Injection mold for integrally forming automobile instrument panel and airbag frame

Abstract

The utility model provides an automobile instrument board and safety air bag frame integrated forming injection mold belongs to mould technical field. It includes upper die plate and lower die plate, be equipped with forming cavity between the upper die plate and lower die plate, the lower die plate is provided with the forming insert piece that protrudes, the lower die plate left and right sides symmetry is equipped with end portion side draw mechanism, the forming insert piece front side is provided with air bag frame forming groove and leans. The utility model discloses through the forming cavity between upper die plate and lower die plate, the forming insert piece on the lower die plate and the symmetrically arranged end portion side draw mechanism and the front side core pulling mechanism corresponding with air bag frame forming groove, has realized the integrated forming of instrument board and safety air bag frame, has dispensed with the traditional buckle assembly, foaming etc. after the design of many processes of large scale, has simplified the production process greatly, and the integrated forming structure can promote the stability of both connections, avoids the cooperation deviation problem that can appear in the subsequent assembly process.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to an injection mold for the integrated molding of an automotive dashboard and an airbag frame. Background Technology

[0002] In the automotive injection molding industry, the dashboard, as a core component of the cockpit, directly affects driving safety and product lifespan through its assembly precision with the airbag frame. Currently, the industry generally adopts the traditional process of "separate design and step-by-step assembly": first, the dashboard frame and airbag frame are separately injection molded; then, the airbag frame is fastened to the dashboard frame using a pre-set snap-fit ​​structure; after assembly, an additional foaming process is required to fill the gaps between the two and strengthen the connection stability, ultimately forming a complete dashboard assembly before it can proceed to the vehicle assembly stage.

[0003] This traditional process has several technical drawbacks: First, the process chain is lengthy, involving multiple independent processes from individual component molding to fastening, foaming, and final assembly. This not only extends the production cycle but also requires more tooling equipment and operating stations, resulting in low production efficiency. Second, assembly precision is difficult to guarantee. During the fastening process, gaps can easily occur due to component size deviations and fastener wear. Although the subsequent foaming process can compensate for some gaps, uneven foam layer thickness may cause bulging and deformation on the dashboard surface, affecting appearance quality and structural stability. Third, there are high safety risks. The separately assembled structure relies on the double fixation of fasteners and foam layers. In long-term use, fasteners are prone to aging and loosening due to vibration and temperature changes, and the foam layer may also crack, posing a potential hazard of airbag frame detachment or deployment failure. Fourth, production costs are high. Increased labor input due to multiple processes, higher defect rates such as fastening failure and foam defects requiring rework, and mold investment and material losses due to the separate production of two types of components all significantly increase the overall production cost. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing an integrated injection mold for automotive dashboards and airbag frames.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An integrated injection mold for an automotive dashboard and airbag frame includes an upper mold plate and a lower mold plate, with a molding cavity between the upper and lower mold plates. A molding insert protrudes from the lower mold plate, and end side pulling mechanisms are symmetrically arranged on the left and right sides of the lower mold plate. An airbag frame molding groove is inclinedly arranged on the front side of the molding insert, and a front core pulling mechanism corresponding to the airbag frame molding groove is provided on the front side of the lower mold plate.

[0007] In the aforementioned integrated injection mold for automotive dashboard and airbag frame, the front core-pulling mechanism includes a front core-pulling seat that is inclined and slidably connected to the lower template. The inner end of the front core-pulling seat is fixedly connected to a movable insert whose front end can be inserted into the airbag frame molding groove and combined with the airbag frame molding groove to form an airbag frame molding cavity. The lower template is also provided with an insert driving assembly.

[0008] In the aforementioned integrated injection mold for the automotive dashboard and airbag frame, the movable insert is also equipped with an air-assisted demolding structure.

[0009] In the aforementioned integrated injection mold for automotive dashboard and airbag frame, the air-assisted demolding structure includes an air-assisted flow channel disposed inside a movable insert and having an air outlet on the side of the movable insert, and a valve is provided at the air outlet of the air-assisted flow channel.

