Injection mold for an automobile air cleaner cover

Abstract

The utility model relates to an injection mold of automobile air cleaner cover, including respectively front and rear arrangement and mutually cooperate initiative module and base module, fixed in initiative module front side's end plate, be located in the backboard of base module rear side, and be located between the top material subassembly of base module and backplate, the front side of base module still inlayed with and initiative module rear side outer wall mutually cooperate core block, the end face of core block is equipped with two upper and lower symmetry distribution's rectangular counterbore, the bottom surface of two rectangular counterbores all is equipped with a rectangular through -hole, still all be equipped with one inner chamber forming module in two rectangular through -holes, inner chamber forming module includes two left and right symmetry setting and all fixed in rectangular through -hole's side forming block, and be located between two side forming blocks and all fixed in rectangular through -hole's main forming block and deputy forming block and respectively left and right distribution, the utility model has simplified the processing step to reduced the processing difficulty and reached the effect that save time and labour, in addition, has also reduced the use cost.

Description

Technical Field

[0001] This utility model relates to an injection mold for an automotive air filter cover. Background Technology

[0002] An air filter cover is a component of a car's air filter. It is usually detachably fixed to the opening of the air filter housing. Its function is to prevent dust and impurities from directly entering the interior of the air filter housing and invading the filter element, while also providing structural support to ensure stable use. To facilitate production and reduce costs, air filter covers are currently mostly made of plastic. Like other plastic parts, the production of air filter covers relies on matching injection molds and corresponding injection molding machines.

[0003] Because the air filter cover has multiple ribs inside to increase strength, the conventional method for molding these ribs in existing injection molds is to set a core block with grooves on the fixed mold core. However, the core block is a single piece, and the processing steps for the grooves are cumbersome, difficult, time-consuming, and labor-intensive. In addition, once the core block is worn, the whole thing needs to be replaced, so the cost of use is high. Therefore, further improvements are needed. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide an injection mold for an automotive air filter cover that simplifies the processing steps to reduce processing difficulty and achieves the effect of saving time and effort, while also reducing the cost of use.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an injection mold for an automotive air filter cover, comprising an active module and a base module respectively arranged front and rear and cooperating with each other, an end plate fixed on the front side of the active module, a back plate disposed on the rear side of the base module, and an ejector assembly disposed between the base module and the back plate, characterized in that: The front side of the base module is also embedded with a core block that cooperates with the rear outer wall of the active module. Two rectangular countersunk holes are opened on the end face of the core block, and a rectangular through hole is opened on the bottom surface of each of the two rectangular countersunk holes. Each of the two rectangular through holes is also provided with an inner cavity forming module, and the outer wall of either side of the inner cavity forming module does not contact the inner wall of either side of the rectangular through hole.

[0006] The inner cavity forming module includes two side forming blocks that are symmetrically arranged on the left and right and fixed in rectangular through holes, and a main forming block and a secondary forming block that are arranged between the two side forming blocks, distributed on the left and right respectively and fixed in rectangular through holes. The inner wall of each of the side molding blocks is in contact with the left outer wall of the main molding block or the right outer wall of the sub-molding block, and the right outer wall of the main molding block is in contact with the left outer wall of the sub-molding block. The inner cavity forming module also includes a sleeve that is laterally inserted into the main forming block and a core rod that is concentrically inserted into the sleeve. The front end of the main forming block has a circular countersunk hole, and the front ends of the sleeve and the core rod both extend forward concentrically into the interior of the circular countersunk hole.

[0007] Preferably, the front end of the main forming block is further provided with two rectangular slots located on the upper and lower sides of the circular countersunk hole, and a core strip is embedded and fixed in each of the two rectangular slots, with the front end of the core strip flush with the front opening of the rectangular slot.

[0008] Preferably, the front left and right edges of the main molding block are provided with a plurality of first notches distributed from top to bottom. Correspondingly, the front edge of each side molding block facing the main molding block or the sub-molding block is provided with the same number of second notches distributed from top to bottom. The front left and right edges of the sub-molding block are also provided with the same number of third notches distributed from top to bottom.

[0009] Preferably, each of the second notches on one of the side molding blocks on the left side is matched with a corresponding first notch on the outer left wall of the main molding block, each of the second notches on one of the side molding blocks on the right side is matched with a corresponding third notch on the outer right wall of the sub-molding block, and each of the first notches on the outer right wall of the main molding block is matched with a corresponding third notch on the outer left wall of the sub-molding block.

