A molding equipment for PP composite sheet for automotive interior trim

By designing a hydraulic and cylinder-driven unloading mechanism, the problem of requiring manual removal of interior panels in existing equipment was solved, realizing automated ejection of interior panels and improving production efficiency.

CN224275877UActive Publication Date: 2026-05-26JIANGSU WELKE AUTOMOTIVE INTERIOR PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU WELKE AUTOMOTIVE INTERIOR PARTS CO LTD
Filing Date
2025-06-17
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing automotive interior PP panel molding equipment requires manual removal of the panels using tools after molding, which affects the continuity of injection molding operations and leads to reduced production efficiency.

Method used

A composite sheet molding equipment for automotive interior PP panels was designed, which includes molding, unloading, and ejection mechanisms. The unloading mechanism, driven by hydraulics and cylinders, allows the molded interior panels to automatically slide into the receiving groove, avoiding manual intervention.

Benefits of technology

It enables automated ejection of interior trim panels, improving production efficiency, reducing manual intervention, and ensuring the continuity of injection molding operations.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224275877U_ABST
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Abstract

This utility model discloses a molding equipment for PP composite sheets of automotive interior panels, relating to the field of automotive tooling technology. The equipment includes a mounting platform, a molding mechanism, a unloading mechanism, and an ejection mechanism. The mounting platform is a double-layer platform. The molding mechanism includes a top mold and a bottom mold. The unloading mechanism includes a rotatable unloading platform. The bottom mold is fixed to the upper surface of the unloading platform. The second layer of the mounting platform has a receiving groove corresponding to the unloading platform. After the PP interior panel is hydraulically molded, the ejector rod in the ejection mechanism ejects the PP interior panel from the bottom mold. Then, the unloading cylinder in the unloading mechanism tilts the entire bottom mold to the right, causing the PP interior panel, which is still warm and difficult to remove manually, to slide to the right into the receiving groove. This allows the equipment to quickly proceed to the next molding operation, improving molding efficiency.
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Description

Technical Field

[0001] This utility model relates to the technical field of automotive tooling, specifically to a molding equipment for automotive interior PP board composite sheet. Background Technology

[0002] Automotive interior composite PP sheet is a high-performance material with advantages such as lightweight, scratch resistance, wear resistance, corrosion resistance, and environmental friendliness. It has become an important material in the automotive interior field and is widely used in the production of automotive interior parts.

[0003] Composite PP sheets have good plasticity and are suitable for various processing methods such as extrusion, injection molding, and blow molding. Automotive interior panels are more complex and are mainly manufactured by injection molding. Although existing molding equipment is equipped with an ejection mechanism to remove the interior panels after molding, the panels still remain on the mold after ejection and need to be removed manually with tools, which affects the continuity of injection molding operations and reduces production efficiency. Utility Model Content

[0004] This invention provides a molding equipment for automotive interior PP composite sheet, which has the advantage of being able to quickly remove the molded interior sheet from the mold, thus solving the problem that existing molding equipment requires manual removal with tools, affecting the continuity of injection molding operations and leading to reduced production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding equipment for automotive interior PP panel composite sheets, including a mounting platform, a molding mechanism, a unloading mechanism, and an ejection mechanism, wherein:

[0006] The mounting platform is a double-layer platform, and the forming mechanism includes a top mold driven by a hydraulic system and a fixed bottom mold, with the bottom mold located on the second layer of the mounting platform;

[0007] The unloading mechanism includes an unloading platform located on the second layer of the mounting platform and rotatable by a cylinder. The bottom mold is fixed on the upper surface of the unloading platform, and the second layer of the mounting platform is provided with a receiving plate groove corresponding to the unloading platform.

[0008] The ejection mechanism is located at the bottom of the mounting platform and is used to eject the PP interior trim panel formed in the bottom mold.

[0009] As a preferred technical solution of this utility model, the second layer of the mounting platform is symmetrically equipped with rotating seats, the rotating seats are located at both ends of the right side of the unloading platform, the right side of the rotating seats is rotatably connected to the unloading platform through shaft holes, and the second layer of the mounting platform is provided with a rotating groove corresponding to the right side of the unloading platform.

[0010] As a preferred technical solution of this utility model, the bottom of the mounting platform is equipped with a mounting base, and the top left side of the mounting base is symmetrically equipped with an upward unloading cylinder. The output rod of the unloading cylinder is equipped with a lifting platform, and the top of the lifting platform is equipped with a transmission frame that cooperates with the unloading platform.