[0010] In the aforementioned integrated injection mold for automotive dashboard and airbag frame, the insert drive assembly includes a driver mounting base fixed on the lower template, and a linear driver that can drive the movable insert to move along the inclined direction of the airbag frame molding groove is obliquely fixed on the driver mounting base.

[0011] In the aforementioned integrated injection mold for the automotive dashboard and airbag frame, the driver mounting base is provided with an air auxiliary connector, the inner end of which is connected to the air inlet of the air auxiliary flow channel via a hose.

[0012] In the aforementioned integrated injection mold for automotive dashboard and airbag frame, the end side pulling mechanism includes a horizontally arranged end core pulling seat that is slidably connected to the lower template. The inner end of the end core pulling seat is provided with a side insert that abuts against the end of the molding insert. It also includes a drive structure arranged on the upper template.

[0013] In the aforementioned integrated injection mold for automotive dashboard and airbag frame, the drive structure includes two drive rods that are inclined and fixed on the upper template. The bottom end of the drive rod is inserted into the end core-pulling seat and slidably connected to the end core-pulling seat.

[0014] In the aforementioned integrated injection mold for automotive dashboard and airbag frame, the lower template is also provided with an outer limiting block corresponding to the end core-pulling seat. The outer limiting block is located outside the end core-pulling seat and is detachably connected to the lower template by screws. The outer limiting block has a stepped structure and has at least two vertical limiting parts at its inner end.

[0015] In the aforementioned integrated injection mold for automotive dashboard and airbag frame, a combined ejection mechanism is provided on the lower side of the lower template. The combined ejection mechanism includes a top plate located on the lower side of the lower template. Several inclined ejector blocks are provided on the top plate near the front side of the molding insert. The inclined ejector blocks are connected to the top plate via inclined ejector rods. Several straight ejector rods are provided on the top plate near the rear side of the molding insert.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. This utility model achieves integrated molding of the dashboard and the airbag frame through the molding cavity between the upper and lower templates, the molding inserts on the lower template, the symmetrically arranged end side pulling mechanism, and the front core pulling mechanism corresponding to the airbag frame molding groove. This design eliminates the need for multiple processes such as buckle assembly and foaming after traditional separate design, greatly simplifying the production process. At the same time, the integrated molding structure can improve the stability of the connection between the two and avoid the possible fitting deviation problems in the subsequent assembly process.

[0018] 2. The front core-pulling mechanism, through an inclined front core-pulling seat that slides with the lower template and a movable insert at its end that can be inserted into the airbag frame forming groove, along with the insert drive assembly, can precisely control the movement trajectory and position of the movable insert. This structure solves the problem of difficult demolding or insufficient molding accuracy when molding a tilted airbag frame structure using traditional molds, ensuring the complete formation of the airbag frame forming cavity and smooth demolding, further guaranteeing the molding quality of the integrated product. At the same time, the setting of the drive assembly makes the core-pulling action more stable and controllable, improving the reliability of mold operation.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a structural diagram of the lower template;

[0022] Figure 3 This is a partial structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the front core-pulling mechanism. Detailed Implementation

[0024] like Figures 1-4As shown, an integrated injection mold for an automotive dashboard and airbag frame includes an upper mold plate 1 and a lower mold plate 2. A molding cavity is provided between the upper mold plate 1 and the lower mold plate 2. A molding insert 3 is protruding from the lower mold plate 2. End side pulling mechanisms 4 are symmetrically arranged on the left and right sides of the lower mold plate 2. An airbag frame molding groove 5 is inclinedly arranged on the front side of the molding insert 3. A front core pulling mechanism 6 corresponding to the airbag frame molding groove 5 is provided on the front side of the lower mold plate 2.

[0025] This invention achieves integrated molding of the dashboard and airbag frame through the molding cavity between the upper and lower templates, the molding insert on the lower template, the symmetrically arranged end side pulling mechanism, and the front core pulling mechanism corresponding to the airbag frame molding groove. This design eliminates the need for multiple processes such as buckle assembly and foaming after traditional separate design, greatly simplifying the production process. At the same time, the integrated molding structure can improve the stability of the connection between the two and avoid the matching deviation problem that may occur during subsequent assembly.

