Ejecting, clamping and forced demolding mold for automobile safety air bag shell

Abstract

The utility model discloses an automobile safety air bag shell ejection clamping rotation forced demolding mold which comprises a fixed mold plate and a movable mold plate, the upper end of the fixed mold plate is connected with a mold ejection plate, a fixed mold core is arranged in the lower end of the fixed mold plate, and the rear end of one side of the outer portion of the fixed mold plate is connected with a mold locking block. Straight ejection demolding blocks A are arranged in the four directions of an automobile safety airbag shell forming part on a movable mold core, and straight ejection demolding blocks B for secondarily ejecting an automobile safety airbag product are movably arranged in the straight ejection demolding blocks A; the automobile safety air bag shell is forcibly demolded in the stage that the first-time straight ejection demolding module A of the automobile safety air bag shell is ejected out of the movable mold core, and then the straight ejection demolding module A does not participate in the second-time ejection demolding action of the straight ejection demolding module B and directly and independently enables the straight ejection demolding module B to eject and strip the automobile safety air bag shell. Therefore, glue shoveling caused by ejection demolding of the automobile safety air bag shell can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and particularly relates to a mold for ejecting, clamping and forcibly separating an airbag housing of an automobile. Background Art

[0002] With the improvement of people's safety awareness, existing automobiles are usually equipped with airbags to protect the safety of drivers and passengers. In particular, the airbag installed in the steering wheel of an automobile plays an important role in protecting the driver. Existing steering wheel airbags usually adopt various forms such as mechanically vibrating to detonate solid nitrogen for inflation or electronically igniting a micro gunpowder for inflation. Before inflation, the airbag is hidden in the steering wheel, and a cover plate is provided on the steering wheel to cover the airbag. When the automobile undergoes a severe collision, the airbag is instantaneously inflated, tearing the cover plate along a certain tearing line and ejecting it, separating between the steering wheel and the driver to play a role in protecting the driver. The airbag cover plate is usually injection molded. When injection molding, the glue is directly injected from the side of the mold. After injection molding, redundant sprue will be generated on the side of the product, and manual labor is required to remove the redundant sprue part, which increases the labor cost, fails to improve the production efficiency, and also increases the unqualified rate of the product appearance.

[0003] Therefore, an injection mold for an airbag cover plate with the publication number of "CN207942654U" includes a moving mold and a fixed mold. The moving mold and the fixed mold form a mold body. A cavity formed by combining the moving mold and the fixed mold is provided in the mold body. A runner communicating with the side of the cavity is further provided in the mold body. A mold internal cutting mechanism is arranged in the runner. The mold internal cutting mechanism is fixed on the fixed mold, and a glue inlet communicating with the runner is provided on the mold internal cutting mechanism. After injection molding, redundant sprue is generated in the glue inlet. When the mold is opened, the mold internal cutting mechanism remains stationary with the fixed mold. When the moving mold retreats, the product moves with the moving mold. In this way, relative movement occurs between the product and the mold internal cutting mechanism, so that the redundant sprue is cut off. In this way, there is no need for manual removal of the redundant sprue, the production efficiency is improved, the labor cost is reduced, and the qualified rate of the product is also increased.

[0004] However, for the above injection mold for an airbag cover plate, although when the moving mold retreats, the product moves with the moving mold, so that relative movement occurs between the product and the mold internal cutting mechanism, and the redundant sprue is cut off, there are still the following obvious defects in the use process: as the lifter is disengaged, space is left for the claw to be forcibly demolded. The claw is gradually demolded under the ejection of the straight ejector A and the straight ejector B. After the lifter reaches its own ejection stroke, it stops moving. The straight ejector A and the straight ejector B continue to forcibly eject the product. After reaching the second ejection stroke, the straight ejector A stops moving, and the straight ejector B continues to move until the product is completely separated. Glue scraping occurs, so that the force of the straight ejector B is too small, resulting in the claw not being completely ejected and being scraped by the straight ejector B instead. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide an ejection, clamping and strong ejection die for an automotive airbag housing, so as to solve the problems presented in the above-mentioned background technology.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: an ejection, clamping and strong ejection die for an automotive airbag housing, including a fixed template and a movable template. A mold top plate is connected to the upper end of the fixed template. A fixed mold core is provided inside the lower end of the fixed template. A locking module is connected to the rear end on the outer side of the fixed template. A clamping block A is provided between the outer side of the fixed mold core and three surfaces of the inner cavity of the fixed template. The lower end of the movable template is fixedly connected to a mold base, and the lower end of the mold base is fixedly connected to the upper end of a mold bottom plate. A movable mold core is provided inside the upper end of the movable template. System lifting plates are respectively movably connected inside the front and rear ends of the mold base. Return ejector rods that extend outwards to both sides of the upper end of the movable template are connected to the upper ends of the system lifting plates. A clamping block B for clamping the movable mold core is provided between one outer side of the movable mold core and the inner cavity of the movable template. Straight ejector modules A with inclined upward slopes for strongly ejecting the automotive airbag product are provided in four directions of the automotive airbag housing forming part on the movable mold core. A straight ejector module B for secondarily ejecting the automotive airbag product is movably provided inside the straight ejector module A.

