Automobile lightweight SMC door panel compression molding die

Abstract

The utility model belongs to mould technical field relates to a kind of automobile light weight SMC door panel mould pressing forming mould.The utility model, including top plate and bottom plate, door panel mould pressing upper die and door panel mould pressing lower die are equipped between the top plate and bottom plate, door panel forming protruding part is equipped in the door panel mould pressing lower die, door panel forming recess is equipped in the door panel mould pressing upper die.The utility model is synchronously formed in mould pressing process in the use process, and connection is more firm and reliable, the overall strength and stability of product are improved, the integrated molding of SMC door panel and connecting head is realized, the process of subsequent installation connecting head is saved, production efficiency is greatly improved, and artificial cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a molding die for lightweight SMC door panels for automobiles. Background Technology

[0002] With the rapid development of the automotive industry, lightweighting has become an important trend in automotive design and manufacturing. This not only reduces energy consumption but also improves vehicle handling performance. SMC (sheet molding compound) materials, due to their excellent properties such as light weight, high strength, and corrosion resistance, are widely used in the manufacture of automotive door panels and other components. In traditional SMC door panel molding processes, the door panel body and the connector are usually produced separately. That is, the door panel body is molded first, and then the connector is installed onto the door panel through subsequent processes such as welding and bolting. This production method has the following drawbacks: First, the process is cumbersome, resulting in low production efficiency and increased labor costs; second, the connection strength between the connector and the door panel body is difficult to guarantee, easily leading to loosening and detachment, affecting product quality; third, multiple processing steps lead to material waste, which does not meet the requirements of energy conservation and environmental protection. Therefore, there is an urgent need to design a lightweight SMC door panel molding die that can overcome the above defects.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an injection mold for one-time molding of lightweight composite automotive interior door panels [Application No.: 202011019077.5], which includes a fixed mold and a moving mold. The key feature is that at least one set of hydraulic clamping mechanisms is set between the fixed and moving molds of the injection mold. These hydraulic clamping mechanisms are used to clamp and fix the organic sheet material to be molded during the mold closing process. The advantage is that by setting at least one set of hydraulic clamping mechanisms between the fixed and moving molds of the injection mold to clamp and fix the organic sheet material to be molded during the mold closing process, the organic sheet material to be molded will not fall off after leaving the robotic arm of the injection molding machine during mold closing. After mold closing, the organic sheet material to be molded is formed between the moving and fixed molds of the injection mold. At this point, the lightweight composite automotive interior door panel can be completed simply by entering the injection molding program of the injection molding machine normally. However, this solution still cannot press and install the connectors together during the molding process, requiring additional steps, resulting in a cumbersome process and low production efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a lightweight SMC door panel molding die for automobiles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A lightweight SMC door panel molding die for automobiles includes a top plate and a bottom plate. An upper door panel molding die and a lower door panel molding die are provided between the top plate and the bottom plate. The lower door panel molding die has a door panel forming protrusion, and the upper door panel molding die has a door panel forming recess. The door panel forming protrusion and the door panel forming recess are positioned correspondingly and matched in shape. A lifting connecting plate that can reciprocate linearly in the vertical direction is provided below the lower door panel molding die. The lifting connecting plate has a straight ejector and a door panel embedded connector forming assembly, which are staggered.

[0006] In the aforementioned automotive lightweight SMC door panel molding die, the door panel embedded connector molding assembly includes several connecting rods disposed on a lifting connecting plate, the top of the connecting rods is equipped with an embedded connector head, and the connecting rods pass through the door panel molding protrusion.

[0007] In the aforementioned automotive lightweight SMC door panel molding die, the embedded connector head is provided with three parallel biting plates, and the cross-section of the biting plates is hexagonal.

[0008] In the aforementioned automotive lightweight SMC door panel molding die, two biting spaces are formed between the outer circle of the embedded connector and the three biting plates.

[0009] In the aforementioned automotive lightweight SMC door panel molding die, the top of the connecting rod is provided with an insert head, and the embedded connector has a hole that engages with the insert head. The diameter of the insert head is smaller than the diameter of the connecting rod.

[0010] In the aforementioned automotive lightweight SMC door panel molding die, the straight pusher includes several straight push rods disposed on the lifting connecting plate, and the straight push rods are parallel to each other with the connecting rods.

[0011] In the aforementioned automotive lightweight SMC door panel molding die, a cylinder is provided between the base plate and the lower door panel molding die for driving the lifting connecting plate to move up and down.

