Composite molded automobile inner door plate

Abstract

The utility model discloses a composite molded automobile inner door plate, which comprises a door plate main body formed by hot press molding of an organic plate made of a carbon fiber material, and is characterized in that the edge of the door plate main body and the edges of all holes on the door plate main body are coated with plastic decoration edges; the door plate has the advantages that the organic plate made of the carbon fiber material is used as the door plate main body of the automobile inner door plate formed by compounding, and the plastic decoration edges are arranged on the edges of the door plate main body and the edges of all the holes in the door plate main body in a coating manner, so that the two materials can be effectively compounded together through the structure and the compounding manner; the door plate is simple in structure, the functional area of the door plate is made of plastic materials, the non-functional area of the door plate is made of organic plates made of carbon fiber materials, and therefore the purposes of weight reduction and light weight of the door plate are achieved, and the weight of the door plate can be reduced by 37% at most compared with a plastic PP long-wave-fiber injection molding door plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automobile inner door panels, in particular to a kind of composite automobile inner door panels. BACKGROUND

[0002] The traditional automobile inner door panel forming is the forming of pure plastic parts, with the increasingly fierce market competition, new technology and new material are used in the development of automobile inner door panel. The development of automobile inner door panel has experienced the following stages: the first stage, aluminum alloy die-casting forming door panel;The second stage, metal plate stamping forming door panel;The third stage, plastic PP long wave fiber injection molding door panel.At present, domestic automobile inner door panel begins to introduce plastic PP long wave fiber injection molding door panel to achieve lightweight and meet the strength requirements of automobile inner door panel. With the further improvement of market demand, the market has tried to enter the fourth stage, using new materials and new technology of more lightweight and high strength, organic plate and plastic PP long wave fiber composite forming door panel.

[0003] The organic plate is carbon fiber material, the application of this innovative material can achieve the following effects:

[0004] (1) The automobile inner door panel can achieve maximum lightweight;

[0005] (2) Reduce cost, get parts with complex structure and function;

[0006] (3) Based on the performance of organic plate, the strength of the composite inner door panel can be further improved.

[0007] However, the technology in this field is still in its infancy at home and abroad. The existing technology mainly uses secondary forming method, but this method requires two sets of molds, and due to the relatively complex shape of the automobile inner door panel and the complex composite process of the two materials, the effect of the composite product is not ideal. UTILITY MODEL CONTENT

[0008] The technical problem to be solved by the utility model is to provide a composite automobile inner door panel with simple structure and ideal effect.

[0009] The technical scheme adopted by the utility model to solve the above technical problem is: a composite automobile inner door panel, comprising a door panel main body formed by hot pressing of an organic plate of carbon fiber material, and a plastic trim edge covering the edges of the door panel main body and the edges of all holes on the door panel main body.

[0010] Compared with the prior art, the automobile inner door panel has the advantages that the door panel body of the automobile inner door panel is formed by the organic plate material of carbon fiber material, and the plastic decoration edge is arranged on the edge of the door panel body and the edges of all holes on the door panel body in a cladding mode, the structure and the composite mode can effectively composite the two materials together, and the structure is simple.

[0011] Preferably, the plastic decoration edge comprises a decoration edge main body part and a decoration edge overlapping part which are integrally connected, the decoration edge main body part is located on the outer side of the door panel body, and the decoration edge overlapping part is cladded on the door panel body.

[0012] Preferably, the decoration edge overlapping part is cladded on both sides of the door panel body. The double-sided cladding structure can smoothly combine the plastic and the organic plate material, and the plastic decoration edge is smoothly formed.