[0010] Preferably, a side core-pulling assembly is provided between the active module and the base module. The side core-pulling assembly includes a slider that is movably connected to the front side of the base module to have left and right translation function and is located to the right of the core block, a guide rod that is obliquely inserted into the slider, and two inserts that are fixed on the outer wall of the slider facing the core block and are respectively set up and down.

[0011] Preferably, the upper and lower outer walls of the core strip are respectively in contact with the upper and lower inner walls of the rectangular slot, and there is a certain distance between the left outer wall of the core strip and the left inner wall of the rectangular slot or between the right outer wall of the core strip and the right inner wall of the rectangular slot.

[0012] Compared with the prior art, the advantages of this utility model are as follows: This utility model uses an internal cavity forming module to form multiple ribs. However, unlike the core blocks with an integral structure on the market, the internal cavity forming module is composed of a main forming block, a secondary forming block, and two side forming blocks. The groove structure for forming the ribs is formed by splicing half notches on the main forming block, the secondary forming block, and the two side forming blocks. This simplifies the processing steps, reduces the processing difficulty, and achieves the effect of saving time and effort. In addition, if the internal cavity forming module is worn, only the main forming block, the secondary forming block, or the side forming block needs to be replaced, without the need for a complete replacement, thereby reducing the cost of use. Attached Figure Description

[0013] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings: Figure 1 This is an exploded view of the right front side of this utility model; Figure 2 This is an exploded view of the right front side of the inner cavity forming module of this utility model; Figure 3 This is an exploded view of the left rear side of the inner cavity forming module of this utility model; Figure 4 This is a structural diagram of the right front side of the core block of this utility model; Figure 5 This is a structural diagram of the left rear side of the active module of this utility model; Figure 6 This is a structural diagram of the right front side of the side core-pulling assembly of this utility model. Detailed Implementation

[0014] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0015] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0016] like Figures 1-6 As shown, an injection mold for an automotive air filter cover includes an active module 1 and a base module 2 that are respectively arranged in front of and behind and cooperate with each other, an end plate 3 fixed to the front side of the active module 1, a back plate 4 disposed on the rear side of the base module 2, and an ejector assembly 5 disposed between the base module 2 and the back plate 4. The front side of the base module 2 is also embedded with a core block 6 that cooperates with the rear outer wall of the active module 1. Two rectangular countersunk holes 61 are symmetrically distributed on the end face of the core block 6, and a rectangular through hole 62 is provided on the bottom surface of each of the two rectangular countersunk holes 61. Each of the two rectangular through holes 62 is also provided with an inner cavity forming module 7, and the outer wall of either side of the inner cavity forming module 7 does not contact the inner wall of either side of the rectangular through hole 62. The inner cavity forming module 7 includes two side forming blocks 73 that are symmetrically arranged on the left and right and fixed in the rectangular through hole 62, and a main forming block 71 and a secondary forming block 72 that are arranged between the two side forming blocks 73 and distributed on the left and right respectively and fixed in the rectangular through hole 62. The inner wall of each side molding block 73 is in contact with the left outer wall of the main molding block 71 or the right outer wall of the sub-molding block 72, and the right outer wall of the main molding block 71 is in contact with the left outer wall of the sub-molding block 72. The front left and right sides of the main molding block 71 are provided with a plurality of first notches 713 distributed from top to bottom. Correspondingly, the front side of each side molding block 73 is provided with the same number of second notches 731 distributed from top to bottom on one side edge facing the main molding block 71 or the sub-molding block 72. The front left and right sides of the sub-molding block 72 are also provided with the same number of third notches 721 distributed from top to bottom. The inner cavity forming module 7 also includes a sleeve 75 that is laterally inserted into the main forming block 71 and a core rod 76 that is concentrically inserted into the sleeve 75. The front end of the main forming block 71 has a circular countersunk hole 711, and the front ends of the sleeve 75 and the core rod 76 both extend forward concentrically into the interior of the circular countersunk hole 711.

[0017] The front end of the main forming block 71 is also provided with two rectangular slots 712 located on the upper and lower sides of the circular countersunk hole 711 respectively. A core strip 74 is also embedded and fixed in each of the two rectangular slots 712, and the front end of the core strip 74 is flush with the front opening of the rectangular slot 712.

[0018] The upper and lower outer walls of the core bar 74 are respectively attached to the upper and lower inner walls of the rectangular slot 712. There is a certain distance between the left outer wall of the core bar 74 and the left inner wall of the rectangular slot 712 or between the right outer wall of the core bar 74 and the right inner wall of the rectangular slot 712.

