Foam forming device for steering wheel assembly

Abstract

The utility model provides a steering wheel assembly foam forming device, which relates to the technical field of steering wheel foam forming and comprises a forming base, a first die holder and a second die holder, the first die holder and the second die holder are symmetrically arranged above the forming base, and the second die holder is connected with a die assembly driving mechanism. First half mold cores are symmetrically and detachably arranged in a mold core cavity of the first mold base, second half mold cores are symmetrically and detachably arranged in a mold core cavity of the second mold base, a first groove is formed in one set of first half mold cores and communicates with the foaming cavity, and a second groove matched with the first groove in position is formed in the first mold base and communicates with the foaming cavity. A pressure sensor is detachably arranged in the second groove; according to the utility model, the first half mold core is symmetrically and detachably arranged in the mold core cavity of the first mold base, and the second half mold core is symmetrically and detachably arranged in the mold core cavity of the second mold base, so that when the first half mold core and the second half mold core are damaged, single disassembly and replacement can be realized, and overall replacement is not needed.

Description

Technical Field

[0001] This utility model relates to the field of steering wheel foam molding technology, and in particular to a steering wheel assembly foam molding device. Background Technology

[0002] Foaming molds are plastic foaming molds. In the general operation of foaming molds, foaming resin is usually directly filled into the mold, heated and melted to form a gas-liquid saturated solution. Then, through nucleation, a large number of tiny bubble nuclei are formed. As the bubble nuclei grow, the finished foam plastic part is finally produced.

[0003] Specifically, regarding the existing steering wheel assembly foaming molding equipment, its component structure is generally divided into an upper mold and a lower mold. Before the foaming operation, the mold is cleaned, and a release agent is sprayed on the corresponding positions such as the mold cavity. Then, the mold is closed. After the upper and lower molds are closed, injection molding and foaming are carried out in the mold cavity, and pressure is maintained and cured to reliably shape the steering wheel in the mold cavity. Finally, the mold is opened so that the molded steering wheel can be taken out.

[0004] The existing steering wheel assembly foam molding device (i.e., steering wheel assembly foam molding mold) can meet the production requirements of steering wheel injection foam molding, but its molding cavity is formed directly on the upper and lower mold bases. When the molding cavity on the upper and lower molds is partially damaged, the entire mold needs to be replaced, which is not conducive to cost saving. Moreover, the mold cannot be used to mold steering wheel assemblies of different sizes by changing the mold core, resulting in low flexibility. Therefore, this utility model proposes a steering wheel assembly foam molding device to solve the shortcomings of the existing technology. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a steering wheel assembly foaming molding device. By symmetrically and detachably arranging a first half-mold core in the mold core cavity of a first mold base, and symmetrically and detachably arranging a second half-mold core in the mold core cavity of a second mold base, when the first half-mold core and the second half-mold core are damaged, they can be individually disassembled and replaced without the need for overall replacement.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A steering wheel assembly foam molding device includes a molding base, a first mold base, and a second mold base. The first mold base and the second mold base are symmetrically arranged above the molding base. A mold closing drive mechanism is provided on the molding base. The second mold base is connected to the mold closing drive mechanism. Both the first mold base and the second mold base are provided with a mold core cavity. A first half mold core is symmetrically and detachably provided in the mold core cavity of the first mold base. A second half mold core is symmetrically and detachably provided in the mold core cavity of the second mold base. Both the first half mold core and the second half mold core are provided with a lifting groove. A first locking bolt adapted to the first half mold core is provided on the top of the first mold base. A second locking bolt adapted to the second half mold core is provided on the top of the second mold base. Both the first half mold core and the second half mold core are provided with a foaming cavity.

[0008] A first groove is provided on a set of first half mold cores, the first groove is connected to the foaming cavity, a second groove is provided on the first mold base that is adapted to the position of the first groove, a pressure sensor is detachably provided inside the second groove, and the probe end of the pressure sensor is located inside the first groove.

[0009] A further improvement is that the top of the first mold base is provided with a first semi-circular injection channel, and the top of the second mold base is provided with a second semi-circular injection channel that is adapted to the first semi-circular injection channel.

[0010] A further improvement is that: each of the two first half mold cores is provided with a first connecting channel adapted to the position of the first semicircular injection channel, and each of the two first half mold cores is provided with a second connecting channel adapted to the position of the second semicircular injection channel.

