Injection mold and anti-pressing structure thereof

Abstract

The utility model discloses an injection mold and its anti -bruising structure, including movable mould, movable mould is provided with insert unit and be used for the ejector pin assembly of ejecting insert unit, insert unit includes the ejector insert for detachable connection insert and the guide insert assembled in the one end of ejector insert away from insert, and the movable mould of ejector insert and guide insert is assembled respectively in movable mould, when insert is placed in the cavity of injection mold through insert unit, relies on the self -lubricating of guide insert to import it into the cavity, and so can effectively avoid the shovel iron scrap when insert is placed into the cavity, prevents bruising movable mould ren simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold and its anti-pressure damage structure. Background Technology

[0002] Inserts are auxiliary parts embedded inside injection molds to assist in molding or enhance the functionality of injection molded products. Due to the adverse effects of the machining errors of each part itself and the motion errors of the robot handling the inserts, inserts are prone to generating metal chips due to collisions when placed into the cavity of the injection mold. These metal chips can also damage the moving mold core, which affects the production yield, causes an excessively high rework rate of the moving mold or lower mold, and delays the production cycle. Utility Model Content

[0003] To address the aforementioned problems, this invention provides an injection mold and its anti-damage structure, which effectively prevents the generation of metal chips when inserts are placed into the cavity, while also preventing damage to the moving mold core.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: This utility model provides an anti-pressure damage structure for injection molds, including a moving mold, wherein the moving mold is provided with an insert unit and an ejector pin assembly for ejecting the insert unit; the insert unit includes an ejector insert for detachably connecting an insert and a guide insert assembled on the ejector insert at the end opposite to the insert; the ejector insert and the guide insert are respectively movably assembled on the moving mold core of the moving mold; when the insert is placed in the cavity of the injection mold through the insert unit, it is guided into the cavity by the self-lubrication of the guide insert, thereby forming an anti-pressure damage structure.

[0005] Furthermore, the guide insert is a polyoxymethylene (POM) insert.

[0006] Furthermore, the outer diameter of the guide insert is equal to the outer diameter of the ejector insert at the end closest to the guide insert.

[0007] Furthermore, the guide insert is detachably mounted on the ejector insert.

[0008] Furthermore, the ejector assembly includes an ejector plate and ejector pins mounted on the ejector plate. The ejector pins are movably inserted into the support plate, moving template, and moving mold core of the injection mold, and are used to eject the insert unit along with the insert from the cavity.

[0009] This utility model provides an injection mold that includes at least the aforementioned anti-pressure damage structure.

[0010] The technical solution provided by this utility model has the following beneficial effects: When the insert is placed in the cavity of the injection mold through the insert unit, it is guided into the cavity of the injection mold by the self-lubrication of the guide insert. This effectively avoids the generation of metal chips and prevents damage to the moving mold core, thereby ensuring production yield, reducing the rework rate of the moving mold, and shortening the production cycle. Attached Figure Description

[0011] Figure 1 The figure shown is a cross-sectional view of the anti-pressure damage structure of the injection mold in Embodiment 1; Figure 2 The diagram shown is a schematic of an insert unit containing inserts in Embodiment 1. Detailed Implementation

[0012] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0013] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0014] Example 1 Reference Figure 1 and Figure 2 Embodiment 1 provides an anti-pressure damage structure for an injection mold (hereinafter referred to as the anti-pressure damage structure), including a moving mold 100, the moving mold 100 being provided with an insert unit 1 and an ejector pin assembly 2 for ejecting the insert unit 1.

[0015] Specifically, such as Figure 1 and Figure 2 As shown, the insert unit 1 includes an ejector insert 11 and a guide insert 12 detachably mounted on the lower end of the ejector insert 11. The ejector insert 11 and the guide insert 12 are movably mounted on the moving mold core 3, wherein the upper end of the ejector insert 11 is detachably mounted on the bottom of the insert 6.

[0016] like Figure 1 As shown, the ejector assembly 2 includes an ejector plate 22 and an ejector pin 21 mounted on the ejector plate 22. The ejector pin 21 is movably inserted through the support plate 5, the moving plate 4 and the moving mold core 3 of the injection mold, and is used to eject the insert unit 1 along with the insert 6 out of the cavity of the injection mold.

[0017] In this embodiment, the guide insert 12 is a polyoxymethylene (POM) insert, and the POM material itself has advantages such as high rigidity, high wear resistance and strong self-lubrication. The outer diameter of the guide insert 12 is equal to the outer diameter of the lower end of the ejector insert 11, so as to ensure that the tip of the lower end of the ejector insert 11 will not touch the outer surface of the moving mold core 3, and also to ensure that the guide insert 12 can be inserted into the moving mold core 3 and fit into the mounting through hole of the ejector insert 11.

[0018] Before injection molding, the insert 6, ejector insert 11, and guide insert 12 are placed into the moving mold core 3 by a robotic arm. When the mold is opened, the insert 6, ejector insert 11, and guide insert 12 are ejected from the cavity of the injection mold by ejector pin 21, and then the entire assembly is removed by the robotic arm.

[0019] When the insert 6 is placed in the cavity of the injection mold through the insert unit 1, it is guided into the cavity of the injection mold by the self-lubrication of the guide insert 12. This effectively avoids the generation of metal chips and prevents damage to the moving mold core 3, thereby ensuring production yield, reducing the rework rate of the moving mold 100, and shortening the production cycle.

[0020] Of course, in other embodiments, the guide insert 12 may also be made of other plastic materials that are self-lubricating and rigid.

[0021] Example 2 Example 2 provides an injection mold that includes at least the anti-pressure damage structure of Example 1.

[0022] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A pressure-resistant structure for an injection mold, comprising a moving mold, characterized in that: The moving mold is provided with insert units and ejector pin assemblies for ejecting the insert units; The insert unit includes an ejector insert for detachably connecting the insert and a guide insert assembled on the ejector insert at the end opposite to the insert; the ejector insert and the guide insert are respectively movably assembled to the moving mold core of the moving mold. When the insert is placed in the cavity of the injection mold through the insert unit, it is guided into the cavity by the self-lubrication of the guide insert, thereby forming an anti-pressure damage setting.

2. The anti-pressure damage structure for injection molds according to claim 1, characterized in that: The guide insert is a polyoxymethylene (POM) insert.

3. The anti-pressure damage structure for injection molds according to claim 1, characterized in that: The outer diameter of the guide insert is equal to the outer diameter of the ejector insert at the end closest to the guide insert.

4. The anti-pressure damage structure for injection molds according to any one of claims 1-3, characterized in that: The guide insert is detachably fitted to the ejector insert.

5. The anti-pressure damage structure for injection molds according to any one of claims 1-3, characterized in that: The ejector assembly includes an ejector plate and ejector pins mounted on the ejector plate. The ejector pins are movably inserted into the support plate, moving template, and moving mold core of the injection mold, and are used to eject the insert unit along with the insert from the cavity.

6. An injection mold, characterized in that: It includes at least the anti-pressure injury structure as described in any one of claims 1-5.

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