Metal insert injection structure of automobile seat armrest

Abstract

The utility model discloses a kind of metal insert injection molding structures of automobile seat armrest, it is related to injection molding technical field, including workbench and lower mould component, the upper surface of workbench both sides is equipped with support plate, and transmission shaft is installed between support plate by bearing seat, the upper of transmission shaft is provided with support frame, and the upper surface of support frame is equipped with lower mould component, the upper of lower mould component is provided with upper mould component;The inner bottom of lower mould component is equipped with inner-embedded groove, and it is provided with ejection piece in inner-embedded groove, the lower of ejection piece is equipped with slide bar.This metal insert injection molding structure of automobile seat armrest, when injection molding, positive and negative motor drives transmission shaft and rotating block, drives support frame and lower mould component to swing left and right, makes the raw material of injection cavity evenly distributed, avoids local material shortage;After completing injection, upper mould component and lower mould component are adjusted to level, and level is checked by level gauge, flush block and connecting plate are aligned, and forming is carried out.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to a metal insert injection molding structure for an automotive seat armrest. Background Technology

[0002] As a core comfort feature and functional carrier for drivers and passengers, car seat armrests not only need to meet the comfort requirements of elbow support, but also need to integrate diverse functions such as cup holders, storage boxes, armrest angle adjustment, and multimedia control. Their structural strength, stability, and service life directly affect the driving experience and the overall quality of the vehicle.

[0003] Metal inserts, as key components for improving the structural performance of plastic parts, are widely used in the injection molding process of automotive seat armrests. Their core function is to tightly bond the metal insert to the plastic matrix through "injection molding overmolding," retaining the advantages of plastic materials such as lightweight, easy molding, and controllable cost, while leveraging the excellent mechanical strength, rigidity, and fatigue resistance of metal to reinforce key load-bearing areas of the armrest. The metal inserts are processed using injection molding equipment.

[0004] For example, Chinese utility model patent application number 202321703022.5 discloses an injection molding structure for a printer fastener, but its device still has certain defects.

[0005] During injection molding, raw materials tend to accumulate in the mold and are unevenly distributed, resulting in localized material shortages at the interface between the metal insert and the plastic substrate. This affects the tightness of the connection between the two, and over long-term use, uneven stress can easily cause the insert to loosen and the plastic to crack.

[0006] Therefore, we propose a metal insert injection molding structure for automotive seat armrests to address the problems mentioned above. Utility Model Content

[0007] The purpose of this utility model is to provide a metal insert injection molding structure for automobile seat armrests, in order to solve the problem mentioned in the background art that, during injection molding in the current market, raw materials tend to accumulate in the mold and are unevenly distributed, resulting in local material shortages at the bonding surface between the metal insert and the plastic substrate, affecting the tightness of the connection between the two, and causing the insert to loosen and the plastic to crack due to uneven stress during long-term use.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a metal insert injection molding structure for an automotive seat armrest, comprising a worktable and a lower mold assembly. Support plates are installed on both the front and rear sides of the upper surface of the worktable, and a drive shaft is installed between the support plates via a bearing seat. A support frame is provided above the drive shaft, and a lower mold assembly is installed on the upper surface of the support frame. An upper mold assembly is provided above the lower mold assembly.

[0009] The lower mold assembly has an inner groove at its bottom, and an ejector plate is provided in the inner groove. A slide rod is installed below the ejector plate.

[0010] Preferably, a forward and reverse motor is installed on the front surface of the front support plate, and the rear side of the forward and reverse motor is connected to the transmission shaft through the output shaft. A rotating block is installed on the transmission shaft and connected to the support frame. The left and right rotation angle of the forward and reverse motor is less than 40°.

[0011] With the above structural design, the forward and reverse motors drive the transmission shaft to rotate through the output shaft, and the rotating block on the transmission shaft synchronously drives the support frame and the lower mold assembly to swing left and right. After the injection molding material is injected into the cavity, the swing of the lower mold assembly makes the material evenly distributed, avoids local material shortage, and improves the injection molding quality.

[0012] Preferably, the upper surface of the upper mold assembly is provided with an injection port, and connecting plates are provided on both the left and right sides of the upper mold assembly. A top plate is provided above the connecting plates via a vertical plate, and an electric telescopic rod is provided on the lower surface of the top plate.