[0026] Specifically, the front core-pulling mechanism 6 includes a front core-pulling seat 7 that is inclined and slidably connected to the lower template 2. The inner end of the front core-pulling seat 7 is fixedly connected to a movable insert 8 whose front end can be inserted into the airbag frame forming groove 5 and combine with the airbag frame forming groove 5 to form an airbag frame forming cavity. The lower template 2 is also equipped with an insert driving assembly. Through the inclined front core-pulling seat slidably connected to the lower template, and the movable insert whose end can be inserted into the airbag frame forming groove, the front core-pulling mechanism, in conjunction with the insert driving assembly, can precisely control the movement trajectory and position of the movable insert. This structure solves the problem of difficult demolding or insufficient molding accuracy when molding a tilted airbag frame structure using traditional molds, ensuring the complete formation and smooth demolding of the airbag frame forming cavity, further guaranteeing the molding quality of the integrated product. At the same time, the driving assembly makes the core-pulling action more stable and controllable, improving the reliability of mold operation.

[0027] Preferably, the movable insert 8 is further provided with an air-assisted demolding structure 9. The air-assisted demolding structure provided in the movable insert solves the problem of excessive demolding force, product damage or deformation caused by the product sticking to the mold cavity in traditional demolding methods; air-assisted demolding forms an air film between the product and the mold contact surface through the action of gas, reducing the friction between the two, so that the product can be detached from the movable insert more easily and completely. This not only improves demolding efficiency, but also effectively protects the molding structure of the integrated product, avoids damage to the dashboard or airbag frame during the demolding process, and ensures the product qualification rate.

[0028] Specifically, the gas-assisted demolding structure 9 includes a gas-assisted flow channel 10 disposed inside the movable insert 8 and having an air outlet on the side of the movable insert 8. A valve is installed at the air outlet of the gas-assisted flow channel 10. In the gas-assisted demolding structure, the gas-assisted flow channel inside the movable insert and the valve at the air outlet can precisely control the timing and flow rate of gas outflow. This design solves the problems of unstable gas supply and inability to flexibly adjust according to product molding conditions in traditional gas-assisted structures. Valve control ensures that appropriate gas pressure and flow rate are provided at the critical demolding moment, guaranteeing stable gas film formation. It also avoids product molding defects caused by premature or excessive gas supply, further optimizing the demolding effect and improving the consistency and stability of product molding.

[0029] Specifically, the insert drive assembly includes a driver mounting base 11 fixed on the lower template 2. A linear driver 12, which drives the movable insert 8 to move along the inclined direction of the airbag frame forming groove 5, is obliquely fixed on the driver mounting base 11. In the insert drive assembly, the driver mounting base fixed on the lower template and the obliquely fixed linear driver can drive the movable insert to move precisely along the inclined direction of the airbag frame forming groove. This structure solves the problem of mismatch between the driving force direction and the required movement direction of the movable insert, leading to low movement accuracy or component wear, which may exist in traditional drive methods. The precise drive of the linear driver ensures the positional accuracy of the movable insert during the molding and demolding process, improves the molding accuracy of the mold, reduces component wear, and extends the service life of the mold.

[0030] Those skilled in the art will understand that a linear actuator can be a hydraulic cylinder, a pneumatic cylinder, or a linear motor, etc.

[0031] Specifically, the actuator mounting base 11 is equipped with an air-assisted connector 13, the inner end of which is connected to the air inlet of the air-assisted flow channel 10 via a hose. The air-assisted connector on the actuator mounting base, connected to the air inlet of the air-assisted flow channel via a hose, achieves a stable air supply to the air-assisted system. This design solves the problems of complex pipeline layout, inconvenient disassembly and assembly, or poor sealing performance leading to gas leakage in traditional air circuit connection methods. The hose connection facilitates the disassembly and maintenance of mold components, and the air-assisted connector ensures the air circuit connection's sealing performance, preventing gas leakage from affecting the air-assisted demolding effect. It also simplifies the air circuit structure and reduces mold maintenance costs and difficulty.