[0007] Preferably, guide holes are respectively provided inside the four peripheries of the lower end of the fixed template, and lifting ring hole positions are symmetrically provided on both side surfaces of the fixed template. When the movable template moves forward, at this time, the guide columns connected to the four peripheries of the upper end of the movable template move inwards along the guide holes. When the lower end of the fixed template comes into contact with the bearing plate, at this time, the fixed template and the movable template are attached together.

[0008] Preferably, bearing blocks are respectively fixedly connected to the four peripheries of the upper end of the movable template, guide columns are respectively fixedly connected to the upper ends of the bearing blocks, and a travel switch is installed on one side of the front end of the mold base.

[0009] Preferably, lifting rings are respectively fixedly connected to the rear side of one end of the fixed template and the front side of one end of the mold base. Precision positioning blocks are embedded and fixed at the central positions of the four side edges of the end of the fixed template, and a hot runner connection part is connected to one side of the outside of the fixed template.

[0010] Preferably, cooling water collecting and distributing blocks are connected to one side of both the fixed template and the movable template, and two cooling water connectors are connected to each of the cooling water collecting and distributing blocks, so that cooling liquid enters the fixed template and the movable template through the cooling water connectors, playing a role in cooling the melted material after injection molding.

[0011] Preferably, a sensing sensor for mold closing distance sensing is fixed on one side of the front end of the moving template, and a temperature measuring thermometer is embedded in the upper part of the middle of the front end of the fixed template. The temperature measuring thermometer can measure the temperature of the injection molding material in the moving die core to prevent the moving template from moving again after contacting the fixed template, resulting in damage to the mold.

[0012] Compared with the prior art, the technical effects and advantages of the present utility model are as follows: for this ejection, clamping and strong demolding mold for automobile airbag shells, straight ejection and demolding modules A with inclined upward slopes for strongly demolding the automobile airbag product are provided in four directions on the automobile airbag shell forming part of the moving die core. And a straight ejection and demolding module B for secondarily ejecting the automobile airbag product is movably arranged in the straight ejection and demolding module A. By using the ejection force of the straight ejection and demolding module A, the automobile airbag shell is forcibly demolded during the first stage when the straight ejection and demolding module A ejects from the moving die core. Then, the straight ejection and demolding module A does not participate in the second ejection and demolding action of the straight ejection and demolding module B, and directly and independently makes the straight ejection and demolding module B eject and strip the automobile airbag shell, so as to avoid scraping glue during the ejection and demolding of the automobile airbag shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present utility model;

[0014] Figure 2 is a top view structural schematic diagram of the moving template of the present utility model;

[0015] Figure 3 is a top view structural schematic diagram of the fixed template of the present utility model.