[0011] A further improvement is that both the first connecting channel and the second connecting channel are connected to the foaming chamber, and the radii of the first connecting channel, the second connecting channel, the first semicircular injection channel, and the second semicircular injection channel are the same.

[0012] A further improvement is that the mold closing drive mechanism includes a drive screw, a movable seat, and a guide seat. The drive screw is rotatably mounted on the molding base. Guide grooves are provided on the top of the molding base on both sides of the drive screw. The movable seat is provided at the bottom of the second mold base. Guide seats are provided on both sides of the movable seat. The movable seat is threadedly connected to the drive screw, and the guide seat is slidably connected to the guide groove.

[0013] A further improvement is that: a first connecting plate is provided on the rear side wall of the first mold base, and a second connecting plate is provided on the rear side wall of the second mold base. The first connecting plate has a first connecting hole symmetrically provided at both ends, and the second connecting plate has a second connecting hole symmetrically provided at both ends. The first connecting hole and the second connecting hole are locked together by a connecting screw and a nut.

[0014] The beneficial effects of this utility model are as follows: By symmetrically and detachably arranging the first half mold core in the mold core cavity of the first mold base, and symmetrically and detachably arranging the second half mold core in the mold core cavity of the second mold base, when the first half mold core and the second half mold core are damaged, they can be disassembled and replaced individually without the need for overall replacement, which is highly economical; and the detachable first half mold core and the second half mold core can be replaced with mold cores with different foaming cavities, while the rest of the device structure can be retained and used, making the device highly flexible and adaptable.

[0015] This invention enables the monitoring of pressure within the foaming cavity by setting a first groove on a set of first half mold cores and a pressure sensor in a second groove on a first mold base. This allows for real-time dynamic adjustment of the cavity pressure based on the expansion state of the foaming material, ensuring a smooth foaming process and improving the foaming quality of the steering wheel assembly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the foam molding device for the steering wheel assembly of this utility model in the unclosed state.

[0017] Figure 2 This is a three-dimensional structural diagram of the foaming molding device for the steering wheel assembly of this utility model in the mold-closed state.

[0018] Figure 3 This is a three-dimensional schematic diagram of the first mold base structure of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the second mold base structure of this utility model.

[0020] The components are as follows: 1. Molding base; 2. First mold base; 3. Second mold base; 4. Mold closing drive mechanism; 401. Drive screw; 402. Moving seat; 403. Guide seat; 404. Guide groove; 5. First half mold core; 6. Second half mold core; 7. First locking bolt; 8. Second locking bolt; 9. Foaming cavity; 10. Pressure sensor; 11. First semi-circular injection channel; 12. Second semi-circular injection channel; 13. First connecting channel; 14. Second connecting channel; 15. First connecting plate; 16. Second connecting plate; 17. First connecting hole; 18. Second connecting hole; 19. Connecting screw; 20. Nut; 21. Lifting groove. Detailed Implementation

[0021] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. Example 1

[0022] according to Figure 1-4As shown, this embodiment proposes a foaming molding device for a steering wheel assembly, including a molding base 1, a first mold base 2, and a second mold base 3. The first mold base 2 and the second mold base 3 are symmetrically arranged above the molding base 1. A mold closing drive mechanism 4 is provided on the molding base 1, and the second mold base 3 is connected to the mold closing drive mechanism 4. Both the first mold base 2 and the second mold base 3 have mold core cavities. A first half-mold core 5 is symmetrically and detachably arranged within the mold core cavity of the first mold base 2, and a second half-mold core 6 is symmetrically and detachably arranged within the mold core cavity of the second mold base 3. The first half-mold core 5 and the second half-mold core 6... Each of the first and second mold bases is provided with a lifting groove 21. The top of the first mold base 2 is provided with a first locking bolt 7 that is adapted to the first half mold core 5. The top of the second mold base 3 is provided with a second locking bolt 8 that is adapted to the second half mold core 6. Both the first half mold core 5 and the second half mold core 6 are provided with a foaming cavity 9. A first groove is provided on a set of the first half mold core 5. The first groove is connected to the foaming cavity 9. The first mold base 2 is provided with a second groove that is adapted to the position of the first groove. A pressure sensor 10 is detachably provided inside the second groove. The probe end of the pressure sensor 10 is located inside the first groove.