[0032] Specifically, the end-side pulling mechanism 4 includes an end core-pulling seat 14 horizontally arranged and slidably connected to the lower template 2. The inner end of the end core-pulling seat 14 is provided with a side insert 15 that abuts against the end of the forming insert 3. It also includes a driving structure disposed on the upper template 1. In the end-side pulling mechanism, the horizontally slidably connected end core-pulling seat and the side insert whose inner end abuts against the end of the forming insert, together with the driving structure of the upper template, realize precise core pulling at the mold end. This design solves the problem of incomplete product end molding or demolding difficulties caused by the inability to effectively pull cores in traditional end molding structures. The close cooperation between the side insert and the forming insert ensures the molding accuracy of the product end. The horizontal sliding core-pulling method makes the core-pulling action smoother, avoids impact on the product, and further ensures the overall molding quality of the integrated product.

[0033] Specifically, the drive structure includes two drive rods 16 that are inclined and fixed on the upper template 1. The bottom ends of the drive rods 16 are inserted into the end core-pulling seat 14 and slidably connected to it. The two drive rods, inclined and fixed on the upper template, have their bottom ends inserted into and slidably connected to the end core-pulling seat. The opening and closing action of the upper template synchronously drives the movement of the end core-pulling seat. This design solves the problem that traditional end-side pulling mechanisms require an additional independent drive device, leading to complex mold structures and high costs. By using a drive method linked to the upper template, the mold structure is simplified, the number of parts is reduced, and the synchronous coordination of the core-pulling action and the mold opening and closing action is achieved, improving mold operation efficiency and reducing equipment control difficulty.

[0034] Specifically, the lower template 2 is also provided with an outer limiting block 17 corresponding to the end core-pulling seat 14. The outer limiting block 17 is located on the outside of the end core-pulling seat 14 and is detachably connected to the lower template 2 by screws. The outer limiting block 17 has a stepped structure, and its inner end has at least two vertical limiting parts 18. Adjusting the position of the outer limiting block 17 on the lower template 2 can adjust the maximum stroke of the end core-pulling seat 14. The outer limiting block on the lower template corresponding to the end core-pulling seat, through its detachable connection and stepped vertical limiting parts, can adjust the maximum stroke of the end core-pulling seat. This design solves the problem that traditional limiting structures cannot flexibly adjust the stroke, adapt to the production of different specifications of products, or make stroke adjustment difficult during mold maintenance. The detachable connection facilitates the replacement and adjustment of the outer limiting block, and the multi-position design of the vertical limiting parts can accurately control the movement range of the end core-pulling seat. It can not only adapt to the production needs of integrated products of different sizes, but also quickly adjust the stroke during mold maintenance, improving the versatility and maintenance convenience of the mold.

[0035] Specifically, a combined ejection mechanism is also provided on the lower side of the lower mold plate 2. This combined ejection mechanism includes a top plate 19 located on the lower side of the lower mold plate 2. Several inclined ejector blocks 20 are positioned near the front of the forming insert 3 on the top plate 19. The inclined ejector blocks 20 are connected to the top plate 19 via inclined ejector rods. Several straight ejector rods 21 are positioned near the rear of the forming insert 3 on the top plate 19. This combined ejection mechanism on the lower side of the lower mold plate, through the cooperation of the inclined ejector blocks and straight ejector rods on the top plate, achieves multi-directional and stable ejection of the integrated product. This design solves the problem that traditional single ejection methods may lead to uneven force distribution, deformation, or damage during product ejection. The inclined ejector blocks and straight ejector rods eject different areas of the product respectively, ensuring uniform distribution of ejection force and avoiding stress concentration during ejection. Furthermore, the combined design of the ejection mechanism adapts to the complex structural shape of the integrated product, ensuring that the product can be completely and smoothly ejected from the mold cavity, further improving product qualification rate and production efficiency.

[0036] The working principle of this utility model is as follows: through the molding cavity between the upper and lower templates, the molding insert on the lower template, the symmetrically arranged end side pulling mechanism and the front core pulling mechanism corresponding to the airbag frame molding groove, the instrument panel and the airbag frame are integrated into one molding. This design eliminates the need for multiple processes such as buckle assembly and foaming after traditional separate design, which greatly simplifies the production process. At the same time, the integrated molding structure can improve the stability of the connection between the two and avoid the possible fitting deviation problem in the subsequent assembly process.