[0013] With the above structural design, before injection molding, the electric telescopic rod extends and pushes the upper mold assembly downward to precisely close with the lower mold assembly, providing a sealed cavity for injection molding and ensuring that the raw materials do not leak.

[0014] Preferably, there are two electric telescopic rods, and the electric telescopic rods are connected to the upper mold assembly, with the two electric telescopic rods controlled by the same controller.

[0015] The above structural design allows for simultaneous elongation or shortening, enabling the upper mold assembly to rise and fall smoothly; ensuring precise alignment and closure of the upper and lower mold assemblies, preventing uneven cavity gaps that could lead to material leakage or product molding defects.

[0016] Preferably, a level is installed on the front surface of the top plate, and leveling blocks are installed on both the left and right sides of the upper surface of the workbench, with the upper surface of the leveling blocks aligned with the upper surface of the connecting plate in a horizontal state.

[0017] With the above structural design, the level instrument is easy to adjust and calibrate, ensuring that the upper mold assembly and the lower mold assembly remain horizontal; the upper surface of the worktable's flush block is aligned with the horizontal connecting plate, providing a direct reference for the mold's level, avoiding uneven material distribution due to mold tilting during the molding process, and ensuring injection molding accuracy.

[0018] Preferably, a threaded rod is installed on the flush block, and a positioning groove is provided on the connecting plate. When the connecting plate is horizontal, the center line of the threaded rod coincides with the center line of the positioning groove.

[0019] With the above structural design, the rotating threaded rod connects to the connecting plate, and the overall structure is more stable when the upper and lower mold assemblies are horizontal.

[0020] Preferably, the slide rod passes through the support frame and the lower mold assembly, and the slide rod is slidably connected to the support frame and the lower mold assembly. A telescopic spring is installed on the lower surface of the support frame, and an anti-slip block is installed at the lower end of the slide rod. The anti-slip block is connected to the telescopic spring.

[0021] With the above structural design, after injection molding is completed and formed, pressing the slide bar upwards will cause the ejector plate to rise and eject the finished product from the inner groove; after releasing the slide bar, the telescopic spring will reset and cause the ejector plate and slide bar to return to the initial position, which is convenient for the next injection molding.

[0022] Compared with the prior art, the beneficial effects of this utility model are: the metal insert injection molding structure of the car seat armrest:

[0023] 1. Uniform material distribution enhances the bonding stability between the insert and the plastic matrix.

[0024] During injection molding, the forward and reverse motors drive the transmission shaft and rotating block to drive the support frame and lower mold assembly to swing left and right, so that the raw material injected into the cavity is evenly distributed and avoids local material shortage. After the injection is completed, the upper mold assembly and lower mold assembly are adjusted to be horizontal, and the level is checked by a level instrument to align the level block and connecting plate before molding.

[0025] 2. Precise mold positioning and convenient finished product ejection ensure production efficiency and quality.

[0026] The level of the top plate provides calibration for mold leveling. After the leveling block is aligned with the connecting plate, the rotating threaded rod is used for auxiliary fixing. After injection molding is completed, pressing the slide bar upwards can drive the ejector plate to eject the finished product. After releasing, the telescopic spring drives the ejector structure to reset. No complicated disassembly is required, which not only ensures the product molding accuracy, but also improves production continuity and operation convenience. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the present invention during material homogenization;

[0029] Figure 3 This is a schematic diagram of the lower surface structure of the support frame of this utility model;

[0030] Figure 4 This is a schematic diagram of the internal structure of the lower mold assembly of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure when the ejector plate of this utility model is lifted.