[0011] As a preferred technical solution of this utility model, a transmission port is provided on the left side of the second layer of the mounting platform, and the lifting platform and the transmission frame are movably connected to the transmission port. A transmission groove is provided on the left side of the bottom of the unloading platform. The transmission frame is a symmetrically arranged frame with a top parallel to the cylinder. The transmission frame and the transmission groove are movably connected and cooperate with each other.

[0012] As a preferred technical solution of this utility model, the mounting platform is provided with a plate-removing port on the side near the plate-receiving groove, and the second layer of the mounting platform is symmetrically equipped with anti-fall baffles on both sides of the plate-receiving groove.

[0013] As a preferred technical solution of this utility model, the ejection mechanism includes ejection cylinders symmetrically installed on the upper end of the mounting base. A limiting platform is installed at the output end of the ejection cylinder. A limiting frame is installed at the bottom of the second layer of the mounting base. The limiting platform and the limiting frame are movably connected. Multiple ejector rods extending to the bottom mold are installed at the bottom of the limiting platform.

[0014] As a preferred embodiment of this utility model, a downward-facing hydraulic cylinder is installed on the top of the mounting platform, and the output rod of the hydraulic cylinder is fixedly connected to the top of the top mold. The top mold and the bottom mold are perpendicularly corresponding and cooperate with each other.

[0015] Compared with the prior art, this utility model provides a molding equipment for automotive interior PP board composite sheets, which has the following beneficial effects:

[0016] In this invention, after the PP interior trim panel is hydraulically formed, and after the top mold resets upward and the bottom mold separates, the ejector rod in the ejection mechanism ejects the PP interior trim panel from the bottom mold. Then, the unloading cylinder in the unloading mechanism drives the entire bottom mold to tilt to the right. This causes the PP interior trim panel, which is still at a certain temperature on the bottom mold and is inconvenient to remove manually, to slide to the right into the receiving groove. It does not need to be removed manually, allowing the equipment to quickly proceed to the next molding operation and improving the molding efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural diagram of the mounting platform of this utility model;

[0019] Figure 3 This is a schematic diagram of the unloading mechanism and ejection mechanism of this utility model;

[0020] Figure 4 This is an internal view of the mounting platform of this utility model;

[0021] Figure 5 This is a schematic diagram showing the connection between the transmission frame and the unloading platform of this utility model.

[0022] In the diagram: 1. Mounting platform; 11. Plate receiving groove; 12. Plate taking port; 13. Anti-fall baffle; 14. Mounting seat; 15. Transmission port; 16. Rotary groove; 2. Forming mechanism; 21. Hydraulic cylinder; 22. Top mold; 23. Bottom mold; 3. Unloading mechanism; 31. Unloading platform; 311. Transmission groove; 32. Unloading cylinder; 33. Lifting platform; 331. Transmission frame; 34. Rotating seat; 4. Ejection mechanism; 41. Ejection cylinder; 42. Limit frame; 43. Limiting platform; 44. Ejector rod. Detailed Implementation

[0023] 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. Example 1

[0024] Please see the appendix Figures 1-5 This utility model discloses a molding equipment for PP composite sheet for automotive interiors, including a mounting platform 1, a molding mechanism 2, a unloading mechanism 3, and an ejection mechanism 4, wherein:

[0025] Mounting platform 1 is a double-layer platform. The molding mechanism 2 includes a top mold 22 driven by a hydraulic system and a fixed bottom mold 23. The bottom mold 23 is set on the second layer of mounting platform 1.

[0026] The unloading mechanism 3 includes an unloading platform 31 located on the second layer of the mounting platform 1 and rotatable by a cylinder. The bottom mold 23 is fixed on the upper surface of the unloading platform 31. The second layer of the mounting platform 1 is provided with a receiving plate groove 11 corresponding to the unloading platform 31.

[0027] The ejection mechanism 4 is located at the bottom of the mounting platform 1 and is used to eject the PP interior panel formed in the bottom mold 23.

[0028] Furthermore, the second layer of the mounting platform 1 is symmetrically equipped with rotating seats 34. The rotating seats 34 are located at both ends on the right side of the unloading platform 31. The right side of the rotating seats 34 is rotatably connected to the unloading platform 31 through shaft holes. The second layer of the mounting platform 1 is provided with rotating grooves 16 corresponding to the right side of the unloading platform 31.

[0029] Specifically, by rotating the mounting base 14, the unloading platform 31 can be tilted and rotated to the right, allowing the top PP interior panel to slide to the right, while the bottom rotating groove 16 can prevent the unloading platform 31 from getting stuck when rotating.

