Manufacturing mold for dust cover of automobile air bag seat

Abstract

The utility model relates to injection mold technical field discloses an automobile air bag seat dust cover manufacturing mould, including die blank A board, die blank B board and die blank bottom plate, die blank A board is connected above die blank B board through guide pillar, die blank B board fixedly connected at the top of die blank bottom plate, three constitute mould main part structure, and the mould realizes locking fixed through fastening screw and extrusion block, the die core is set in the cavity area between die blank A board and die blank B board, is used for forming dust cover appearance, the top of die blank A board is provided with the syringe, is used for injecting plastic raw materials, in the utility model, through many groups cooperation's inclined top, sliding block and inside and outside stripping mechanism, effectively solved the forming and stripping problem of dust cover complex structure. Meanwhile, adopt closed loop type water cooling channel, ensure that cooling system is high -efficient even, has shortened the cooling time, has promoted injection efficiency and product's dimensional stability.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a mold for manufacturing dust covers for automotive airbag seats. Background Technology

[0002] With the continuous improvement of automotive safety features, side airbag systems in seats have gradually become standard equipment. To ensure the stable operation and clean functioning of the airbag components, a dust cover is usually installed inside the seat to prevent dust, moisture, and other impurities from entering the airbag module. However, dust covers are typically complex in structure, with multiple clips, mounting holes, and beveled overhangs, making them difficult to mold in one go and demold smoothly using traditional molds.

[0003] Existing molds for manufacturing such dust covers still have shortcomings in the following aspects: First, traditional molds mostly use unidirectional demolding mechanisms, which cannot adapt to complex products with structures such as undercuts and side holes, and are prone to product deformation or mold jamming; Second, the conventional cooling water channel layout is unreasonable, resulting in long molding cycles and uneven product shrinkage, which affects product quality and production efficiency; Finally, some mold structures are not easy to disassemble and replace, especially demolding components such as internal sliders and inclined ejectors, resulting in high maintenance costs.

[0004] To address the above issues, a manufacturing mold for automotive airbag seat dust covers is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a manufacturing mold for an automotive airbag seat dust cover, aiming to solve the problem that an existing automotive airbag seat dust cover manufacturing mold is difficult to adapt to demolding of complex structures.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a mold for manufacturing dust covers for automobile airbag seats, comprising a mold blank A plate, a mold blank B plate and a mold blank base plate, wherein the mold blank A plate is connected above the mold blank B plate by a guide post, and the mold blank B plate is fixedly connected to the top of the mold blank base plate, the three of which constitute the main structure of the mold, and the mold is locked and fixed by fastening screws and clamping blocks;

[0007] The mold core is located in the cavity area between the mold blank A plate and the mold blank B plate, and is used to form the shape of the dust cover;

[0008] The top of the mold plate A is provided with a nozzle for injecting plastic raw materials;

[0009] The lower end of the guide post is inserted into the mold groove to achieve the positioning and guidance of the mold;

[0010] Multiple mold feet are provided below the mold base plate for mounting and support.

[0011] As a further description of the above technical solution:

[0012] The mold core has an insertion hole in the center, which is used in conjunction with the inclined ejector to demold the dust cover inverted structure. The inclined ejector is driven by the lower hydraulic cylinder two, which is installed on the top of the hydraulic cylinder seat two below the mold base plate. A seat dust cover is provided on the outer side of the inclined ejector.

[0013] As a further description of the above technical solution:

[0014] A hydraulic cylinder is installed on each of the left and right sides of the mold blank B plate, and a hydraulic cylinder is installed on the front side of the mold blank B plate. The hydraulic cylinder is fixed on the hydraulic cylinder seat 2, and the hydraulic cylinder is fixed on the hydraulic cylinder seat 3. The output end of the hydraulic cylinder is connected to the outer slider. The outer slider is used to complete the demolding of the structure on the side of the cavity. Wear-resistant blocks are provided in its sliding path, and the wear-resistant blocks are in contact with the mold core.

[0015] As a further description of the above technical solution:

[0016] The mold plate B has a cooling water channel inside. One end of the cooling water channel is connected to an external water source through a water nozzle connector, and the other end of the cooling water channel is connected to a water collection block through a water pipe. The water collection block has multiple independent water outlets to form a closed-loop cooling circuit.

