is disposed on the upper mold body. The hot runner integrates a heating source and has a runner inlet and a runner outlet. The runner outlet is connected to the cavity.

[0009] Preferably, the lower molded part is provided with a first cooling channel, and the lower mold body is provided with a second cooling channel that communicates with the first cooling channel.

[0010] Preferably, a third cooling channel is provided between the upper mold body and the upper molded part, and the upper mold body is provided with a fourth cooling channel that communicates with the third cooling channel.

[0011] Preferably, the upper mold body is provided with an injection port that communicates with the flow channel inlet.

[0012] Preferably, the heating source is an electric heating element.

[0013] Compared with the prior art, this invention has several advantages. First, the hot runner integrates a heating source, which keeps the molten material in the runner molten and prevents it from solidifying and forming excessive sprue. Second, the runner outlet is directly connected to the mold cavity, reducing the path length of the material from the runner into the mold cavity, further reducing the amount of sprue generated, significantly reducing material waste, and lowering the raw material cost of production.

[0014] On the other hand, the significant reduction in sprue material reduces the burden of subsequent sprue removal processes on end cap products, saving labor and time costs and improving overall production efficiency. Simultaneously, the mating method between the upper and lower molded parts ensures precise cavity formation, which helps improve the dimensional accuracy and quality stability of the end cap products, thereby enhancing their market competitiveness. Attached Figure Description

[0015] Figure 1 This is one of the cross-sectional structural schematic diagrams of this utility model;

[0016] Figure 2 This is the second cross-sectional structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the dissected surface structure of this utility model;

[0018] Figure 4 This is the third cross-sectional structural schematic diagram of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0020] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0022] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0023] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0024] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0025] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0026] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0027] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" 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 or an electrical connection; 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0028] See Figures 1-5An end cap mold structure includes an upper mold body 10, a lower mold body 20, an upper molding part 30, a lower molding part 40, and a hot runner 60; the upper molding part 30 is fixedly disposed on the upper mold body 10, and the lower molding part 40 is disposed on the lower mold body 20; when the upper mold body 10 and the lower mold body 20 are closed, the lower molding part 40 is at least partially inserted into the upper molding part 30, and a cavity 50 is provided between the two; the hot runner 60 is disposed on the upper mold body 10, the hot runner 60 integrates a heating source, the hot runner 60 is provided with a runner inlet 610 and a runner outlet 620, and the runner outlet 620 is interconnected with the cavity 50.

[0029] The working principle of this end cap mold structure is as follows:

[0030] During the injection molding of the end cap, the upper mold body and the lower mold body are first closed. During the mold closing process, the lower molded part will be at least partially inserted into the upper molded part, at which point a cavity for molding the end cap is formed between the upper and lower molded parts.

[0031] After the mold is closed, the molten material enters through the inlet of the hot runner. Because the hot runner integrates a heating source, it continuously heats the molten material inside, ensuring that the material remains molten throughout its flow and preventing solidification. Subsequently, the molten material flows along the internal channels of the hot runner and finally enters the mold cavity through the outlet.

[0032] After the molten material fills the entire cavity, it is held under pressure and cooled for a certain period of time. The material inside the cavity solidifies and forms the end cap 70 product. Then, the upper mold body and the lower mold body are separated to open the mold. The lower molded part moves with the lower mold body and separates from the upper molded part. The molded end cap 70 product can then be taken out of the cavity, completing one injection molding process of the end cap 70.

[0033] See Figure 1 The lower molded part 40 is provided with a first cooling channel 400, and the lower mold body 20 is provided with a second cooling channel 200 that communicates with the first cooling channel 400. When the molten material enters the cavity through the hot runner and completes filling, the external cooling medium (such as cooling water) can flow into the first cooling channel through the second cooling channel. Since the first cooling channel is directly set in the lower molded part, it can come into close contact with the end cap product in the cavity and quickly absorb the heat released during the solidification process of the molten material; while the second cooling channel, as a channel for the delivery and return of the cooling medium, ensures the continuous circulation of the cooling medium and provides stable cooling power for the first cooling channel.

[0034] See Figure 2A third cooling channel 300 is provided between the upper mold body 10 and the upper molded part 30. The upper mold body 10 is provided with a fourth cooling channel 100 that communicates with the third cooling channel 300. The third cooling channel acts directly on the upper molded part, while the fourth cooling channel serves as a transport and return channel for the cooling medium, stably transporting the cooling medium to the third cooling channel and promptly discharging the medium after absorbing heat. When the mold is closed for injection molding, the upper molded part and the lower molded part together form the cavity. The third cooling channel can cool the part of the upper molded part that contacts the cavity at close range. Together with the first and second cooling channels at the lower molded part, it achieves a surrounding cooling of the cavity.

[0035] See Figure 4 and Figure 5 The upper mold body 10 is provided with an injection port 110 that communicates with the runner inlet 610. As a connection channel between the external injection molding equipment and the internal hot runner of the mold, the injection port accurately and stably guides the molten material output from the injection molding equipment into the runner inlet, providing a reliable transport path for the material to enter the mold cavity. This connection structure ensures that the molten material enters the hot runner according to a preset flow, and is then transported to the cavity via the runner outlet, achieving smooth flow of material from the injection molding equipment to the cavity and ensuring the continuity and stability of the injection molding process.

[0036] In this invention, the heating source is an electric heating element. The electric heating element comprises a heating rod and a heating coil.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cap mold structure, characterized in that: It includes an upper mold body (10), a lower mold body (20), an upper molding part (30), a lower molding part (40), and a hot runner (60); The upper molding part (30) is fixedly disposed on the upper mold body (10), and the lower molding part (40) is disposed on the lower mold body (20); When the upper mold body (10) and the lower mold body (20) are closed, the lower molding part (40) is at least partially inserted into the upper molding part (30) and a cavity (50) is provided between the two. The hot runner (60) is disposed on the upper mold body (10), the hot runner (60) integrates a heating source, the hot runner (60) is provided with a runner inlet (610) and a runner outlet (620), and the runner outlet (620) is connected to the cavity (50).

2. The end cap mold structure according to claim 1, characterized in that: The lower molded part (40) is provided with a first cooling channel (400), and the lower mold body (20) is provided with a second cooling channel (200) that is interconnected with the first cooling channel (400).

3. The end cap mold structure according to claim 1, characterized in that: A third cooling channel (300) is provided between the upper mold body (10) and the upper molded part (30), and the upper mold body (10) is provided with a fourth cooling channel (100) that is interconnected with the third cooling channel (300).

4. The end cap mold structure according to claim 1, characterized in that: The upper mold body (10) is provided with an injection port (110) that communicates with the flow channel inlet (610).

5. The end cap mold structure according to claim 1, characterized in that: The heating source is an electric heating element.

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