[0037] The front core-pulling mechanism, through an inclined front core-pulling seat slidably connected to the lower mold plate and a movable insert at its end that can be inserted into the airbag frame forming groove, along with an insert drive assembly, can precisely control the movement trajectory and position of the movable insert. This structure solves the problems of difficult demolding or insufficient molding accuracy in traditional molds when molding inclined airbag frame structures, ensuring the complete formation and smooth demolding of the airbag frame forming cavity, further guaranteeing the molding quality of the integrated product. Simultaneously, the drive assembly makes the core-pulling action more stable and controllable, improving the reliability of mold operation. The air-assisted demolding structure within the movable insert further... This method solves the problems of excessive demolding force, product damage, or deformation caused by product adhesion to the mold cavity in traditional demolding methods. Gas-assisted demolding forms an air film between the product and the mold contact surface through the action of gas, reducing the friction between the two and allowing the product to detach from the moving insert more easily and completely. This not only improves demolding efficiency but also effectively protects the molding structure of the integrated product, avoiding damage to the dashboard or airbag frame during the demolding process and ensuring product qualification rate. In the gas-assisted demolding structure, the gas-assisted flow channel inside the moving insert and the valve at the air outlet can precisely control the timing and flow rate of gas outflow. This design solves the problems of unstable gas supply and inflexible adjustment according to product molding in traditional gas-assisted structures. Valve control ensures appropriate gas pressure and flow at critical demolding moments, guaranteeing stable gas film formation and preventing product molding defects caused by premature or excessive gas supply. This further optimizes demolding performance and improves product molding consistency and stability. In the insert drive assembly, the driver mounting base fixed to the lower mold plate and the tilted linear driver drive the moving insert to move precisely along the inclined direction of the airbag frame molding groove. This structure solves the problem of mismatch between the driving force direction and the required movement direction of the moving insert, which can lead to inaccurate movement in traditional drive methods. To address issues such as low accuracy or component wear, the precise drive of the linear actuator ensures the accurate positioning of the moving insert during molding and demolding, improving mold forming precision, reducing component wear, and extending mold life. The air-assisted connector on the actuator mounting base is connected to the air inlet of the air-assisted flow channel via a hose, achieving a stable air supply to the air-assisted system. This design solves the problems of complex pipeline layout, inconvenient disassembly and assembly, or poor sealing performance leading to gas leakage in traditional air circuit connection methods. The hose connection facilitates the disassembly and maintenance of mold components, and the air-assisted connector ensures the sealing of the air circuit connection, preventing gas leakage from affecting the air-assisted demolding effect. At the same time, it simplifies the air circuit structure and reduces mold maintenance costs and difficulties.