[0023] During the foaming process of this steering wheel assembly foaming molding device, the magnesium alloy frame of the car steering wheel is placed into the foaming cavities 9 on the two first half-mold cores 5. Then, the mold closing drive mechanism 4 drives the second mold base 3 to approach the first mold base 2 to complete the mold closing. After mold closing, the two second half-mold cores 6 and the two first half-mold cores 5 together form a complete foaming chamber for steering wheel assembly foaming molding. During the foaming molding process, the pressure in the foaming chamber can be monitored by the pressure sensor 10, which facilitates timely adjustment of the chamber pressure. When the first half-mold cores 5 and the second half-mold cores 6 need to be replaced due to damage or replacement, the first locking bolt 7 and the second locking bolt 8 can be removed, and then the first half-mold cores 5 and the second half-mold cores 6 can be lifted from the lifting slot 21 for replacement.

[0024] The first mold base 2 has a first semi-circular injection channel 11 at its top, and the second mold base 3 has a second semi-circular injection channel 12 adapted to the first semi-circular injection channel 11 at its top. Both first mold core halves 5 have first connecting channels 13 adapted to the position of the first semi-circular injection channel 11, and both first mold core halves 5 have second connecting channels 14 adapted to the position of the second semi-circular injection channel 12. The first connecting channels 13 and the second connecting channels 14 are both connected to the foaming cavity 9, and the radii of the first connecting channels 13, the second connecting channels 14, the first semi-circular injection channel 11, and the second semi-circular injection channel 12 are the same. After the first mold base 2 and the second mold base 3 are closed, the first semi-circular injection channel 11, the second semi-circular injection channel 12, the first connecting channel 13, and the second connecting channel 14 constitute a complete injection channel, through which foaming material is injected for molding.

[0025] This invention features a first half-mold core 5 symmetrically and detachably arranged within the mold core cavity of the first mold base 2, and a second half-mold core 6 symmetrically and detachably arranged within the mold core cavity of the second mold base 3. When the first half-mold core 5 or the second half-mold core 6 is damaged, it can be individually disassembled and replaced without requiring overall replacement, resulting in high economic efficiency. Furthermore, the detachable first half-mold core 5 and the second half-mold core 6 can be replaced with mold cores having different foaming cavities 9, while the remaining structure of the device can be retained, making the device highly flexible and adaptable. This invention also features a pressure sensor 10 installed in a first groove on a set of the first half-mold cores 5 and in a second groove on the first mold base 2. This allows for pressure monitoring within the foaming cavity 9 using the pressure sensor 10, facilitating real-time dynamic adjustment of the cavity pressure based on the expansion state of the foaming material, ensuring smooth foaming process, and improving the foaming quality of the steering wheel assembly. Example 2

[0026] according to Figure 1-4 As shown, this embodiment proposes a foaming molding device for a steering wheel assembly, including a molding base 1, a first mold base 2, and a second mold base 3. The first mold base 2 and the second mold base 3 are symmetrically arranged above the molding base 1. A mold closing drive mechanism 4 is provided on the molding base 1, and the second mold base 3 is connected to the mold closing drive mechanism 4. Both the first mold base 2 and the second mold base 3 have mold core cavities. A first half-mold core 5 is symmetrically and detachably arranged within the mold core cavity of the first mold base 2, and a second half-mold core 6 is symmetrically and detachably arranged within the mold core cavity of the second mold base 3. The first half-mold core 5 and the second half-mold core 6... Each of the first and second mold bases is provided with a lifting groove 21. The top of the first mold base 2 is provided with a first locking bolt 7 that is adapted to the first half mold core 5. The top of the second mold base 3 is provided with a second locking bolt 8 that is adapted to the second half mold core 6. Both the first half mold core 5 and the second half mold core 6 are provided with a foaming cavity 9. A first groove is provided on a set of the first half mold core 5. The first groove is connected to the foaming cavity 9. The first mold base 2 is provided with a second groove that is adapted to the position of the first groove. A pressure sensor 10 is detachably provided inside the second groove. The probe end of the pressure sensor 10 is located inside the first groove.