[0016] In the figure: 1, fixed template; 2, moving template; 3, mold top plate; 4, fixed die core; 5, locking module; 6, mold base; 7, mold bottom plate; 8, moving die core; 9, system lifting plate; 10, clamping block A; 11, clamping block B; 12, straight ejection and demolding module A; 13, guide hole; 14, lifting ring hole position; 15, bearing block; 16, guide post; 17, lifting ring; 18, precision fixing block; 19, hot runner connection part; 20, travel switch; 21, cooling water collecting and distributing block; 22, cooling water joint; 23, sensing sensor; 24, temperature measuring thermometer; 25, return ejector rod; 26, straight ejection and demolding module B. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-3 , the utility model provides a technical solution: a die for ejecting, clamping and strongly ejecting the top of an automobile airbag shell, which includes a fixed template 1 and a movable template 2. A die top plate 3 is connected to the upper end of the fixed template 1. A fixed die core 4 is arranged inside the lower end of the fixed template 1, so that the fixed die core 4 and the movable die core 8 are combined to form a molding cavity for the automobile airbag shell. A locking module 5 is connected to the rear end of the outer side of the fixed template 1. After the fixed die core 4 and the movable die core 8 are closed, the locking module 5 is automatically locked to ensure the stability during the subsequent pouring after the die is closed. Between the outer side of the fixed die core 4 and three inner surfaces of the fixed template 1, there is a squeezing block A10, which can keep the position of the fixed die core 4 unchanged in the fixed template 1. The lower end of the movable template 2 is fixedly connected to a die seat 6, and the lower end of the die seat 6 is fixedly connected to the upper end of a die bottom plate 7. A movable die core 8 is arranged inside the upper end of the movable template 2, which is conducive to the pouring and molding of the automobile airbag shell. The system lifting plates 9 are respectively movably connected inside the front and rear ends of the die seat 6, so that the system lifting plates 9 move upward under the lifting of the lifting device. The upper ends of the system lifting plates 9 are connected with return ejector rods 25 that extend out to both sides of the upper end of the movable template 2, so that the movable template 2 can return to the initial state during the process of ejecting the material. Between one outer side of the movable die core 8 and the inner cavity of the movable template 2, there is a squeezing block B11 for squeezing the movable die core 8, ensuring the stability of the position of the movable die core 8 during the die closing process and preventing the phenomenon of deviation. On four directions of the automobile airbag shell forming part on the movable die core 8, there are straight ejecting and strongly demolding modules A12 with inclined upward slopes for ejecting the automobile airbag product, which can directly eject and strip the airbag shell, avoiding the phenomenon of product rubber scraping. Inside the straight ejecting and strongly demolding module A12, there is a straight ejecting module B26 for secondary ejecting of the automobile airbag product, realizing the secondary ejecting and stripping of the product.

[0019] Guide holes 13 are respectively arranged inside the four weeks of the lower end of the fixed template 1, so as to ensure the accuracy of the die closing between the fixed template 1 and the movable template 2 during the die closing process and avoid the phenomenon of displacement during the die closing. There is a system control terminal box on one side of the movable template 2, and lifting ring holes 14 are symmetrically arranged on both sides of the fixed template 1, which is conducive to the hoisting and fixing of the die. The upper ends of the four weeks of the movable template 2 are respectively fixedly connected with pressure-bearing blocks 15, so that the guide columns 16 have better stability. The upper ends of the pressure-bearing blocks 15 are respectively fixedly connected with guide columns 16, strengthening the accuracy of the die closing. A travel switch 20 is installed on one side of the front end of the die seat 6, which can control the control during the die closing stroke of the die.

[0020] A lifting ring 17 is fixedly connected to the rear side of one end of the fixed template 1 and the front side of one end of the mold base 6 respectively. Precision fixed blocks 18 are embedded and fixed at the central positions of the four sides of the end of the fixed template 1. A hot runner connection part 19 is connected to one side of the outside of the fixed template 1. Cooling water collecting and distributing blocks 21 are connected to one side of both the fixed template 1 and the moving template 2. Two cooling water connectors 22 are connected to each of the cooling water collecting and distributing blocks 21. A sensing sensor 23 for sensing the mold closing distance is fixed on the front side of one end of the moving template 2. A temperature measuring thermometer 24 is embedded at the upper end of the middle part of the front end of the fixed template 1 to monitor the temperature of the molded product, so that the product can be demolded smoothly.