[0017] As a further description of the above technical solution:

[0018] The mold base plate is provided with an ejector plate support, on which multiple ejector pin assemblies are connected. The ejector pin assemblies achieve automatic reset through an elastic structure.

[0019] As a further description of the above technical solution:

[0020] The mold core is provided with inner sliders on both sides and guided into the cavity. The inner sliders are slidably connected to the inclined top.

[0021] As a further description of the above technical solution:

[0022] It also includes a slider, which is slidably installed in conjunction with the mold square iron via a guide rail, and the mold square iron is fixed on both sides of the mold plate B.

[0023] As a further description of the above technical solution:

[0024] The nozzle is provided with a tapered mating hole, the guide post is a replaceable structure, and the guide post, mold plate A and mold plate B are connected by positioning hole screws.

[0025] As a further description of the above technical solution:

[0026] The front side of the mold plate A has symmetrically arranged input and output terminals.

[0027] This utility model has the following beneficial effects:

[0028] 1. This utility model employs multiple sets of coordinated inclined ejectors, sliders, and internal and external demolding mechanisms, which effectively solves the molding and demolding problems of complex structures such as undercuts, side holes, and reinforcing ribs in dust covers. Through coordinated demolding in different directions, it avoids problems such as tearing and jamming that occur in traditional molds due to structural limitations, significantly improving product integrity and mold lifespan.

[0029] 2. In this invention, a closed-loop water-cooling channel is provided inside the mold, and the cooling system covers key areas of the molding region. The water channels are evenly distributed and have high heat exchange efficiency. This design can quickly reduce the mold temperature, significantly shorten the cooling time, effectively control product shrinkage and deformation, and improve overall injection molding efficiency and product dimensional stability. Attached Figure Description

[0030] Figure 1 A three-dimensional schematic diagram of a manufacturing mold for an automotive airbag seat dust cover proposed in this utility model;

[0031] Figure 2 This is a schematic diagram of the inclined top of a mold for manufacturing a dust cover for an automotive airbag seat according to this utility model.

[0032] Figure 3 This is a schematic diagram of the outer slider of a manufacturing mold for an automotive airbag seat dust cover proposed in this utility model;

[0033] Figure 4 This is a schematic diagram of the structure of a dust cover for an automotive airbag seat, based on a manufacturing mold proposed in this utility model.

[0034] Legend:

[0035] 1. Mold base A plate; 2. Squeegee; 3. Mold foot; 4. Hydraulic cylinder one; 5. Hydraulic cylinder seat one; 6. Slider; 7. Water nozzle connector; 8. Mold groove; 9. Ejector plate support; 10. Water collector block; 11. Water pipe; 12. Mold base square iron; 13. Mold base B plate; 14. Mold base bottom plate; 15. Hydraulic cylinder two; 16. Mold core; 17. Angled ejector; 18. Inner slider; 19. Hydraulic cylinder seat two; 20. Wear-resistant block; 21. Outer slider; 22. Guide post; 23. Fastening screw; 24. Compactor block; 25. Hydraulic cylinder three; 26. Seat dust cover; 27. Hydraulic cylinder seat three; 28. Input end; 29. ​​Output end. Detailed Implementation

[0036] 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.

[0037] Reference Figure 1 - Figure 3 One embodiment of this utility model includes a mold blank A plate 1, a mold blank B plate 13, and a mold blank base plate 14. The mold blank A plate 1 is disposed above the mold blank B plate 13, and the two are connected by four guide pillars 22. The mold blank B plate 13 is provided with a mold groove 8 that cooperates with the guide pillars 22 to achieve precise positioning during the mold opening and closing process.

[0038] The mold blank B plate 13 is fixedly connected to the mold blank base plate 14 below. The mold blank base plate 14 has multiple mold feet 3 at its lower end to support the entire mold structure and install it on the injection molding equipment. The mold blank A plate 1 has a channel in the middle, in which a nozzle 2 is installed to guide the plastic melt injected by the injection molding machine to the cavity where the mold core 16 is located. The front end of the mold blank A plate 1 is respectively provided with an input end 28 and an output end 29 to ensure the air pressure balance in the mold cavity.