[0032] In the diagram: 1. Workbench; 2. Support plate; 3. Drive shaft; 4. Forward and reverse motor; 5. Rotating block; 6. Support frame; 7. Lower mold assembly; 8. Upper mold assembly; 9. Injection port; 10. Connecting plate; 11. Vertical plate; 12. Top plate; 13. Electric telescopic rod; 14. Level; 15. Flush block; 16. Threaded rod; 17. Inset groove; 18. Ejector plate; 19. Sliding rod; 20. Anti-slip block; 21. Telescopic spring. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1-5This utility model provides a technical solution: a metal insert injection molding structure for an automotive seat armrest, including a worktable 1, a support plate 2, a drive shaft 3, a forward and reverse motor 4, a rotating block 5, a support frame 6, a lower mold assembly 7, an upper mold assembly 8, an injection port 9, a connecting plate 10, a vertical plate 11, a top plate 12, an electric telescopic rod 13, a level 14, a flushing block 15, a threaded rod 16, an inner groove 17, an ejector plate 18, a sliding rod 19, an anti-slip block 20, and a telescopic spring 21. Support plates 2 are installed on both the front and rear sides of the upper surface of the worktable 1, and a drive shaft 3 is installed between the support plates 2 via bearing seats. A support frame 6 is provided above the drive shaft 3, and a lower mold assembly 7 is installed on the upper surface of the support frame 6. A forward and reverse motor 4 is mounted on the front surface of plate 2, and the rear side of the forward and reverse motor 4 is connected to the transmission shaft 3 via an output shaft. A rotating block 5 is mounted on the transmission shaft 3, and the rotating block 5 is connected to the support frame 6. The left and right rotation angle of the forward and reverse motor 4 is less than 40°. The forward and reverse motor 4 drives the transmission shaft 3 to rotate via the output shaft, and the rotating block 5 on the transmission shaft 3 synchronously drives the support frame 6 and the lower mold assembly 7 to swing left and right. After the injection molding material is injected into the cavity, the swinging of the lower mold assembly 7 makes the material evenly distributed, avoids local material shortages, and improves the injection molding quality. An upper mold assembly 8 is set above the lower mold assembly 7. An injection port 9 is mounted on the upper surface of the upper mold assembly 8, and connecting plates 10 are mounted on both the left and right sides of the upper mold assembly 8. A top plate 12 is installed via a vertical plate 11. An electric telescopic rod 13 is installed on the lower surface of the top plate 12. Before injection molding, the electric telescopic rod 13 extends to push the upper mold assembly 8 downwards, precisely closing with the lower mold assembly 7, providing a sealed cavity for injection molding and ensuring no material leakage. Two electric telescopic rods 13 are provided, and each is connected to the upper mold assembly 8. Both electric telescopic rods 13 are controlled by the same controller and can extend or retract synchronously, driving the upper mold assembly 8 to rise and fall smoothly. This ensures precise alignment and closure of the upper mold assembly 8 and the lower mold assembly 7, preventing uneven cavity clearance that could lead to material leakage or product molding defects. A level 14 is installed on the front surface of the top plate 12, and level 14 is installed on both the left and right sides of the upper surface of the worktable 1. There is a leveling block 15, the upper surface of which is aligned with the upper surface of the connecting plate 10 in a horizontal state. The level 14 is convenient for adjustment and calibration to ensure that the upper mold assembly 8 and the lower mold assembly 7 remain horizontal. The upper surface of the leveling block 15 on the worktable 1 is aligned with the connecting plate 10 in a horizontal state, providing a visual reference for the mold level and avoiding uneven material distribution due to mold tilt during the molding process, thus ensuring injection molding accuracy. A threaded rod 16 is installed on the leveling block 15, and a positioning groove is provided on the connecting plate 10. When the connecting plate 10 is horizontal, the center line of the threaded rod 16 coincides with the center line of the positioning groove. Rotating the threaded rod 16 connects it to the connecting plate 10. When the upper mold assembly 8 and the lower mold assembly 7 are horizontal, the overall structure is more stable.

[0035] The lower mold assembly 7 has an inner groove 17 at its bottom, and an ejector plate 18 is provided in the inner groove 17. A slide rod 19 is installed below the ejector plate 18. The slide rod 19 passes through the support frame 6 and the lower mold assembly 7 and is slidably connected to the support frame 6 and the lower mold assembly 7. A telescopic spring 21 is installed on the lower surface of the support frame 6. An anti-slide block 20 is installed at the lower end of the slide rod 19 and is connected to the telescopic spring 21. After injection molding is completed and formed, the slide rod 19 is pressed upward to drive the ejector plate 18 to rise and eject the finished product in the inner groove 17. After the slide rod 19 is released, the telescopic spring 21 resets and drives the ejector plate 18 and the slide rod 19 back to their initial positions for easy use in the next injection molding.