[0030] Furthermore, a mounting base 14 is installed at the bottom of the mounting platform 1. A discharge cylinder 32 facing upward is symmetrically installed on the top left side of the mounting base 14. A lifting platform 33 is installed on the output rod of the discharge cylinder 32. A transmission frame 331 cooperating with the discharge platform 31 is installed on the top of the lifting platform 33. A transmission port 15 is opened on the left side of the second layer of the mounting platform 1. The lifting platform 33 and the transmission frame 331 are both movably connected to the transmission port 15. A transmission groove 311 is opened on the bottom left side of the discharge platform 31. The transmission frame 331 is a symmetrically arranged frame with a parallel top facing a cylinder. The transmission frame 331 is movably connected and cooperates with the transmission groove 311.

[0031] Specifically, the unloading cylinder 32 is activated, which drives the lifting platform 33 to move upward. The lifting platform 33 drives the transmission frame 331 to move upward. The transmission frame 331 lifts the left side of the unloading platform 31 upward, causing the unloading platform 31 to tilt and rotate to the right. The unloading platform 31 drives the bottom mold 23 to tilt and rotate to the right. At this time, the PP interior panel on the top of the bottom mold 23 slides to the right into the receiving plate groove 11. Then the unloading cylinder 32 is closed, causing the transmission frame 331 to move downward and reset. The unloading platform 31 and the bottom mold 23 rotate and reset to a horizontal state, at which point the next molding operation can be carried out.

[0032] It should be noted that before unloading, the ejector rod 44 needs to be moved downwards to disengage from the bottom mold 23 and the unloading platform 31 to avoid jamming the unloading platform 31 and preventing it from rotating.

[0033] Furthermore, the mounting platform 1 is provided with a plate-removing port 12 on the side near the plate-receiving groove 11, and the second layer of the mounting platform 1 is symmetrically equipped with anti-fall baffles 13 on both sides of the plate-receiving groove 11.

[0034] Specifically, the anti-fall baffle 13 can prevent the PP interior panel from falling off the side of the mounting platform 1 and being damaged during the process of sliding to the right. After the PP interior panel has completely cooled down, the operator can take out the PP interior panel through the panel removal port 12 for transfer or storage. Example 2

[0035] Based on the above embodiment one, please refer to the appendix. Figure 3 The ejection mechanism 4 includes ejection cylinders 41 symmetrically mounted on the upper end of the mounting base 14. A limiting platform 43 is installed at the output end of the ejection cylinder 41. A limiting frame 42 is installed at the bottom of the second layer of the mounting base 1. The limiting platform 43 is movably connected to the limiting frame 42. Multiple ejector rods 44 extending to the bottom mold 23 are installed at the bottom of the limiting platform 43. The ejector rods 44 pass through the limiting frame 42, the mounting base 1, the unloading platform 31 and the bottom mold 23, and are movably connected to the aforementioned components that pass through them.

[0036] Furthermore, a downward-facing hydraulic cylinder 21 is installed on the top of the mounting platform 1. The output rod of the hydraulic cylinder 21 is fixedly connected to the top of the top mold 22. The top mold 22 and the bottom mold 23 are vertically aligned and cooperate with each other.

[0037] In this embodiment, after the raw material is injected into the bottom mold 23, the hydraulic cylinder 21 is activated. The hydraulic cylinder 21 drives the top mold 22 to move downwards to close with the bottom mold 23. The pressure on the top surface causes the raw material in the bottom mold 23 to be pressed into a PP interior panel of a specific shape. After pressing for a period of time until the PP interior panel is stable, the hydraulic cylinder 21 is closed to separate the top mold 22 from the bottom mold 23 and move upwards to reset. Then, the ejector cylinder is activated. The ejector cylinder drives the limiting platform 43 to move upwards. The limiting platform 43 drives the ejector rod 44 to move upwards. The ejector rod 44 pushes the PP interior panel formed in the bottom mold 23 upwards out of the bottom mold 23. At this time, the PP interior panel is located at the upper end of the bottom mold 23.

[0038] The working principle and usage process of this utility model are as follows: When the molding operation is carried out, after the raw material is injected into the bottom mold 23, the hydraulic cylinder 21 is started. The hydraulic cylinder 21 drives the top mold 22 to move downward to close with the bottom mold 23. The pressure on the top surface makes the raw material in the bottom mold 23 pressed into a PP interior panel of a specific shape. After pressing for a period of time until the PP interior panel is stable, the hydraulic cylinder 21 is closed to separate the top mold 22 from the bottom mold 23 and move upward to reset.