[0013] Preferably, the width of the decoration edge overlapping part is 6-8 mm. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A front view of the automobile inner door panel according to the embodiment of the present application;

[0015] Figure 2 A P-P sectional view of the automobile inner door panel according to the embodiment of the present application; Figure 1

[0016] A V1 enlarged view of the automobile inner door panel according to the embodiment of the present application; Figure 3 Figure 2 An O-O sectional view of the automobile inner door panel according to the embodiment of the present application;

[0017] Figure 4 Figure 1 A rear view of the automobile inner door panel according to the embodiment of the present application;

[0018] Figure 5 A Q-Q sectional view of the automobile inner door panel according to the embodiment of the present application;

[0019] Figure 6 A S-S sectional view of the automobile inner door panel according to the embodiment of the present application; Figure 5

[0020] Figure 7 Figure 5

[0021] Figure 8 ​​​​​is based on the final curved surface shape and hole position of the product, and the final curved surface shape and hole position of the product are unfolded into a planar shape and hole position by simulation software to obtain an effect drawing;

[0022] Figure 9 is Figure 8 a structure diagram of a door plate main body obtained after hot-press forming of the organic plate material of the door plate;

[0023] Figure 10 is a structure diagram after the door plate main body is combined with plastic;

[0024] Figure 11 is a structure diagram of the front of the final product;

[0025] Figure 12 is a structure diagram of the back of the final product. DETAILED DESCRIPTION

[0026] The utility model will be described in further detail below in combination with the drawings.

[0027] Embodiment: as Figures 1-7 shown, a combined and formed inner door plate of an automobile includes a door plate main body 1 of a carbon fiber material hot-press formed of an organic plate material, and plastic decoration edges 2 covering edges of the door plate main body 1 of the carbon fiber material and edges of all holes on the door plate main body 1 of the carbon fiber material.

[0028] The plastic decoration edges 2 include a decoration edge main body part 21 and a decoration edge overlapping part 22 connected integrally, the decoration edge main body part 21 is located outside the door plate main body 1 of the carbon fiber material, the decoration edge overlapping part 22 covers both sides of the door plate main body 1 of the carbon fiber material, and can also cover one side of the door plate main body 1 of the carbon fiber material, and the width of the decoration edge overlapping part 22 is 6-8mm.

[0029] The technical scheme of the utility model will be described in detail below in combination with the drawings through an actual example.

[0030] Figure 1 is a front view of the final product shape of the inner door plate of the automobile obtained after the plastic and the organic plate material of the carbon fiber material are formed;

[0031] Figure 2 is a P-P cross-sectional view of Figure 1 ;

[0032] Figure 2 D7=D8=7.0mm, Z1=0.6mm, Z2=1.3mm, T=0.6mm, Y1=Y2=Y3=7mm in D7=7.0mm, D8=37.4mm, Z1=0.6mm, Z2=1.3mm, T=0.6mm, Y1=Y2=Y3=7mm. Actually, the position marked by D7 corresponds to the gate position of the plastic decoration edge 2. Relative to Figure 2The location of the centerline N, where the plastic of the gate portion flows from the stationary mold side to the movable mold side. Then the plastic of the movable mold side overlaps the organic plate of carbon fiber material at Y1 and Y2, and after the plastic cools, it adheres to the organic plate of carbon fiber material to form the decorative edge overlap portion 22 of the single-sided cladding structure. There are six such plastic-formed gates, all of which are the same single-sided cladding structure.

[0033] Figure 3 is a detailed enlargement of V1 in Figure 2 Z1 = 0.6 mm and Z2 = 1.3 mm are the thicknesses of the plastic and the organic plate of carbon fiber material with T = 0.6 mm at the decorative edge overlap portion 22 of Y3 = 7 mm, and the plastic decorative edge overlap portion 22 sandwiches the carbon fiber material door panel body 1 to form a double-sided cladding structure with a width of Y3. After the plastic decorative edge overlap portion 22 cools, it adheres to the carbon fiber material door panel body 1, Figure 3 clearly showing the plastic double-sided cladding structure, and all the contours of the product are of this structure.