[0019] Each second notch 731 on one of the side molding blocks 73 on the left side is matched with a corresponding first notch 713 on the outer left side wall of the main molding block 71. Each second notch 731 on one of the side molding blocks 73 on the right side is matched with a corresponding third notch 721 on the outer right side wall of the sub-molding block 72. Each first notch 713 on the outer right side wall of the main molding block 71 is matched with a corresponding third notch 721 on the outer left side wall of the sub-molding block 72.

[0020] An arc-shaped rib 714 is formed outward on the right outer wall of the main forming block 71. Correspondingly, an arc-shaped groove 722 is provided on the left outer wall of the auxiliary forming block 72 to cooperate with the arc-shaped rib 714. The arc-shaped rib 714 is embedded in the arc-shaped groove 722.

[0021] A side core-pulling assembly 8 is also provided between the active module 1 and the base module 2. The side core-pulling assembly 8 includes a slider 81 that is movably connected to the front side of the base module 2 to have left and right translation function and is located to the right of the core block 6, a guide rod 82 that is obliquely inserted into the slider 81, and two inserts 83 that are fixed on the outer wall of the slider 81 facing the core block 6 and are respectively set up and down.

[0022] The rear side of the active module 1 has a rectangular cavity 11 that cooperates with the end of the core block 6. The right inner wall of the rectangular cavity 11 has a positioning notch 17 that cooperates with the slider 81. The depth of the positioning notch 17 is greater than the depth of the rectangular cavity 11.

[0023] Each rectangular cavity 11 has a guide notch 13 on the right edge of its bottom surface. Correspondingly, each rectangular countersunk hole 61 has a guide groove 63 between the right edge of its opening and the right edge of the end face of the core block 6. The positions of the two guide notches 13 and the two guide grooves 63 are respectively matched. The two inserts 83 in the side core pulling assembly 8 are respectively movably embedded in the two guide grooves 63.

[0024] A first forming groove 831 is formed on the front edge of the end of each of the two insert blocks 83. Correspondingly, a second forming groove 16 is formed at the inner corner of the bottom surface of each of the two guide notch grooves 13. The two second forming grooves 16 cooperate with the two first forming grooves 831 respectively.

[0025] Two columnar protrusions 14 are formed on the bottom surface of the rectangular cavity 11 in the direction of the core block 6. The outer diameter and position of the two columnar protrusions 14 are respectively matched with the outer diameter and position of the circular countersunk holes 711 on the main forming blocks 71 in the two inner cavity forming modules 7.

[0026] Each columnar protrusion 14 also has a cross-shaped protrusion 15 formed outward from the center of its end.

[0027] On the bottom surface of the rectangular cavity 11, facing the core block 6, there are two symmetrically arranged ribs. The positions of the two ribs are respectively matched with the positions of the openings of the two rectangular countersunk holes 61. The ribs include multiple horizontally arranged ribs 12 distributed from top to bottom.

[0028] Working principle: The active module 1 and the back plate 4 are respectively installed on the action mechanism and the machine body of the injection molding machine. The action mechanism is operated to drive the active module 1 to move backward until the rear outer wall of the active module 1 and the front outer wall of the base module 2 are joined together (existing technology).

[0029] At this time, the end of the core block 6 is embedded in the rectangular cavity 11 on the active module 1 until the end face of the core block 6 is in contact with the bottom surface of the rectangular cavity 11, and the openings of the two guide notches 13 are respectively matched with the openings of the two guide grooves 63; during the movement, the active module 1 will also drive the guide rod 82 in the side core pulling assembly 8 to move synchronously, thereby forcing the slider 81 to move towards the core block 6, thereby driving the two insert blocks 83 to move to the left along the two guide grooves 63, until the openings of the first forming grooves 831 on the two insert blocks 83 are respectively matched with the openings of the two second forming grooves 16; at this time, the multiple protrusions 12 in each protrusion assembly are located inside the opening of a corresponding rectangular countersunk hole 61, and the two columnar protrusions 14 are respectively concentrically inserted into the circular countersunk holes 711 on the main forming blocks 71 in the two inner cavity forming modules 7.

[0030] Subsequently, the molten material enters the interior of each rectangular countersunk hole 61 and between each rectangular through hole 62 and a corresponding inner cavity forming module 7 through the gate provided in the end plate 3 and the runner provided in the active module 1. After cooling, two air filter covers are formed (existing technology).