[0039] At this time, the ejector cylinder is activated, which drives the limiting platform 43 to move upward. The limiting platform 43 drives the ejector rod 44 to move upward. The ejector rod 44 pushes the PP interior trim panel formed in the bottom mold 23 upward out of the bottom mold 23. At this time, the PP interior trim panel is located at the upper end of the bottom mold 23. Then, the ejector cylinder is closed, and the ejector rod 44 moves downward. Then, the unloading cylinder 32 is activated, which drives the lifting platform 33 to move upward. The lifting platform 33 drives the transmission frame 331 to move upward. The transmission frame 331 lifts the left side of the unloading platform 31 upward, causing the unloading platform 31 to tilt and rotate to the right. The unloading platform 31 drives the bottom mold 23 to tilt and rotate to the right. At this time, the PP interior trim panel at the top of the bottom mold 23 slides to the right into the receiving plate groove 11. Then, the unloading cylinder 32 is closed, and the transmission frame 331 moves downward to reset. The unloading platform 31 and the bottom mold 23 rotate and reset to a horizontal state. At this time, the next molding operation can be carried out.

Claims

1. An automotive interior PP sheet composite sheet forming apparatus comprising a mounting table (1), characterized in that, It also includes a forming mechanism (2), a unloading mechanism (3), and an ejection mechanism (4), wherein: The mounting platform (1) is a double-layer platform, and the forming mechanism (2) includes a top mold (22) driven by a hydraulic system and a fixed bottom mold (23). The bottom mold (23) is set on the second layer of the mounting platform (1). The unloading mechanism (3) includes an unloading platform (31) located on the second layer of the mounting platform (1) and rotatable by a cylinder. The bottom mold (23) is fixed on the upper surface of the unloading platform (31). The second layer of the mounting platform (1) is provided with a receiving plate groove (11) corresponding to the unloading platform (31). The ejection mechanism (4) is located at the bottom of the mounting platform (1) and is used to eject the PP interior panel formed in the bottom mold (23).

2. The automotive interior PP sheet composite sheet forming apparatus according to claim 1, characterized in that: The second layer of the mounting platform (1) is symmetrically equipped with rotating seats (34). The rotating seats (34) are located at both ends on the right side of the unloading platform (31). The right side of the rotating seats (34) is rotatably connected to the unloading platform (31) through shaft holes. The second layer of the mounting platform (1) is provided with a rotating groove (16) corresponding to the right side of the unloading platform (31).

3. The automotive interior PP sheet composite sheet forming apparatus according to claim 2, characterized in that: The mounting platform (1) has a mounting base (14) installed at the bottom. The mounting base (14) has an upward-facing unloading cylinder (32) symmetrically installed on the top left side. The output rod of the unloading cylinder (32) is equipped with a lifting platform (33). The top of the lifting platform (33) is equipped with a transmission frame (331) that cooperates with the unloading platform (31).

4. The automotive interior PP sheet composite sheet forming apparatus according to claim 3, characterized in that: The second layer of the installation platform (1) has a transmission port (15) on the left side. The lifting platform (33) and the transmission frame (331) are movably connected to the transmission port (15). The bottom left side of the unloading platform (31) has a transmission groove (311). The transmission frame (331) is a symmetrically arranged frame with a parallel top facing the cylinder. The transmission frame (331) is movably connected to and cooperates with the transmission groove (311).

5. The automotive interior PP board composite sheet forming equipment according to claim 4, characterized in that: The mounting platform (1) has a plate-removing port (12) on the side near the plate-receiving groove (11), and the second layer of the mounting platform (1) is symmetrically equipped with anti-fall baffles (13) on both sides of the plate-receiving groove (11).

6. The automotive interior PP board composite sheet forming equipment according to claim 1, characterized in that: The ejection mechanism (4) includes ejection cylinders (41) symmetrically installed on the upper end of the mounting base (14). A limiting platform (43) is installed at the output end of the ejection cylinder (41). A limiting frame (42) is installed at the bottom of the second layer of the mounting base (1). The limiting platform (43) is movably connected to the limiting frame (42). Multiple ejection rods (44) extending to the bottom mold (23) are installed at the bottom of the limiting platform (43).

7. The automotive interior PP board composite sheet forming equipment according to claim 6, characterized in that: The mounting platform (1) is equipped with a downward-facing hydraulic cylinder (21) on its top. The output rod of the hydraulic cylinder (21) is fixedly connected to the top of the top mold (22). The top mold (22) and the bottom mold (23) are vertically aligned and cooperate with each other.