[0034] It is precisely because of the existence of the plastic decorative edge overlap portion 22 of Y1 = Y2 = Y3 = 7 mm overlapping the carbon fiber material door panel body 1 that when there is an error between the actual profile and the theoretical profile of the carbon fiber material door panel body 1 after final molding, it is enough to compensate for the error between the actual profile and the theoretical profile of the carbon fiber material door panel body 1 after final molding, ensuring the molding of the plastic decorative edge overlap portion 22 and the carbon fiber material door panel body 1 double-sided cladding structure. Because the hot pressing process of the organic plate of carbon fiber material in the mold is a complex molding process, it cannot be 100% accurately molded, so the double-sided cladding structure allows for errors between the actual molding of the carbon fiber material door panel body 1 and the theoretical computer software calculation, i.e., allows for a tolerance in the molding of the carbon fiber material door panel body 1.

[0035] Figure 4 is Figure 1 an O-O cross-sectional view of Figure 2 Similar to D7, the plastic flows from the stationary mold side to the movable mold side. U is a flow guide feature that connects the gate plastic decorative edge 2 to the plastic decorative edge 2 of all the contours of the product as a whole. At the same time, in this way, the double-sided molding of the plastic on the movable mold side and the stationary mold side is completed. There are six gates in total for this product, and the double-sided cladding of the plastic on the carbon fiber material is completed in the same way.

[0036] Figure 5 is a rear view of the final product shape of the automotive interior door panel.

[0037] Figure 6 is Figure 5Q-Q toward sectional view in FIG. 1. It can be seen that the plastic molding part is injected through the gate of D7 part, and the plastic flows from the fixed mold side to the movable mold side through the flow guide feature U in FIG. 1, and the product shape is completed in the movable mold side. In FIG. 1, Figure 6 the flow guide feature U in FIG. 1, and the product shape is completed in the movable mold side. In FIG. 1, Figure 6 the flow guide feature U in FIG. 1, and the product shape is completed in the movable mold side. In FIG. 1, Figure 6 the flow guide feature U in FIG. 1, and the product shape is completed in the movable mold side. In FIG. 1,

[0038] Figure 7 is Figure 5 S-S toward sectional view in FIG. 1. It can be seen that the plastic of the flow guide feature U flows from the fixed mold side to the movable mold side through the six holes on the plate, and the plastic part is completed in the movable mold side and the fixed mold side, and the double-sided cladding structure of the plastic to the carbon fiber material is completed. The other holes on the carbon fiber material plate all have the same effect of allowing the plastic to flow from the fixed mold side to the movable mold side, and the plastic part is completed in the movable mold side and the fixed mold side.

[0039] Figure 8 is an effect drawing of the final curved surface shape and the hole position of the product being unfolded into a planar shape and a hole position based on the final curved surface shape and the hole position of the product through simulation software. In the drawing, M1 = 464.4 mm, L1 = 656.2 mm, and the thickness of the plate is 0.6 mm. From Figure 8 it can be seen that due to the limitation of the final curved surface shape and the hole position of the product, these shapes and holes are changed into irregular curved shapes after unfolding.