[0039] The mold core 16 is a hollow structure, located in the molding area between mold blank A plate 1 and mold blank B plate 13, and is used to define the shape and functional features of the dust cover. The mold core 16 has a central insertion hole for the angled ejector 17 to be inserted and pushed out at an angle when the mold opens, for molding and removing parts with undercut structures. A seat dust cover 26 is provided on the outside of the angled ejector 17 to protect the internal precision components. The angled ejector 17 is driven by a hydraulic cylinder 15 located below the mold blank base plate 14, and the hydraulic cylinder is fixedly mounted on a hydraulic cylinder seat 19.

[0040] The inner side of the mold core 16 is also provided with a pair of inner sliders 18, which slide and cooperate with the inclined ejector 17 to push out the complex internal cavity area. On both sides of the mold core 16, there is also a pair of horizontally sliding sliders 6, which are guided by guide rails in conjunction with the mold blank square iron 12, completing the demolding operation of side holes or snap-fit ​​structures when the mold opens. The mold blank square iron 12 is fixed to the side of the mold blank B plate 13 by screws.

[0041] Two external sliders 21 are symmetrically arranged on both sides of the mold. Each external slider 21 is driven by an independent hydraulic cylinder 4 and a hydraulic cylinder 25. The hydraulic cylinder 4 is installed in the hydraulic cylinder seat 5 on the mold base plate 14, and the hydraulic cylinder 25 is installed in the hydraulic cylinder seat 27 on the mold base plate 14. They can push the external sliders 21 to achieve lateral demolding. Wear-resistant blocks 20 are provided at the contact points between the external sliders 21 and the mold core 16 to reduce wear on the mold during high-frequency demolding and extend its service life.

[0042] An annular cooling water channel is provided inside the mold blank B plate 13. One end is connected to the water nozzle connector 7, and the other end is connected to the water collection block 10 through the water pipe 11, forming a closed-loop water circulation path. This cooling system can efficiently cool the mold core 16 and the sliding structure, shorten the injection molding cycle, and improve product stability.

[0043] To facilitate the ejection of the molded part, the mold base plate 14 is provided with an ejector plate support 9 in the middle, on which several ejector pin assemblies are installed to eject the product from the mold core 16 during the mold opening stage. The ejector pin structure can automatically reset when the mold is closed.

[0044] To ensure that mold plate A 1 and mold plate B 13 are stably closed during operation, multiple fastening screws 23 and clamping blocks 24 are provided around the mold to realize the mold locking, positioning and fixing functions, and ensure safe and high-precision operation during the injection molding process.

[0045] Working principle: Before injection molding begins, mold blank A plate 1 and mold blank B plate 13 close along the direction of guide post 22 under the drive of the injection molding machine. The lower end of guide post 22 is inserted into the mold groove 8 on mold blank B plate 13 to achieve precise positioning of the mold. Mold blank A plate 1 and mold blank B plate 13 are firmly pressed together by fastening screws 23 and clamping blocks 24 to ensure tight cavity closure and eliminate the risk of material leakage.

[0046] Subsequently, the injection molding machine nozzle connects with the nozzle 2, and the molten plastic enters the cavity defined by the mold core 16 through the nozzle 2, filling the entire product structure area. The mold core 16 includes the main outline of the dust cover and, together with the inner slider 18, outer slider 21, angled ejector 17, and slider 6, defines complex internal and external structural features.

[0047] After the molten plastic fills the cavity, it begins to cool down through the built-in cooling system. Cooling water enters the internal water channel of the mold blank B plate 13 from an external water source through the water nozzle connector 7, flows into the water collection block 10 through the water pipe 11, and forms a closed loop circulation to cool the area around the mold core 16, the slider 6 and the inclined ejector 17, so that the plastic can be shaped in a short time.