[0027] The mold closing drive mechanism 4 includes a drive screw 401, a movable seat 402, and a guide seat 403. The drive screw 401 is rotatably mounted on the molding base 1. Guide grooves 404 are provided on the top of the molding base 1 on both sides of the drive screw 401. The movable seat 402 is provided at the bottom of the second mold base 3. Guide seats 403 are provided on both sides of the movable seat 402. The movable seat 402 is threadedly connected to the drive screw 401, and the guide seats 403 are slidably connected to the guide grooves 404. This utility model can achieve stable and precise mold closing control by setting the mold closing drive mechanism 4. By driving the drive screw 401 to rotate, the second mold base 3 can move synchronously on the drive screw 401 and the guide grooves 404 through the movable seat 402 and the guide seat 403 respectively, so as to bring the second mold base 3 closer to and fit against one side of the first mold base 2.

[0028] The first mold base 2 has a first connecting plate 15 on its rear side wall, and the second mold base 3 has a second connecting plate 16 on its rear side wall. The first connecting plate 15 has symmetrically arranged first connecting holes 17 at both ends, and the second connecting plate 16 has symmetrically arranged second connecting holes 18 at both ends. The first connecting holes 17 and the second connecting holes 18 are locked together by a connecting screw 19 and a nut 20. This invention, by using the connecting screw 19 and nut 20, can further tighten the first mold base 2 and the second mold base 3, improving the tightness of the mold closing and thus enhancing the foaming quality.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steering wheel assembly foam molding apparatus characterized by: The utility model relates to a kind of injection molding machine, including forming base (1), first mould seat (2) and second mould seat (3), the first mould seat (2) and second mould seat (3) are symmetrically equipped on the forming base (1) top, clamping drive mechanism (4) is equipped on the forming base (1), the second mould seat (3) is connected with clamping drive mechanism (4), the first mould seat (2) and second mould seat (3) are equipped with mould core cavity on, the mould core cavity in the first mould seat (2) is symmetrically and detachably equipped with first half mould core (5), the mould core cavity in the second mould seat (3) is symmetrically and detachably equipped with second half mould core (6), first half mould core (5) and second half mould core (6) are equipped with lifting groove (21) on, the first mould seat (2) top is equipped with the first locking bolt (7) of adaptation with first half mould core (5), the second mould seat (3) top is equipped with the second locking bolt (8) of adaptation with second half mould core (6), first half mould core (5) and second half mould core (6) are equipped with foaming cavity (9) on; A set of first half mould core (5) is equipped with first groove, the first groove is communicated with foaming cavity (9), the first mould seat (2) is equipped with the second groove of position adaptation with first groove, the second groove is detachably equipped with pressure sensor (10) inside, the probe end of pressure sensor (10) is located inside first groove.

2. A steering wheel assembly foam molding apparatus according to claim 1, wherein: The first mould seat (2) top is equipped with first semicircular injection runner (11), and the second mould seat (3) top is equipped with second semicircular injection runner (12) adapted with the first semicircular injection runner (11).

3. A steering wheel assembly foam forming apparatus as defined in claim 2, wherein: Two first half mould cores (5) are each equipped with first connecting runner (13) adapted with the position of first semicircular injection runner (11), and two first half mould cores (5) are each equipped with second connecting runner (14) adapted with the position of second semicircular injection runner (12).

4. A steering wheel assembly foam forming apparatus as defined in claim 3, wherein: The first connecting runner (13) and second connecting runner (14) are communicated with the foaming cavity (9), and the first connecting runner (13), second connecting runner (14), first semicircular injection runner (11) and second semicircular injection runner (12) have the same radius.

5. The steering wheel assembly foam molding apparatus of claim 1, wherein: The clamping drive mechanism (4) includes drive screw (401), moving seat (402) and guide seat (403), the drive screw (401) is rotatably arranged on the forming base (1), the guide grooves (404) are arranged on the top of the forming base (1) on both sides of the drive screw (401), the moving seat (402) is arranged on the bottom of the second mould seat (3), the guide seats (403) are arranged on both sides of the moving seat (402), the moving seat (402) is threadedly connected with the drive screw (401), and the guide seats (403) are slidably connected with the guide grooves (404).

6. A steering wheel assembly foam forming apparatus as defined in claim 1, wherein: The first mold base (2) rear side wall is equipped with a first connecting plate (15), the second mold base (3) rear side wall is equipped with a second connecting plate (16), the both ends of the first connecting plate (15) are symmetrically equipped with a first connecting hole (17), the both ends of the second connecting plate (16) are symmetrically equipped with a second connecting hole (18), and the first connecting hole (17) and the second connecting hole (18) are locked through a connecting screw rod (19) and a nut (20).

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