Anti-extrusion and anti-rotation composite insert

Abstract

The utility model discloses a kind of anti-extraction anti-rotation composite inserts, it belongs to blow molding insert technical field, it solves the problem that insert of existing technology in blow molding part inner embedding is easy to extract, easy to rotate, and easy to damage blow molding spare part.It mainly includes outer lining, the outer lining includes limiting table and main body, the limiting table protrudes main body surface, the main body is equipped with cavity inside, inner lining is equipped in cavity, and inner lining is limited with cavity cooperation;Threaded hole is equipped on inner lining.This application is combined by plastic outer lining and metal inner lining, metal inner lining is embedded into plastic outer lining inside by injection molding process;Prevent composite insert from rotating and extracting in blow molding spare part.

Description

Technical Field

[0001] This utility model relates to the field of blow-molded insert technology, and more specifically, to a composite insert that prevents dislodgement and rotation. Background Technology

[0002] In fields such as landscaping machinery and plant protection machinery, various blow-molded components are required, such as fuel tanks and medicine boxes. During the manufacturing process, threaded metal inserts are often embedded into the blow-molded component body, and the threads of the inserts are used to fix the component to various mechanical equipment. However, because the metal inserts are machined parts with sharp edges, and the locking force of the inserts being directly encased in the blow-molded component is insufficient, in practical applications, when using screws to fasten the metal inserts, the inserts often rotate within the blow-molded component and cut it, leading to improper assembly and leakage of liquid within the blow-molded component, posing a significant safety hazard. Therefore, there is an urgent need to design a reliable insert for fixing blow-molded components. Utility Model Content

[0003] The purpose of this invention is to provide a composite insert that prevents detachment and rotation, in order to solve the problems in the prior art where inserts embedded in blow-molded parts are prone to detachment, rotation, and damage to blow-molded parts.

[0004] This utility model is achieved through the following technical solution: A composite insert for preventing dislodgement and rotation includes an outer liner, the outer liner including a limiting platform and a main body, the limiting platform protruding from the surface of the main body, the main body having a cavity inside, the cavity having an inner liner inside, the inner liner being fitted with the cavity for limiting; the inner liner having threaded holes.

[0005] Furthermore, the limiting platform is provided with anti-slip texture around its perimeter.

[0006] Furthermore, the anti-slip texture is vertical stripes.

[0007] Furthermore, the cavity is polygonal in shape, and the shape of the outer liner matches the shape of the cavity.

[0008] Furthermore, the outer side of the liner is provided with an annular groove, and the inner side of the cavity is provided with a limiting ring, which cooperates with the annular groove.

[0009] Furthermore, the cross-sectional shape of the lining is I-shaped.

[0010] Furthermore, the external shape of the main body is polygonal.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This application is composed of a plastic outer liner and a metal inner liner. The metal inner liner is embedded into the plastic outer liner through an injection molding process. The outer liner has a main body with a polygonal external shape, which serves to prevent the composite insert from rotating inside the blow-molded part. The outer liner has a limiting platform, which serves to prevent the composite insert from falling out. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of this utility model; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a diagram showing the usage state of this utility model.

[0013] In the diagram: 1. Outer liner; 2. Main body; 3. Inner liner; 4. Vertical stripes; 5. Blow-molded parts; 6. Limiting platform; 7. Threaded hole; 8. Limiting ring. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the creation of this utility model.

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Example 1: A composite insert for preventing dislodgement and rotation, such as... Figures 1-4 As shown, the device includes an outer liner 1, which comprises a limiting platform 6 and a main body 2. The limiting platform 6 protrudes from the surface of the main body 2 and is engaged under the molded blow-molded component 5, acting like a buckle to effectively prevent the entire insert from being pulled out axially. The main body 2 has an internal cavity, and an inner liner 3 is provided inside the cavity. The inner liner 3 is fitted with the cavity for limiting; the inner liner 3 has threaded holes 7.

[0017] The outer liner 1 is made of plastic to prevent the insert from cutting the blow-molded part 5 when it rotates inside. The inner liner 3 is specifically designed to provide the threaded hole 7 and can be made of a harder and more wear-resistant metal material than the outer liner 1 to withstand the force and wear of repeated bolt tightening. The metal inner liner 3 is embedded into the plastic outer liner 1 through injection molding. This utility model consists of a plastic outer liner 1 and a metal inner liner 3, with the metal inner liner 3 embedded into the plastic outer liner 1 through injection molding.

[0018] Example 2: A composite insert for preventing dislodgement and rotation, such as... Figure 2 As shown, the limiting platform 6 is surrounded by anti-slip textures. The anti-slip textures are vertical stripes 4; the anti-slip textures increase the contact area with the blow-molded parts 5, avoiding slippage caused by smooth surfaces.

[0019] like Figure 1 As shown, the cavity is polygonal in shape, and the outer shape of the outer liner 1 matches the shape of the cavity. The anti-slip texture of the limiting platform 6, in conjunction with the polygonal outer liner 1 and the polygonal main body 2, prevents rotation after the composite insert is embedded into the blow-molded part 5. The protruding limiting platform 6 prevents the composite insert from falling out after it is embedded into the blow-molded part 5.

[0020] The outer body 2 has a hexagonal external shape. The outer liner 1 has an interference fit with the blow-molded component 5 and resists rotational torque through its external shape, preventing the outer liner 1 from rotating in the blow-molded component 5.

[0021] like Figure 3 As shown, the inner liner 3 has an annular groove on its outer side and a limiting ring 8 on its inner side, which cooperates with the annular groove; the cross-sectional shape of the inner liner 3 is I-shaped. This is a key structure to prevent the inner liner 3 from axially dislodging from the cavity of the outer liner 1, thus preventing the metal inner liner 3 from rotating and dislodging after it is embedded in the plastic outer liner 1.

[0022] Everything else is the same as in Example 1.

[0023] In the production process, the metal inner liner 3 is first embedded into the plastic outer liner 1 through injection molding. During injection molding, the molten plastic fills the annular groove of the inner liner 3, and after cooling, it forms a limiting ring 8. During injection molding, a limiting platform 6 and anti-slip textures are formed on the plastic outer liner 1. In use, the present invention is embedded into the blow-molded part 5 by blow molding. The limiting platform 6 limits the blow-molded part 5, and the blow-molded part 5 can be fixed to various mechanical equipment through the threaded hole 7 of the inner liner 3.

[0024] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A composite insert for preventing dislodgement and rotation, characterized in that: It includes an outer liner (1), which includes a limiting platform (6) and a main body (2). The main body (2) has a cavity inside, and an inner liner (3) is provided inside the cavity. The inner liner (3) is limited to the cavity. The inner liner (3) is provided with a threaded hole (7).

2. The composite insert for preventing dislodgement and rotation according to claim 1, characterized in that: The limiting platform (6) is surrounded by anti-slip texture.

3. The composite insert for preventing dislodgement and rotation according to claim 2, characterized in that: The anti-slip texture is vertical stripes (4).

4. The composite insert for preventing dislodgement and rotation according to claim 1, characterized in that: The cavity is polygonal in shape, and the shape of the outer liner (1) matches the shape of the cavity.

5. The composite insert for preventing dislodgement and rotation according to claim 2, characterized in that: The liner (3) has an annular groove on the outside and a limiting ring (8) on the inside of the cavity, which cooperates with the annular groove.

6. The composite insert for preventing dislodgement and rotation according to claim 3, characterized in that: The cross-sectional shape of the lining (3) is I-shaped.

7. The composite insert for preventing dislodgement and rotation according to claim 1, characterized in that: The main body (2) has a polygonal external shape.

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