[0048] After the mold cools down, the injection molding machine starts the mold opening action, and mold blank A plate 1 separates from mold blank B plate 13 under the guidance of guide post 22. Hydraulic cylinder 15, located below mold blank base plate 14, is activated, pushing the inclined ejector 17 mounted on hydraulic cylinder seat 19 to eject obliquely, disengaging it from the inner undercut structure of the product. Simultaneously, the inclined ejector 17 drives the inner slider 18 to slide, assisting in ejecting the complex internal cavity structure. The slider 6 in mold blank B plate 13 slides outward under the guidance of the guide rail and mold blank square iron 12, releasing the tightness of side holes, positioning clips, and other lateral structures. Hydraulic cylinder 4, mounted on hydraulic cylinder seat 5, drives the outer slider 21 to push out horizontally, completing the demolding action of the side features. The wear-resistant block 20 at the contact point provides protection during sliding, preventing wear on the mold core 16.

[0049] After all the lateral structures have disengaged, the ejector assembly on the ejector plate 9 is activated, ejecting the shaped dust cover product from the mold core 16, thus achieving demolding. After demolding is complete, each slider returns to its original position under the action of a spring or hydraulic reset structure, and the mold structure automatically restores itself, preparing for the next injection molding cycle.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for manufacturing a dust cover for an automotive airbag seat, comprising a mold blank A plate (1), a mold blank B plate (13), and a mold blank base plate (14), characterized in that: The mold blank A plate (1) is connected above the mold blank B plate (13) by the guide post (22), and the mold blank B plate (13) is fixedly connected to the top of the mold blank base plate (14). The three together constitute the main structure of the mold. The mold is locked and fixed by fastening screws (23) and clamping blocks (24). The mold core (16) is located in the cavity area between the mold blank A plate (1) and the mold blank B plate (13) for forming the shape of the dust cover; The top of the mold plate A (1) is provided with a nozzle (2) for injecting plastic raw materials; The lower end of the guide post (22) is inserted into the mold groove (8) to achieve the positioning and guidance of the mold; Multiple mold feet (3) are provided below the mold base plate (14) for mounting support.

2. The manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that: The center of the mold core (16) is provided with an insertion hole, which is used in conjunction with the inclined ejector (17) to realize the demolding of the dust cover inverted structure. The inclined ejector (17) is driven by the lower hydraulic cylinder two (15). The hydraulic cylinder two (15) is installed on the top of the hydraulic cylinder seat two (19) below the mold base plate (14). A seat dust cover (26) is provided on the outside of the inclined ejector (17).

3. The manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that: Hydraulic cylinder 1 (4) is installed on each of the left and right sides of the mold blank B plate (13). Hydraulic cylinder 3 (25) is installed on the front side of the mold blank B plate (13). Hydraulic cylinder 1 (4) is fixed on hydraulic cylinder seat 2 (19). Hydraulic cylinder 3 (25) is fixed on hydraulic cylinder seat 3 (27). The output end of hydraulic cylinder 1 (4) is connected to the outer slider (21). The outer slider (21) is used to complete the demolding of the structure on the side of the cavity. Wear-resistant block (20) is provided in its sliding path. The wear-resistant block (20) is in contact with the mold core (16).

4. The manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that: The mold blank B plate (13) is provided with a cooling water channel. One end of the cooling water channel is connected to an external water source through a water nozzle connector (7), and the other end of the cooling water channel is connected to a water collection block (10) through a water pipe (11). The water collection block (10) is provided with multiple independent water outlets to form a closed-loop cooling circuit.

5. A manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that: The mold base plate (14) is provided with a ejector plate middle support (9) inside, and multiple ejector pin assemblies are connected on it. The ejector pin assemblies achieve automatic reset through an elastic structure.

6. The manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that: The mold core (16) is provided with inner sliders (18) on both sides and guided into the cavity. The inner sliders (18) and the inclined top (17) are connected in a sliding fit.

7. A manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that, It also includes a slider (6), which is slidably installed in conjunction with the mold blank square iron (12) via a guide rail. The mold blank square iron (12) is fixed on both sides of the mold blank B plate (13).

8. The manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that: The nozzle (2) is provided with a tapered fitting hole, the guide post (22) is a replaceable structure, and the guide post (22), mold plate A (1) and mold plate B (13) are screwed together through positioning holes.

9. A manufacturing mold for an automotive airbag seat dust cover according to claim 1, characterized in that: The mold plate A (1) is symmetrically provided with an input end (28) and an output end (29) on its front side.

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