Automobile interior part easy-to-demold injection mold

Abstract

The utility model discloses an automobile interior part easy stripping injection mold, include: automobile interior part injection male die, automobile interior part injection male die one end splicing is provided with automobile interior part injection female die, the inside one end of automobile interior part injection male die limit slip is equipped with stripping top plate, automobile interior part injection male die contains injection male die outer mould body, automobile interior part injection female die contains injection female die outer mould body, stripping top plate contains stripping thin top plate, the utility model discloses a cylinder makes stripping top plate to the direction of being close to automobile interior part injection female die and ejects, at this time, stripping thin top plate first ejects thin plate nest groove and ejects a part of interior part, at this time, because rectangular sealing washer is located in the close adhesion of thick top plate side and thick plate sliding inner chamber side, so can extrude the internal air between interior part male module and interior part, so can be more fast and convenient to stripping injection part through air pressure and stripping thin top plate.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically an easy-to-demold injection mold for automotive interior parts. Background Technology

[0002] Automotive interior parts refer to the decorative and functional components inside a car. They not only affect the car's aesthetics but also the comfort and safety of the ride. There are many different types of automotive interior parts. Among them, interior parts made of plastic usually need to be injection molded. However, the existing easy-to-demold injection molds for automotive interior parts are relatively inconvenient to demold because the injection molded part and the punch are closely attached.

[0003] As disclosed in Chinese Patent Publication No. CN109849268A, an easy-to-demold injection mold includes a lower mold base extending upwards around its perimeter. Four side mold plates are positioned above the lower mold base, their left and right ends connected to form a square space. An embedded part with a regular hexagonal cross-section is placed within this square space. Adjacent side mold plates are connected by bolts. An upper mold base is positioned above the side mold plates, forming a closed space between the lower mold base, side mold plates, and upper mold base. The advantages of this invention are: novel structure, ingenious design, and the ability to disassemble the upper mold base, side mold plates, and lower mold base for convenient demolding, saving time and effort. Universal bolts are used for installation between the upper mold base, side mold plates, and lower mold base, making it convenient and fast. However, demolding is achieved by disassembling the mold, making the demolding method relatively complex. Utility Model Content

[0004] The purpose of this utility model is to provide an easy-to-demold injection mold for automotive interior parts in order to solve the existing problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-demold injection mold for automotive interior parts, comprising: an injection punch for automotive interior parts, an injection die for automotive interior parts being spliced ​​to one end of the injection punch, a demolding top plate being slidably limited to one end inside the injection punch, the injection punch for automotive interior parts including an outer mold body, the injection die for automotive interior parts including an outer mold body, and the demolding top plate including a thin demolding top plate.

[0006] As a further embodiment of this utility model: an interior part protruding module is fixedly provided at the middle of one end of the outer mold body of the injection molding punch, and an interior part concave mold groove is opened at the middle of one end of the outer mold body of the injection molding die, and the interior part protruding module is adapted to the interior part concave mold groove.

[0007] As a further embodiment of this utility model: a thin plate groove is provided at one end of the inner side of the interior part protruding module, a thick plate sliding cavity is provided at one end of the inner side of the thin plate groove, a middle connecting rod is fixedly provided at one end of the demolding thin top plate, a demolding thick top plate is fixedly provided at one end of the middle connecting rod, and the demolding thick top plate is slidably disposed inside the thick plate sliding cavity.

[0008] As a further embodiment of this utility model: an air inlet hole is provided through one end of the inner side of the sliding inner cavity of the thick plate, and a one-way air inlet valve is embedded through one end of the demolding thick top plate. A rectangular sealing gasket is fixedly embedded on one side of the one-way air inlet valve. Two sets of the inner cavity air inlet hole and the one-way air inlet valve are provided.

[0009] As a further embodiment of this utility model: a first ejector pin sliding hole is provided at the other end of the inner side of the sliding cavity of the thick plate; an elastic element mounting cavity is provided at one end of the first ejector pin sliding hole; a second ejector pin sliding hole is provided at one end of the elastic element mounting cavity; a demolding ejector pin is fixedly provided at the middle of one end of the demolding thick plate; a limiting ring plate is fixedly provided at the side of the demolding ejector pin near the middle; a reset elastic element is sleeved on the outer side of the demolding ejector pin near the limiting ring plate; and a lateral connecting rod is fixedly provided between the demolding thin plate and the demolding thick plate.