[0012] In the aforementioned automotive lightweight SMC door panel molding die, the door panel forming protrusion includes a door panel forming protrusion disposed in the lower mold of the door panel molding, and the straight push rod and the connecting rod respectively pass through the door panel forming protrusion.

[0013] In the aforementioned automotive lightweight SMC door panel molding die, the door panel forming recess includes a door panel forming cavity disposed in the upper mold of the door panel molding die, and the door panel forming cavity corresponds to the door panel forming protrusion in position and is matched in shape.

[0014] In the aforementioned automotive lightweight SMC door panel molding die, both the upper and lower door panel molding dies are equipped with cooling water systems.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. In the process of using this utility model, the connector and the SMC door panel are formed synchronously during the molding process, making the connection more firm and reliable, improving the overall strength and stability of the product, realizing the one-piece molding of the SMC door panel and the connector, eliminating the subsequent process of installing the connector, greatly improving production efficiency and reducing labor costs.

[0016] 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

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

[0018] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0019] Figure 3 This is a partial structural schematic diagram of the present invention.

[0020] Figure 4 This is a partial structural schematic diagram of another aspect of this utility model.

[0021] Figure 5 This is an exploded view of the molded assembly of the embedded connector in the door panel.

[0022] Figure 6 This is a structural diagram of the embedded connector.

[0023] Figure 7 This is a schematic diagram of the upper mold for door panel molding.

[0024] In the diagram: 1. Top plate; 2. Bottom plate; 3. Upper mold for door panel molding; 4. Lower mold for door panel molding; 5. Door panel forming protrusion; 6. Door panel forming recess; 7. Lifting connecting plate; 8. Straight ejector; 9. Door panel embedded connecting component molding assembly; 10. Connecting rod; 11. Embedded connector; 12. Biting plate; 13. Biting space; 14. Insert rod head; 15. Straight ejector rod; 16. Cylinder; 17. Door panel forming protrusion; 18. Door panel forming cavity; 19. Cooling water assembly. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-7As shown, a lightweight SMC door panel molding die for automobiles includes a top plate 1 and a bottom plate 2. An upper door panel molding die 3 and a lower door panel molding die 4 are provided between the top plate 1 and the bottom plate 2. The lower door panel molding die 4 has a door panel forming protrusion 5, and the upper door panel molding die 3 has a door panel forming recess 6. The door panel forming protrusion 5 and the door panel forming recess 6 are positioned correspondingly and matched in shape. Below the lower door panel molding die 4, there is a lifting connecting plate 7 that can reciprocate linearly in the vertical direction. The lifting connecting plate 7 is provided with a straight ejector 8 and a door panel embedded connector forming assembly 9. The straight ejector 8 and the door panel embedded connector forming assembly 9 are arranged alternately.

[0027] In this embodiment, the shapes of the door panel forming protrusion 5 and the door panel forming recess 6 are designed according to the required shape of the SMC door panel. The two work together to form the forming space of the door panel. The lifting connecting plate 7 can drive the straight ejector 8 and the door panel embedded connector forming assembly 9 to move up and down. The straight ejector 8 is used to eject the door panel from the mold after it is formed. The door panel embedded connector forming assembly 9 is used to form the connector on the door panel. The two are staggered to avoid mutual interference and ensure the normal realization of their respective functions. By setting the door panel embedded connector forming assembly 9, the connector can be pressed during the molding process, realizing the integrated molding of the SMC door panel and the connector, eliminating the need for subsequent processes and improving production efficiency.

[0028] Combination Figure 1-7 As shown, the door panel embedded connector forming assembly 9 includes a plurality of connecting rods 10 disposed on the lifting connecting plate 7. The top of the connecting rod 10 is equipped with an embedded connector 11, and the connecting rod 10 passes through the door panel forming protrusion 5.

[0029] Specifically, the connecting rod 10 serves to connect the lifting connecting plate 7 and the embedded connector 11. The up-and-down movement of the lifting connecting plate 7 is transmitted to the embedded connector 11 through the connecting rod 10, allowing the embedded connector 11 to enter and exit the door panel forming protrusion 5. Under the action of the embedded connector 11, a connector structure can be formed on the SMC door panel. The structure is simple and the connection is reliable, ensuring that the embedded connector 11 is stable in position during the molding process, thereby ensuring the molding quality of the connector.

[0030] The embedded connector 11 is provided with three parallel gripping plates 12, and the cross-section of the gripping plates 12 is hexagonal.