[0021] Specifically, during use, the mold top plate 3 is connected to an external hot runner device, and at the same time, it is connected to the hot runner system through the hot runner connection part 19. The mold bottom plate 7 is fixed on the injection molding equipment while ensuring that the moving template 2 and the fixed template 1 are on the same vertical line. At this time, the lower end of the system lifting plate 9 arranged at the front and rear ends of the mold base 6 is connected to the external lifting device of the mold, and the system lifting plate 9 performs a mold closing movement under the lifting of the lifting device. At the same time, the return ejector rod 25 connected to its upper end moves. When the moving template 2 moves upward, at this time, the guide columns 16 connected to the four sides of the upper end of the moving template 2 move inward along the guide holes 13. When the lower end of the fixed template 1 contacts the pressure bearing block 15, at this time, the fixed template 1 and the moving template 2 are attached together. At the same time, the return ejector rod 25 moves downward under the push of the fixed template 1. At this time, the system lifting plate 9 moves downward and triggers the travel switch 20. At this time, the molten material enters the combined molding cavity of the moving mold core 8 and the fixed mold core 4 through the sprue bushing. At the same time, the cooling water collecting and distributing blocks 21 are started synchronously, so that the cooling liquid enters the fixed template 1 and the moving template 2 through the cooling water connectors 22, playing a role in cooling the injection-molded automotive airbag shell product. After the injection molding is completed, the moving template 2 moves backward. At this time, the return ejector rod 25 moves upward at the same time and returns to its original position. At the same time, the travel switch 20 is triggered again by the system lifting plate 9. At this time, the cooling water collecting and distributing blocks 21 are closed, and at the same time, the system of the hot runner connection part 19 is closed. At this time, the injection-molded product can be taken off. Subsequently, through the moving mold core 8, the direct ejection module A 12, and the direct ejection module B 26, after the moving template 2 and the fixed template 1 are separated, the direct ejection module A 12 and the direct ejection module B 26 work in sequence. Using the ejection force of the direct ejection module A 12, the automotive airbag shell is forcibly demolded during the first stage when the direct ejection module A 12 ejects the automotive airbag shell from the moving mold core 8. Then, the direct ejection module A 12 does not participate in the second ejection and demolding action of the direct ejection module B 26, and directly makes the direct ejection module B 26 eject and strip the automotive airbag shell alone. This can avoid the phenomenon of scraping glue during the ejection and demolding of the automotive airbag shell and improve the demolding quality.

[0022] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An ejection, clamping and forced - detachment die for an automotive airbag housing, comprising a fixed template (1) and a movable template (2), characterized in that: The upper end of the stationary template (1) is connected to a mold top plate (3). A stationary mold core (4) is provided inside the lower end of the stationary template (1). A locking module (5) is connected to the rear end of the outer side of the stationary template (1). A clamping block A (10) is provided between the outer side of the stationary mold core (4) and three inner surfaces of the cavity of the stationary template (1). The lower end of the movable template (2) is fixedly connected to a mold base (6). The lower end of the mold base (6) is fixedly connected to the upper end of a mold bottom plate (7). A movable mold core (8) is provided inside the upper end of the movable template (2). System lifting plates (9) are respectively movably connected inside the front and rear ends of the mold base (6). The upper ends of the system lifting plates (9) are connected to return ejector rods (25) that extend outwards and upwards to both sides of the upper end of the movable template (2). A clamping block B (11) for clamping the movable mold core (8) is provided between one outer side of the movable mold core (8) and the inner cavity of the movable template (2). Four-directional straight ejector modules A (12) for strongly ejecting and demolding the automotive airbag product and having an inclined upward slope are provided on the automotive airbag shell forming part of the movable mold core (8). A straight ejector module B (26) for secondarily ejecting the automotive airbag product is movably provided inside the straight ejector module A (12).

2. The ejection, clamping, and forced separation die for the top of an automotive airbag housing according to claim 1, wherein: Guide holes (13) are respectively provided inside the four peripheries of the lower end of the stationary template (1), and lifting ring hole positions (14) are symmetrically provided on both sides of the stationary template (1).

3. The ejection, clamping, and forced separation die for the airbag housing of an automobile according to claim 1, wherein: Bearing blocks (15) are respectively fixedly connected to the four peripheries of the upper end of the movable template (2). Guide columns (16) are respectively fixedly connected to the upper ends of the bearing blocks (15). A travel switch (20) is installed on one side of the front end of the mold base (6).

4. The ejection, clamping and forced separation die for the airbag housing of an automobile according to claim 1, characterized in that: Lifting rings (17) are respectively fixedly connected to the rear side of one end of the stationary template (1) and the front side of one end of the mold base (6). Precision positioning blocks (18) are embedded and fixed at the central positions of the four side edges of the end of the stationary template (1), and a hot runner connection part (19) is connected to one side of the outside of the stationary template (1).

5. A stripping, clamping and forced detachment die for an automobile airbag housing according to claim 1, characterized in that: Cooling water collecting and distributing blocks (21) are connected to one side of both the stationary template (1) and the movable template (2). Two cooling water connectors (22) are connected to each of the cooling water collecting and distributing blocks (21).

6. The ejection, clamping and forced release die for an automotive airbag housing according to claim 1, characterized in that: A sensing sensor (23) for sensing the mold closing distance is fixed on one side of the front end of the movable template (2). A temperature measuring thermometer (24) is embedded and provided at the upper end of the middle part of the front end of the stationary template (1).

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