[0038] In the end-side pulling mechanism, the horizontally sliding end core-pulling seat and its inner end abutting against the end of the forming insert, along with the drive structure of the upper template, achieve precise core pulling at the mold end. This design solves the problem of incomplete product end forming or demolding difficulties caused by the inability to effectively pull cores in traditional end forming structures. The tight fit between the side insert and the forming insert ensures the forming accuracy of the product end. The horizontally sliding core-pulling method makes the core-pulling action smoother, avoiding impact on the product and further ensuring the overall forming quality of the integrated product. In the drive structure, two drive rods are inclined and fixed on the upper template, with their bottom ends inserted into and slidably connected to the end core-pulling seat. The opening and closing action of the upper template synchronously drives the movement of the end core-pulling seat. This design solves the problem that traditional end-side pulling mechanisms require an additional independent drive device, resulting in complex mold structures and... This design addresses the challenges of traditional limiting structures by employing a drive mechanism linked to the upper template. This simplifies the mold structure, reduces the number of parts, and achieves synchronized coordination between the core-pulling action and the mold opening and closing action. This improves mold operation efficiency and reduces equipment control difficulty. The outer limit block on the lower template, corresponding to the end core-pulling seat, features a detachable connection and a stepped vertical limiting part. This allows for adjustment of the maximum stroke of the end core-pulling seat. This design solves the problems of traditional limiting structures, such as the inability to flexibly adjust the stroke, adapt to different product specifications, or the difficulty in adjusting the stroke during mold maintenance. The detachable connection facilitates the replacement and adjustment of the outer limit block, and the multi-position design of the vertical limiting part can precisely control the movement range of the end core-pulling seat. This not only adapts to the production needs of integrated products of different sizes but also allows for quick stroke adjustment during mold maintenance, improving the mold's versatility and maintenance convenience.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An injection mold for integral molding of an automotive dashboard and airbag frame, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that, A forming cavity is provided between the upper template (1) and the lower template (2). A forming insert (3) is provided on the lower template (2). End side pulling mechanisms (4) are symmetrically provided on the left and right sides of the lower template (2). An airbag frame forming groove (5) is provided on the front side of the forming insert (3). A front core pulling mechanism (6) corresponding to the airbag frame forming groove (5) is provided on the front side of the lower template (2). The front core-pulling mechanism (6) includes a front core-pulling seat (7) that is inclined and slidably connected to the lower template (2). The inner end of the front core-pulling seat (7) is fixedly connected to a movable insert (8) that can be inserted into the airbag frame forming groove (5) and combined with the airbag frame forming groove (5) to form an airbag frame forming cavity. The lower template (2) is also provided with an insert driving assembly.

2. The integrated injection mold for the automotive dashboard and airbag frame according to claim 1, characterized in that, The movable insert (8) is also provided with an air-assisted demolding structure (9).

3. The integrated injection mold for the automotive dashboard and airbag frame according to claim 2, characterized in that, The gas-assisted demolding structure (9) includes a gas-assisted flow channel (10) disposed inside the movable insert (8) and having an air outlet on the side of the movable insert (8), and a valve is provided at the air outlet of the gas-assisted flow channel (10).

4. The integrated injection mold for the automotive dashboard and airbag frame according to claim 3, characterized in that, The insert drive assembly includes a driver mounting base (11) fixed on the lower template (2), and a linear driver (12) that can drive the movable insert (8) to move along the inclined direction of the airbag frame forming groove (5) is obliquely fixed on the driver mounting base (11).

5. The integrated injection mold for the automotive dashboard and airbag frame according to claim 4, characterized in that, The driver mounting base (11) is provided with an air auxiliary connector (13), and the inner end of the air auxiliary connector (13) is connected to the air inlet of the air auxiliary flow channel (10) through a hose.

6. The integrated injection mold for the automotive dashboard and airbag frame according to claim 5, characterized in that, The end side pulling mechanism (4) includes an end core pulling seat (14) that is horizontally arranged and slidably connected to the lower template (2). The inner end of the end core pulling seat (14) is provided with a side insert (15) that abuts against the end of the forming insert (3). It also includes a driving structure arranged on the upper template (1).

7. The injection mold for the integrated molding of the automotive dashboard and airbag frame according to claim 6, characterized in that, The drive structure includes two drive rods (16) that are tilted and fixed on the upper template (1). The bottom end of the drive rod (16) is inserted into the end core pull seat (14) and slidably connected to the end core pull seat (14).

8. The integrated injection mold for the automotive dashboard and airbag frame according to claim 7, characterized in that, The lower template (2) is also provided with an outer limiting block (17) corresponding to the end core-pulling seat (14). The outer limiting block (17) is located outside the end core-pulling seat (14). The outer limiting block (17) is detachably connected to the lower template (2) by screws. The outer limiting block (17) has a stepped structure and at least two vertical limiting parts (18) at the inner end of the outer limiting block (17).

9. The integrated injection mold for the automotive dashboard and airbag frame according to claim 8, characterized in that, The lower template (2) is also provided with a combined ejection mechanism. The combined ejection mechanism includes a top plate (19) provided on the lower side of the lower template (2). The top plate (19) is provided with several inclined ejector blocks (20) near the front side of the forming insert (3). The inclined ejector blocks (20) are connected to the top plate (19) through inclined ejector rods. The top plate (19) is provided with several straight ejector rods (21) near the rear side of the forming insert (3).

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