A blow molding die for manufacturing air filter components and a method for manufacturing air filter components.

Abstract

This invention discloses a blow molding die for manufacturing air filter components and a method for manufacturing air filter components using the blow molding die. The blow molding die includes a moving die and a fixed die. The moving die and the fixed die are combined to form a cavity for blow molding air filter components. The cavity includes a first cavity on the moving die and a second cavity on the fixed die. The first cavity and the second cavity are respectively provided with a first lug cavity and a second lug cavity for forming mounting lugs of the air filter components. The first lug cavity is provided with a protruding core for forming lug holes. The moving die and the fixed die are combined so that the end of the protruding core abuts against the inner wall of the second lug cavity. The protruding core is a whole that spans between the fixed die and the moving die. In this way, the parting surface when forming the lug hole will be located at the edge of the lug hole. When the air filter component is manufactured, the flash on the lug hole exists at the edge, which is more convenient to process and remove, and can eliminate the risk of changes in the size and shape of the lug hole caused by processing and removing flash in the past.

Description

Technical Field

[0001] This invention relates to the field of molds, specifically a blow molding mold for manufacturing air filter components and a method for manufacturing air filter components using the blow molding mold. Background Technology

[0002] Air filters are commonly used in the automotive industry, primarily filtering impurities from the air through an internal filter element to supply power to the engine for combustion. Air filters also include components such as resonator boxes or resonators, manufactured using a blow molding process. During blow molding, the parting line often results in burrs on the manufactured air filter components. These burrs are often located in the middle of the component, especially in the lug holes where the mounting lugs are installed. Each time burrs are removed, they must be manually processed individually. Since air filter components are installed using lugs, removing burrs from the lug holes requires particularly careful operation; otherwise, the diameter and shape of the lug holes can easily change, affecting the installation of the air filter component and leading to product quality issues. Such operations significantly reduce the manufacturing efficiency of air filter components. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a blow molding die for manufacturing air filter components and a method for manufacturing air filter components using the blow molding die.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A blow molding die for manufacturing air filter components includes a moving mold and a fixed mold. The moving mold and the fixed mold are combined to form a cavity for blow molding the air filter components. The cavity includes a first cavity located on the moving mold and a second cavity located on the fixed mold. The first cavity and the second cavity are respectively provided with a first lug cavity and a second lug cavity for forming mounting lugs of the air filter components. The first lug cavity is provided with a protruding core for forming lug holes. The moving mold and the fixed mold are combined such that the end of the protruding core on the first lug cavity abuts against the inner wall of the second lug cavity.

[0006] The edges of the first cavity and the second cavity protrude to form a joint perimeter.

[0007] The convex core includes a cylindrical portion forming a circular hole for the lug hole and an extension portion forming the opening of the lug hole, the extension portion extending from the cylindrical portion to the side wall of the first lug cavity for engagement.

[0008] A method for manufacturing an air filter component using the aforementioned blow molding die involves placing a blank between a moving mold and a fixed mold. The moving mold then moves closer to the fixed mold to form a cavity. A protruding core in a first lug cavity on the moving mold is inserted into a second lug cavity on the fixed mold, with the end of the protruding core abutting against the inner wall of the second lug cavity. After the moving mold and fixed mold are combined, the blank is clamped in the cavity. An air needle is inserted into the cavity to blow air into the blank, causing the blank to expand and adhere to the inner wall of the cavity, forming the air filter component body. During the movement and assembly of the moving mold and fixed mold, a mounting lug is formed by clamping the blank through the first and second lug cavities. The protruding core passes through the blank to form a lug hole, ultimately forming a mounting lug with a lug hole. The flash formed during the creation of the lug hole is extruded by the protruding core to the edge of the mounting lug.

[0009] The beneficial effects of the present invention are as follows: The present invention forms the lug hole for mounting lug by using an integral convex core spanning between the fixed mold and the moving mold. In this way, the parting surface when forming the lug hole will be located at the edge of the lug hole. When the air filter component is manufactured, the flash on the lug hole exists at the edge, which is convenient for processing and removal, and can eliminate the risk of changes in the size and shape of the lug hole caused by processing and removing flash in the past. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the structure of the present invention;

[0012] Figure 2 This is a schematic diagram of the disassembled parts of the present invention;

[0013] Figure 3 yes Figure 2 Enlarged view of point A in the image;

[0014] Figure 4 This is a schematic diagram of the fixed mold structure of the present invention. Detailed Implementation

[0015] Reference Figures 1 to 4In one embodiment, a blow molding die for manufacturing air filter components includes a moving mold 1 and a fixed mold 2. The moving mold 1 and fixed mold 2, when combined, form a cavity for blow molding the air filter component. The cavity includes a first cavity 31 located on the moving mold 1 and a second cavity 32 located on the fixed mold 2. The first cavity 31 and the second cavity 32 are respectively provided with a first lug cavity 311 and a second lug cavity 321. The first lug cavity 311 and the second lug cavity 321, when combined, form the lug cavity for mounting lug 101 of the air filter component. The mounting lug 101 is machined with a lug hole 102, and the first lug cavity 311 contains a protruding core 33 forming the lug hole 102. After the moving mold 1 and the fixed mold 2 are combined, the end of the protruding core 33 on the first lug cavity 311 abuts against the inner wall of the second lug cavity 321. Of course, the protruding core 33 can also be arranged in the second lug cavity 321 on the fixed mold 2. When the moving mold 1 and the fixed mold 2 are combined, the end of the protruding core 33 abuts against the inner wall of the first lug cavity 311. This is a simple and conventional positional change based on this embodiment, which can also achieve the technical purpose of the present invention and should also fall within the protection scope of the present invention.