[0036] Working principle: When using the metal insert injection molding structure of this car seat armrest, firstly, before injection molding, the metal insert is placed into the lower mold assembly 7, and the two electric telescopic rods 13 are activated to push the upper mold assembly 8 downward to close with the lower mold assembly 7.

[0037] After the raw material is injected through the injection port 9, the forward and reverse motors 4 of the front support plate 2 are started. The output shaft drives the transmission shaft 3 and the rotating block 5, which in turn drives the support frame 6 and the lower mold assembly 7 to swing left and right, so that the raw material is evenly distributed and avoids local material shortage. After the injection is completed, the upper mold assembly 8 and the lower mold assembly 7 are adjusted to be horizontal, and the level is checked by the level instrument 14. The level block 15 is aligned with the connecting plate 10, and the threaded rod 16 is rotated to connect with the connecting plate 10, waiting for molding.

[0038] After injection molding, the electric telescopic rod 13 is activated to raise the upper mold assembly 8; pressing the slide rod 19 upwards causes the ejector plate 18 in the inner groove 17 to eject the finished product. After releasing the slide rod 19, the telescopic spring 21 under the support frame 6 causes the ejection structure to reset, and the anti-slide block 20 prevents the slide rod 19 from disengaging, thus completing a series of operations. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0039] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A metal insert injection molding structure for an automobile seat armrest, comprising a worktable (1) and a lower mold assembly (7), wherein support plates (2) are installed on both the front and rear sides of the upper surface of the worktable (1), and a drive shaft (3) is installed between the support plates (2) via bearing seats, characterized in that: A support frame (6) is provided above the drive shaft (3), and a lower mold assembly (7) is installed on the upper surface of the support frame (6), and an upper mold assembly (8) is provided above the lower mold assembly (7). The lower mold assembly (7) has an inner groove (17) at its bottom, and an ejector plate (18) is provided in the inner groove (17). A slide rod (19) is installed below the ejector plate (18).

2. The metal insert injection molding structure for a car seat armrest according to claim 1, characterized in that: A forward and reverse motor (4) is installed on the front surface of the support plate (2) on the front side, and the rear side of the forward and reverse motor (4) is connected to the transmission shaft (3) through the output shaft. A rotating block (5) is installed on the transmission shaft (3), and the rotating block (5) is connected to the support frame (6). The left and right rotation angle of the forward and reverse motor (4) is less than 40°.

3. The metal insert injection molding structure for a car seat armrest according to claim 1, characterized in that: The upper surface of the upper mold assembly (8) is equipped with an injection port (9), and connecting plates (10) are installed on both the left and right sides of the upper mold assembly (8). A top plate (12) is installed above the connecting plate (10) via a vertical plate (11), and an electric telescopic rod (13) is installed on the lower surface of the top plate (12).

4. The metal insert injection molding structure for a car seat armrest according to claim 3, characterized in that: Two electric telescopic rods (13) are provided, and the electric telescopic rods (13) are connected to the upper mold assembly (8). The two electric telescopic rods (13) are controlled by the same controller.

5. The metal insert injection molding structure of the automobile seat armrest according to claim 3, characterized in that: A level (14) is installed on the front surface of the top plate (12), and a leveling block (15) is installed on both the left and right sides of the upper surface of the workbench (1). The upper surface of the leveling block (15) is aligned with the upper surface of the connecting plate (10) in the horizontal state.

6. The metal insert injection molding structure for a car seat armrest according to claim 5, characterized in that: A threaded rod (16) is installed on the flush block (15), and a positioning groove is provided on the connecting plate (10). When the connecting plate (10) is horizontal, the center line of the threaded rod (16) coincides with the center line of the positioning groove.

7. The metal insert injection molding structure for a car seat armrest according to claim 1, characterized in that: The slide rod (19) passes through the support frame (6) and the lower mold assembly (7). The slide rod (19) is slidably connected to the support frame (6) and the lower mold assembly (7). A telescopic spring (21) is installed on the lower surface of the support frame (6). An anti-slide block (20) is installed at the lower end of the slide rod (19). The anti-slide block (20) is connected to the telescopic spring (21).

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