[0031] In this embodiment, three parallel gripping plates 12 are embedded in the SMC material during the molding process. The hexagonal cross-section design increases the contact area and friction between the gripping plates 12 and the SMC material, making the molded connector more firmly bonded to the door panel body and less prone to falling off. This enhances the connection strength between the connector and the door panel body, which improves the overall quality and service life of the product.

[0032] The outer circle of the embedded connector 11 and the three biting plates 12 form two biting spaces 13.

[0033] In this embodiment, the bite space 13 is filled with SMC material during molding. The filled material interlocks with the bite plate 12, further enhancing the connection strength between the connector and the door panel body, making the connection between the connector and the door panel tighter, and improving the structural stability of the product.

[0034] Combination Figure 5-6 As shown, the top of the connecting rod 10 is provided with a plug head 14, and the embedded connector 11 has a hole that engages with the plug head 14. The diameter of the plug head 14 is smaller than the diameter of the connecting rod 10.

[0035] In this embodiment, the insertion head 14 engages with the hole in the embedded connector 11, realizing a detachable connection between the connecting rod 10 and the embedded connector 11, which facilitates the replacement and maintenance of the embedded connector 11. The diameter of the insertion head 14 is smaller than the diameter of the connecting rod 10, forming a stepped structure, which can prevent the embedded connector 11 from falling off the connecting rod 10 during operation, thereby improving the maintenance convenience and service life of the mold.

[0036] The straight pusher 8 includes a plurality of straight pushers 15 disposed on the lifting connecting plate 7, and the straight pushers 15 are parallel to the connecting rod 10.

[0037] In this embodiment, the straight push rod 15 moves up and down under the drive of the lifting connecting plate 7. After the door panel is formed, the straight push rod 15 moves upward to push the door panel out from the door panel forming protrusion 5. The straight push rod 15 and the connecting rod 10 are parallel to each other, ensuring the consistency of their movement directions and avoiding interference during the movement process. This enables the door panel to be demolded smoothly, which has the beneficial effect of improving the automation and efficiency of production.

[0038] Combination Figure 1-7 As shown, a cylinder 16 for driving the lifting connecting plate 7 to move up and down is provided between the base plate 2 and the door panel molding lower mold 4.

[0039] In this embodiment, the cylinder 16 provides power for the movement of the lifting connecting plate 7. By controlling the extension and retraction of the cylinder 16, the lifting height and speed of the lifting connecting plate 7 can be precisely controlled. The drive is smooth and reliable, and the control precision is high, which can ensure the accuracy of the action of the door panel embedded connecting component forming assembly 9 and the straight push component 8.

[0040] Combination Figure 1-7As shown, the door panel forming protrusion 5 includes a door panel forming protrusion 17 disposed in the lower mold 4 of the door panel molding. The straight push rod 15 and the connecting rod 10 respectively pass through the door panel forming protrusion 17. The door panel forming recess 6 includes a door panel forming cavity 18 disposed in the upper mold 3 of the door panel molding. The door panel forming cavity 18 corresponds to the door panel forming protrusion 17 in position and is matched in shape.

[0041] In this embodiment, the door panel forming cavity 18 and the door panel forming protrusion 17 cooperate to form the forming cavity of the SMC door panel. The SMC material is molded into the required door panel shape in the cavity.

[0042] Combination Figure 3 , Figure 4 As shown, both the upper mold 3 and the lower mold 4 of the door panel molding are equipped with cooling water units 19.

[0043] In this embodiment, the cooling water unit 19 controls the temperature of the mold during the molding process by introducing cooling water. During the SMC material molding process, appropriate temperature control helps the material solidify, shortens molding time, and improves production efficiency. At the same time, a stable temperature environment ensures product quality stability, accelerates the production pace, and guarantees product quality.