[0016] Since there are various structures for the lug hole 102 on the mounting lug 101, it can be manufactured by adjusting the structure of the protruding core 33. In this embodiment, the manufactured lug hole 102 is a round hole with a side opening. Therefore, the protruding core 33 includes a cylindrical portion 331 that forms the round hole of the lug hole 102 and an extension portion 332 that forms the opening of the lug hole 102. The extension portion 332 extends from the cylindrical portion 331 to the side wall of the first lug cavity 311 for engagement.

[0017] As a preferred embodiment, the edges of the first cavity 31 and the second cavity 32 protrude to form a joint perimeter 5; on the one hand, this facilitates the docking of the first cavity 31 and the second cavity 32, and on the other hand, it can save on mold manufacturing materials.

[0018] This invention also protects a method for manufacturing an air filter component using the above-mentioned blow molding die. The blank is placed between the moving mold 1 and the fixed mold 2. Subsequently, the moving mold 1 moves closer to the fixed mold 2 and clamps the blank in the cavity. At this time, the first lug cavity 311 and the second lug cavity 321 clamp part of the blank to form mounting lugs 101. The protruding core 33 in the first lug cavity 311 on the moving mold 1 is inserted into the second lug cavity 321 on the fixed mold 2 and passes through the blank to form a lug hole 102. The end of the protruding core 33 abuts against the inner wall of the second lug cavity 321, and the flash formed by making the lug hole is extruded to the edge of the lug hole. At the same time, an air needle is inserted into the cavity and blows air into the blank, so that the blank expands and adheres to the inner wall of the cavity to form the body of the air filter component.

[0019] The present invention forms the lug hole 102 for mounting lug 101 by an integral protruding core 33 spanning between the fixed mold 2 and the moving mold 1. The protruding core 33 is inserted from the first lug cavity 311 into the second lug cavity 321 and the end of the protruding core 33 abuts against the inner wall of the second lug cavity 321. In this way, the parting surface when forming the lug hole 102 will be located at the edge of the mounting lug 101. After the air filter component is manufactured, the flash on the lug hole 102 exists at the edge. The flash can be easily removed by processing and grinding the edge of the lug hole 102, and the risk of the lug hole size changing due to processing and removing the flash can be eliminated.

Claims

1. A blow mould for manufacturing an air filter component, comprising a movable mould half (1) and a stationary mould half (2), which, in combination, form a mould cavity for blow moulding an air filter component, characterised in that: The cavity includes a first cavity (31) on the moving mold (1) and a second cavity (32) on the fixed mold (2). The first cavity (31) and the second cavity (32) are respectively provided with a first lug cavity (311) and a second lug cavity (321) for forming mounting lugs (101) of the air filter component. The first lug cavity (311) is provided with a protruding core (33) for forming lug holes (102). The moving mold (1) and the fixed mold (2) are combined so that the end of the protruding core (33) of the first lug cavity (311) abuts against the inner wall of the second lug cavity (321).

2. The blow mold of claim 1, wherein: The edges of the first cavity (31) and the second cavity (32) protrude to form a joint perimeter (5).

3. The blow mold of claim 1, wherein: The protruding core (33) includes a cylindrical portion (331) forming a circular hole of the lug hole (102) and an extension portion (332) forming an opening of the lug hole (102), the extension portion (332) extending from the cylindrical portion (331) to engage with the sidewall of the first lug cavity (311).

4. A method of manufacturing an air cleaner element using the blow mould defined in any one of claims 1 to 3, characterised by: The blank is placed between the moving mold (1) and the fixed mold (2). Then, the moving mold (1) moves closer to the fixed mold (2) and clamps the blank in the cavity. At this time, the first lug cavity (311) and the second lug cavity (321) clamp part of the blank to form the mounting lug (101). The protruding core (33) in the first lug cavity (311) on the moving mold (1) is inserted into the second lug cavity (321) on the fixed mold (2) and passes through the blank to form the lug hole (102). The end of the protruding core (33) abuts against the inner wall of the second lug cavity (321) and extrudes the flash formed by making the lug hole to the edge of the lug hole. At the same time, the air needle is inserted into the cavity to blow air into the blank, so that the blank expands and adheres to the inner wall of the cavity to form the air filter component body.

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