[0010] As a further embodiment of this utility model: a mold positioning slide rod is fixedly provided on one side of the outer mold body of the injection punch, and a mold positioning slide hole is opened through one side of the outer mold body of the injection die. The number of mold positioning slide rods and mold positioning slide holes are both provided in four sets, and the mold positioning slide rods can slide inside the mold positioning slide holes.

[0011] As a further embodiment of this utility model: an injection head groove is provided in the middle of the other end of the outer mold body of the injection mold cavity, and an injection feed hole is provided in the middle of one end of the inner side of the interior mold cavity, and the injection head groove and the injection feed hole are connected through each other.

[0012] As a further embodiment of this utility model: the limiting ring plate and the reset elastic element are both located inside the inner cavity of the elastic element mounting cavity. The two ends of the reset elastic element are respectively limited by the limiting ring plate and the inner wall of one side of the inner cavity of the elastic element mounting cavity. The number of the lateral connecting rods is four sets.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, a cylinder pushes the demolding top plate toward the injection mold of the automotive interior parts. At this time, the thin demolding top plate first pushes out the thin plate groove and a part of the interior parts. Since the rectangular sealing gasket is located on the side of the thick demolding top plate and is in close contact with the side of the sliding inner cavity of the thick plate, the internal air can be squeezed into the space between the interior parts protrusion and the interior parts. Thus, the injection molded parts can be demolded more quickly and conveniently by means of air pressure and the thin demolding top plate.

[0015] In this invention, a one-way air inlet valve is provided to allow air to enter from the thick demolding top plate to the thin demolding top plate. This prevents internal air from flowing backward when the demolding top plate slides during demolding. When the demolding top plate returns to its original position after demolding, air can enter through the air inlet hole in the inner cavity and then enter the sliding inner cavity of the thick plate between the thick demolding top plate and the thin demolding top plate through the one-way air inlet valve. In this way, repeated demolding can be achieved efficiently. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an easy-to-demold injection mold for automotive interior parts according to the present invention;

[0017] Figure 2 This is a schematic diagram of the installation structure of the punch and the demolding top plate in an easy-to-demold injection mold for automotive interior parts, as described in this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the injection punch for automotive interior parts in an easy-to-demold injection mold for automotive interior parts, as described in this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the injection mold for automotive interior parts in an easy-to-demold injection mold for automotive interior parts, as described in this utility model.

[0020] Figure 5 This is a schematic diagram of the demolding top plate in an easy-to-demold injection mold for automotive interior parts, as described in this utility model.

[0021] In the diagram: 1. Injection mold for automotive interior parts; 2. Injection mold for automotive interior parts; 3. Demolding top plate; 10. Outer mold body of injection mold; 11. Interior part convex part; 12. Thin plate groove; 13. Thick plate sliding cavity; 14. Inner cavity air inlet; 15. Ejector pin sliding hole one; 16. Elastic component mounting cavity; 17. Ejector pin sliding hole two; 18. Mold positioning slide bar; 20. Outer mold body of injection mold; 21. Interior part mold cavity groove; 22. Injection head groove; 23. Injection feed hole; 24. Mold positioning slide hole; 30. Demolding thin top plate; 31. Intermediate connecting main rod; 32. Demolding thick top plate; 33. One-way air inlet valve; 34. Rectangular sealing gasket; 35. Demolding ejector pin; 36. Limiting ring plate; 37. Reset elastic component; 38. Side connecting auxiliary rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0024] Reference Figures 1 to 5 In this embodiment of the present invention, an easy-to-demold injection mold for automotive interior parts includes: an automotive interior part injection punch 1, an automotive interior part injection die 2 spliced ​​at one end of the automotive interior part injection punch 1, a demolding top plate 3 that is limited and slidably provided at one end inside the automotive interior part injection punch 1, the automotive interior part injection punch 1 including an injection punch outer mold body 10, the automotive interior part injection die 2 including an injection die outer mold body 20, and the demolding top plate 3 including a demolding thin top plate 30.

[0025] An interior part protrusion module 11 is fixedly provided at one end of the outer mold body 10 of the injection mold punch, and an interior part cavity groove 21 is opened at one end of the outer mold body 20 of the injection mold cavity. The interior part protrusion module 11 is adapted to the interior part cavity groove 21.