[0044] The working principle of this utility model is as follows: First, the SMC material is placed on the door panel forming protrusion 17 of the lower mold 4 of the door panel molding. Then, the cylinder 16 is activated, driving the lifting connecting plate 7 to move upward. The lifting connecting plate 7 drives the connecting rod 10 and the straight push rod 15 to move upward, so that the embedded connector 11 passes through the door panel forming protrusion 17 and is inserted into the SMC material. Next, the top plate 1 is controlled to drive the upper mold 3 of the door panel molding to move downward, so that the upper mold 3 of the door panel molding and the lower mold 4 of the door panel molding are closed. At this time, the door panel forming cavity 18 cooperates with the door panel forming protrusion 17 to extrude and form the SMC material. During the molding process, the upper mold 3 of the door panel molding and the lower mold 4 of the door panel molding are closed. Cooling water is introduced into the cooling water assembly 19 inside mold 4 to control the mold temperature and promote the curing of SMC material. At the same time, the gripping plate 12 and gripping space 13 on the embedded connector 11 interact with the SMC material to make the connector and the door panel body integrally formed. After the SMC material is cured and formed, the top plate 1 is controlled to drive the upper mold 3 of the door panel to move upward to realize the mold opening. Then, the cylinder 16 drives the lifting connecting plate 7 to continue to move upward, and the straight push rod 15 pushes the formed SMC door panel out from the door panel forming protrusion 17 to complete the demolding. Finally, the cylinder 16 drives the lifting connecting plate 7 to move downward to reset, waiting for the next molding operation.

[0045] 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 replace them, without departing from the spirit of this utility model.

[0046] Although this document frequently uses terms such as top plate 1, bottom plate 2, upper mold for door panel molding 3, lower mold for door panel molding 4, door panel forming protrusion 5, door panel forming recess 6, lifting connecting plate 7, straight ejector 8, door panel embedded connecting component forming assembly 9, connecting rod 10, embedded connecting head 11, biting plate 12, biting space 13, insert rod head 14, straight ejector rod 15, cylinder 16, door panel forming protrusion 17, door panel forming cavity 18, cooling water assembly 19, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A lightweight SMC door panel molding die for automobiles, comprising a top plate (1) and a bottom plate (2), characterized in that, Between the top plate (1) and the bottom plate (2), there is a door panel molding upper mold (3) and a door panel molding lower mold (4). The door panel molding lower mold (4) has a door panel forming protrusion (5), and the door panel molding upper mold (3) has a door panel forming recess (6). The door panel forming protrusion (5) and the door panel forming recess (6) are positioned and matched in shape. Below the door panel molding lower mold (4), there is a lifting connecting plate (7) that can move back and forth in a vertical direction. The lifting connecting plate (7) has a straight pusher (8) and a door panel embedded connector forming assembly (9). The straight pusher (8) and the door panel embedded connector forming assembly (9) are staggered. The door panel embedded connector forming assembly (9) includes a plurality of connecting rods (10) disposed on the lifting connecting plate (7), the top of the connecting rod (10) is provided with an embedded connector (11), and the connecting rod (10) passes through the door panel forming protrusion (5).

2. The automotive lightweight SMC door panel molding die according to claim 1, characterized in that, The embedded connector (11) is provided with three parallel gripping plates (12), and the cross-section of the gripping plates (12) is hexagonal.

3. The automotive lightweight SMC door panel molding die according to claim 2, characterized in that, The outer circle of the embedded connector (11) and the three biting plates (12) form two biting spaces (13).

4. The automotive lightweight SMC door panel molding die according to claim 3, characterized in that, The top of the connecting rod (10) is provided with a plug head (14), and the embedded connector (11) has a hole that engages with the plug head (14). The diameter of the plug head (14) is smaller than the diameter of the connecting rod (10).

5. The automotive lightweight SMC door panel molding die according to any one of claims 1-4, characterized in that, The straight pusher (8) includes a plurality of straight pushers (15) disposed on the lifting connecting plate (7), and the straight pushers (15) are parallel to the connecting rod (10).

6. The automotive lightweight SMC door panel molding die according to claim 5, characterized in that, A cylinder (16) is provided between the base plate (2) and the door panel molding lower mold (4) for driving the lifting connecting plate (7) to move up and down.

7. The automotive lightweight SMC door panel molding die according to claim 5, characterized in that, The door panel forming protrusion (5) includes a door panel forming protrusion (17) disposed in the door panel molding lower mold (4), and the straight push rod (15) and the connecting rod (10) respectively pass through the door panel forming protrusion (17).

8. The automotive lightweight SMC door panel molding die according to claim 7, characterized in that, The door panel forming recess (6) includes a door panel forming cavity (18) disposed in the upper mold (3) of the door panel molding. The door panel forming cavity (18) corresponds to the door panel forming protrusion (17) in position and is matched in shape.

9. The automotive lightweight SMC door panel molding die according to claim 8, characterized in that, Cooling water units (19) are provided in both the upper mold (3) and the lower mold (4) of the door panel molding.

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