[0031] Molten material is also contained between each second notch 731 and a first notch 713 or a third notch 721, between each first notch 713 and a third notch 721, and between each core strip 74 and the corresponding inner wall of the rectangular slot 712. After the molten material cools, it will form multiple ribs inside the air filter cover. A concave hole will be formed between each columnar boss 14 and the circular countersunk hole 711 on the main forming block 71 in the corresponding inner cavity forming module 7.

[0032] Then, the active module 1 is driven forward by the action mechanism to move away from the base module 2. Similarly, the rectangular cavity 11 is driven to separate from the end of the core block 6. At the same time, the guide rod 82 is driven to move synchronously to force the slider 81 and the two insert blocks 83 to move back to their original positions. Finally, the two air filter covers after forming are pushed forward by the ejector assembly 5 (existing technology).

[0033] This invention utilizes an inner cavity forming module 7 to form multiple ribs. However, unlike the integral core blocks on the market, the inner cavity forming module 7 is composed of a main forming block 71, a secondary forming block 72, and two side forming blocks 73. The groove structure for forming the ribs is formed by combining half notches on the main forming block 71, the secondary forming block 72, and the two side forming blocks 73. This simplifies the processing steps, reduces processing difficulty, and achieves time and labor saving. Furthermore, if the inner cavity forming module 7 is worn, only the main forming block 71, the secondary forming block 72, or the side forming block 73 needs to be replaced, without the need for a complete replacement, thereby reducing the cost of use.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An injection mold for an automotive air filter cover, comprising an active module and a base module respectively arranged front to rear and cooperating with each other, an end plate fixed to the front side of the active module, a back plate disposed on the rear side of the base module, and an ejector assembly disposed between the base module and the back plate, characterized in that: The front side of the base module is also embedded with a core block that cooperates with the rear outer wall of the active module. Two rectangular countersunk holes are opened on the end face of the core block, and a rectangular through hole is opened on the bottom surface of each of the two rectangular countersunk holes. Each of the two rectangular through holes is also provided with an inner cavity forming module, and the outer wall of either side of the inner cavity forming module does not contact the inner wall of either side of the rectangular through hole; The inner cavity forming module includes two side forming blocks that are symmetrically arranged on the left and right and fixed in rectangular through holes, and a main forming block and a secondary forming block that are arranged between the two side forming blocks, distributed on the left and right respectively and fixed in rectangular through holes. The inner wall of each of the side molding blocks is in contact with the left outer wall of the main molding block or the right outer wall of the sub-molding block, and the right outer wall of the main molding block is in contact with the left outer wall of the sub-molding block. The inner cavity forming module also includes a sleeve that is laterally inserted into the main forming block and a core rod that is concentrically inserted into the sleeve. The front end of the main forming block has a circular countersunk hole, and the front ends of the sleeve and the core rod both extend forward concentrically into the interior of the circular countersunk hole.

2. The injection mold for an automotive air filter cover according to claim 1, characterized in that, The front end of the main forming block is also provided with two rectangular slots located on the upper and lower sides of the circular countersunk hole, respectively. A core strip is also embedded and fixed in each of the two rectangular slots, and the front end of the core strip is flush with the front opening of the rectangular slot.

3. The injection mold for an automotive air filter cover according to claim 1, characterized in that, The main molding block has multiple first notches distributed from top to bottom on both the left and right edges of its front end. Correspondingly, each side molding block has the same number of second notches distributed from top to bottom on one side edge of its front end facing the main molding block or the sub-molding block. The sub-molding block also has the same number of third notches distributed from top to bottom on both the left and right edges of its front end.

4. The injection mold for an automobile air cleaner cover according to claim 3, wherein Each second notch on one of the side molding blocks on the left side is matched with a corresponding first notch on the outer left wall of the main molding block. Each second notch on one of the side molding blocks on the right side is matched with a corresponding third notch on the outer right wall of the sub-molding block. Each first notch on the outer right wall of the main molding block is matched with a corresponding third notch on the outer left wall of the sub-molding block.

5. The injection mold for an automotive air filter cover according to claim 1, characterized in that, A side core-pulling assembly is also provided between the active module and the base module. The side core-pulling assembly includes a slider that is movably connected to the front side of the base module to have left and right translation function and is located to the right of the core block, a guide rod that is obliquely inserted into the slider, and two inserts that are fixed on the outer wall of the slider facing the core block and are respectively set up and down.

6. The injection mold for an automotive air filter cover according to claim 2, characterized in that, The upper and lower outer walls of the core strip are respectively in contact with the upper and lower inner walls of the rectangular slot. There is a certain distance between the left outer wall of the core strip and the left inner wall of the rectangular slot, or between the right outer wall of the core strip and the right inner wall of the rectangular slot.

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