[0026] The interior trim protruding module 11 has a thin plate groove 12 at one end of its inner side, and a thick plate sliding cavity 13 at one end of its inner side. A middle connecting rod 31 is fixedly installed at one end of the demolding thin top plate 30, and a demolding thick top plate 32 is fixedly installed at one end of the middle connecting rod 31. The demolding thick top plate 32 is slidably installed inside the thick plate sliding cavity 13.

[0027] An air inlet hole 14 is provided through one end of the inner side of the sliding inner cavity 13 of the thick plate. A one-way air inlet valve 33 is embedded through one end of the demolding thick top plate 32. A rectangular sealing gasket 34 is fixedly embedded on one side of the one-way air inlet valve 33. There are two sets of both the air inlet hole 14 and the one-way air inlet valve 33.

[0028] A push rod sliding hole 15 is provided at the other end of the inner side of the thick plate sliding cavity 13. An elastic element mounting cavity 16 is provided at one end of the push rod sliding hole 15. A push rod sliding hole 17 is provided at one end of the elastic element mounting cavity 16. A demolding push rod 35 is fixedly provided at the middle of one end of the demolding thick plate 32. A limiting ring plate 36 is fixedly provided at the side of the demolding push rod 35 near the middle. A reset elastic element 37 is sleeved on the outside of the demolding push rod 35 near the limiting ring plate 36. A side connecting rod 38 is fixedly provided between the demolding thin plate 30 and the demolding thick plate 32.

[0029] A mold positioning slide rod 18 is fixedly installed on one side of the injection punch outer mold body 10, and a mold positioning slide hole 24 is opened through one side of the injection die outer mold body 20. There are four sets of mold positioning slide rods 18 and mold positioning slide holes 24. The mold positioning slide rod 18 can slide inside the mold positioning slide hole 24.

[0030] An injection head groove 22 is provided at the middle of the other end of the outer mold body 20 of the injection mold cavity, and an injection feed hole 23 is provided at the middle of one end of the inner side of the interior mold cavity 21. The injection head groove 22 and the injection feed hole 23 are connected through each other.

[0031] The limiting ring plate 36 and the reset elastic element 37 are both located inside the elastic element mounting cavity 16. The two ends of the reset elastic element 37 are limited by the limiting ring plate 36 and the inner wall of one side of the elastic element mounting cavity 16, respectively. There are four sets of side connecting rods 38.

[0032] Using the above solution: the ejector plate 3 is pushed out towards the injection mold 2 of the automotive interior part by a cylinder. At this time, the thin ejector plate 30 first pushes out the thin plate groove 12 and a part of the interior part. Since the rectangular sealing gasket 34 is located on the side of the thick ejector plate 32 and is in close contact with the side of the sliding inner cavity 13 of the thick plate, the internal air can be squeezed into the space between the interior part protrusion 11 and the interior part. Thus, the injection molding can be completed more quickly and conveniently by air pressure and the thin ejector plate 30. The part is demolded, and through the one-way air inlet valve 33 which allows air to enter from the demolding thick top plate 32 to the demolding thin top plate 30, the internal air can be prevented from flowing backward when the demolding top plate 3 slides during demolding. When the demolding top plate 3 finishes demolding and slides back, air can be allowed to enter through the inner cavity air inlet hole 14 and then enter the thick plate sliding inner cavity 13 between the demolding thick top plate 32 and the demolding thin top plate 30 through the one-way air inlet valve 33. In this way, repeated demolding can be achieved efficiently.