[0040] Figure 9 is Figure 8 the structure diagram of the carbon fiber material door plate main body 1 obtained after the carbon fiber material organic plate shown in FIG. 1 is hot-pressed and cured. In the drawing, M2 = 419.2 mm, L2 = 620.9 mm, D1 = 56 mm, D2 = 13.2 mm, D3 = 23.6 mm, D4 = 51.1 mm, D5 = 25.2 mm, D6 = 13.6 mm, E = 37 mm, and F = 23 mm. From Figure 9As can be seen, the carbon fiber material organic plate with a thickness of T = 0.6 mm has six circular holes with different diameters D1, D2, D3, D4, D5, and D6 distributed on the curved surface after hot forming, and also has rectangular holes with length and width dimensions E and F. Because the final product has plastic modification edges 2 formed on both sides of the carbon fiber material, after hot forming of the carbon fiber material organic plate in the injection molding mold, the plastic needs to flow from the fixed mold side to the movable mold side through the carbon fiber material hole positions, so as to realize the overlapping of the plastic modification edges on both sides of the carbon fiber material door plate main body 1. Therefore, these circular holes and rectangular holes are hole positions with position requirements, and the relative positions of these circular holes and rectangular holes are directly related to Figure 8 the positions of the irregular hole positions in the unfolded shape. That is, Figure 8 the relative positions of the unfolded planar shape irregular holes determine the spatial positions of the holes after hot forming in the injection molding mold. Similarly, although the unfolded length of the carbon fiber material is simulated to be a regular rectangular shape such as Figure 9 by computer simulation, the actual formed shape and the positions of the holes of the carbon fiber material organic plate during the molding process in the injection molding mold are formed in the injection molding mold. There is an error between the actual formed shape and the positions of the holes and the theoretical data. The existence of this error determines that the structure of the junction between the subsequently formed plastic modification edge 2 and the carbon fiber material door plate main body 1 must be an overlapping structure to compensate for the error part of the carbon fiber material after in-mold forming.

[0041] Figure 10 is the shape of the carbon fiber material door plate main body 1 after combined forming with plastic, where M4 = 472.65 mm, M3 = 447.5 mm, and L3 = 650 mm. Because the shape of the plastic part is relatively complex, it involves the combination with the carbon fiber material door plate main body 1, the structural design of the product shape and the combination of the carbon fiber material, the plastic part needs to be formed on the basis of the carbon fiber material organic plate after forming in the injection molding mold, and the plastic needs to be formed on the movable mold side and the fixed mold side of the injection molding mold, and the carbon fiber material on both sides must be formed with plastic, and the combination of the hole positions and the carbon fiber material organic plate all hole structures is completed.

[0042] Figure 11 and Figure 12 are three-dimensional effect diagrams of the front and back of the product, which can better help understand the structure of the plastic double-sided covering of the carbon fiber material.

[0043] The product weight of the above example is 603g, while the all-plastic PP glass fiber plastic molded inner door panel with the same performance has a wall thickness of 1.8mm, and the theoretical calculation value of the product weight is 946g. In this way, each product can reduce weight: 946-603=343g. According to 4 doors per vehicle, 343x4=1372g. That is, the automobile door panel formed by the organic plate composite of the carbon fiber material can reduce the weight of each vehicle by 1.372KG compared with the plastic PP long-wave fiber injection molded door panel of the third stage, which has a specific promoting effect on the lightweight of the automobile, the reduction of carbon emissions and the achievement of the goal of green travel.

[0044] The combination between the plastic and the carbon fiber material organic plate can be smoothly completed through the double-sided cladding structure, the plastic decoration edge 2 and the door panel main body 1 of the carbon fiber material are smoothly formed, the functional area of the automobile inner door panel is formed by plastic, the non-functional area is formed by the carbon fiber material organic plate, so that the weight of the automobile inner door panel is reduced, and the purpose of product lightweight is achieved.

Claims

1. A composite-molded automobile inner door panel, comprising a door panel body formed by hot-pressing an organic sheet material of carbon fiber material, characterized in that: The edges of the door panel body and the edges of all the holes on the door panel body are covered with plastic trimming edges.

2. The composite-molded automobile inner door panel according to claim 1, characterized in that: The plastic trimming edge includes a trimming edge main body and a trimming edge overlapping portion that are integrally connected. The trimming edge main body is located on the outside of the door panel main body, and the trimming edge overlapping portion is covered on the door panel main body.

3. The composite-molded automobile inner door panel according to claim 2, characterized in that: The overlapping portion of the trimming edge is covered on both sides of the door panel body.

4. The composite-molded automobile inner door panel according to claim 2, characterized in that: The width of the overlapping portion of the modified edge is 6 to 8 mm.

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