[0033] The working principle of this utility model is as follows: First, by closing the automotive interior part injection mold 1 and the automotive interior part injection mold 2, the demolding top plate 3 is pulled away from the automotive interior part injection mold 2, causing the thin demolding top plate 30 to embed into the thin plate groove 12, allowing injection molding to proceed. After injection molding, a cylinder pushes the demolding top plate 3 towards the automotive interior part injection mold 2. At this time, the thin demolding top plate 30 first ejects from the thin plate groove 12 and ejects a portion of the interior part. Since the rectangular sealing gasket 34 is located on the side of the thick demolding top plate 32 and tightly fits against the side of the thick plate sliding inner cavity 13, the internal... Air is forced between the interior trim protrusion module 11 and the interior trim, thus enabling faster and more convenient demolding of the injection molded part through air pressure and the thin ejector plate 30. Furthermore, the one-way air inlet valve 33, which allows air to enter from the thick ejector plate 32 towards the thin ejector plate 30, prevents internal air from flowing backward when the ejector plate 3 slides during demolding. When the ejector plate 3 finishes demolding and slides back to its original position, air can enter through the inner cavity air inlet hole 14 and then through the one-way air inlet valve 33 into the thick plate sliding inner cavity 13 between the thick ejector plate 32 and the thin ejector plate 30. This allows for efficient and repeated demolding operations.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An easy-release injection mold for automotive interior parts, characterized in that, include: An injection punch (1) for automotive interior parts is provided at one end of an injection die (2) for automotive interior parts. A demolding top plate (3) is provided at one end of the injection punch (1) for limiting the movement of the injection punch. The injection punch (1) for automotive interior parts includes an outer mold body (10) for the injection punch. The injection die (2) for automotive interior parts includes an outer mold body (20) for the injection die. The demolding top plate (3) includes a thin demolding top plate (30).

2. The easy-release injection mold for automotive interior parts according to claim 1, characterized in that, The injection molding punch outer mold body (10) has an interior part protrusion module (11) fixedly provided at one end of the middle, and the injection molding die outer mold body (20) has an interior part die groove (21) opened at one end of the middle, and the interior part protrusion module (11) is adapted to the interior part die groove (21).

3. The easy-release injection mold for automotive interior parts according to claim 2, characterized in that, The interior trim protrusion module (11) has a thin plate groove (12) at one end of its inner side, and a thick plate sliding cavity (13) at one end of its inner side. The demolding thin top plate (30) has a middle connecting rod (31) fixedly installed at one end, and a demolding thick top plate (32) fixedly installed at one end of its middle connecting rod (31). The demolding thick top plate (32) is slidably installed inside the thick plate sliding cavity (13).

4. The easy-release injection mold for automotive interior parts according to claim 3, characterized in that, The inner side of the thick plate sliding inner cavity (13) is provided with an inner cavity air inlet hole (14), and the inner side of the demolding thick top plate (32) is provided with a one-way air inlet valve (33). A rectangular sealing gasket (34) is fixedly embedded on the side of the one-way air inlet valve (33). The number of the inner cavity air inlet hole (14) and the one-way air inlet valve (33) are both provided in two sets.

5. The easy-release injection mold for automotive interior parts according to claim 4, characterized in that, The thick plate sliding cavity (13) has a push rod sliding hole 1 (15) at one end, the push rod sliding hole 1 (15) has an elastic element mounting cavity (16) at one end, the elastic element mounting cavity (16) has a push rod sliding hole 2 (17) at one end, the demolding thick plate (32) has a demolding push rod (35) fixedly installed in the middle of one end, the demolding push rod (35) has a limiting ring plate (36) fixedly installed on the side near the middle end, the demolding push rod (35) has a reset elastic element (37) sleeved on the outside of the demolding push rod (35) near the limiting ring plate (36), and a side connecting rod (38) is fixedly installed between the demolding thin plate (30) and the demolding thick plate (32).

6. The easy-release injection mold for automotive interior parts according to claim 5, characterized in that, A mold positioning slide rod (18) is fixedly provided on one side of the injection punch outer mold body (10), and a mold positioning slide hole (24) is provided through one side of the injection die outer mold body (20). There are four sets of mold positioning slide rods (18) and mold positioning slide holes (24). The mold positioning slide rod (18) can slide inside the mold positioning slide hole (24).

7. The easy-release injection mold for automotive interior parts according to claim 6, characterized in that, The injection head groove (22) is provided at the middle of the other end of the outer mold body (20) of the injection mold cavity, and the injection feed hole (23) is provided at the middle of one end of the inner side of the interior mold cavity (21). The injection head groove (22) and the injection feed hole (23) are connected through each other.

8. The easy-release injection mold for automotive interior parts according to claim 7, characterized in that, The limiting ring plate (36) and the reset elastic element (37) are both located inside the elastic element mounting cavity (16). The two ends of the reset elastic element (37) are limited by the limiting ring plate (36) and the inner wall of one side of the elastic element mounting cavity (16), respectively. The number of the side connecting rods (38) is four.

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