Automobile wheel cover fender and manufacturing method thereof

Abstract

The invention relates to an automobile wheel cover fender and a manufacturing method thereof. The manufacturing method comprises the following steps: (1) heating and softening a main material and a reinforcing material; (2) a reinforcing material is placed in a reinforcing area in the mold, and then a main material is placed in the mold and located above the reinforcing material; and (3) closing the mold and carrying out pressure-maintaining molding, so that the reinforcing material and the main material are adhered together. Compared with the prior art, the automobile wheel cover fender has the advantages that the cost is reduced and greatly increased through bilateral material pressing, the situation that the labor cost and the part cost are excessively increased due to the fact that the structure is changed or additional procedures such as plastic part assembling are added is avoided, the safety performance of the automobile wheel cover fender is good, and the part strength needed by the situation is met.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to an automobile wheel cover fender and a manufacturing method thereof. Background Art

[0002] The wheel cover fender parts of automobiles are made by mixing polyester fiber and polypropylene fiber at high temperature. They are mainly connected to the body bumper and the bottom deflector. Their main function is to protect the engine and chassis parts. At the same time, they can soundproof and reduce noise and spoiler. They have better heat resistance, cold resistance, stone impact resistance, wear resistance, aging resistance and sound absorption performance. Due to the design defects of the main engine factory for the body structure, when the vehicle passes through the flooded road surface during high-speed driving in rainy days, the water waves hit the parts themselves. The textile wheel cover fender itself is not strong enough to support the impact force, causing deformation and affecting the steering system, etc. In this case, the safety requirements of this part are very high. At present, there are few effective solutions to this problem under basic molding conditions in China. Most of them use plastic parts as substitutes, increase the structure of leaking plastic parts, etc. There is no effective solution to maintain beauty and meet performance. Summary of the invention

[0003] The purpose of the present invention is to provide a car wheel cover fender and a manufacturing method thereof, which have good safety performance while maintaining aesthetics.

[0004] The purpose of the present invention can be achieved by the following technical solution: A method for manufacturing a car wheel cover fender comprises the following steps:

[0005] (1) Heat and soften the main material and the reinforcing material;

[0006] (2) First, place the reinforcing material in the reinforcing area of ​​the mold, and then place the main material in the mold and above the reinforcing material;

[0007] (3) Close the mold and maintain pressure to form the reinforcement material and the main material.

[0008] Preferably, the main material comprises a composite non-woven fabric and a wheel arch carpet, and step (2) brings the wheel arch carpet of the main material into contact with the reinforcing material.

[0009] More preferably, the non-woven fabric is made of PET, has a thickness of 0.5 to 2 mm, and a gram weight of 90 to 110 g / m 2 .

[0010] Further preferably, the wheel cover carpet is made of PET+PP, with a thickness of 6-10 mm and a gram weight of 1080-1320 g / m 2 .

[0011] More preferably, the wheel house carpet includes a PET layer and a PP layer.

[0012] More preferably, the reinforcing material is made of PET+PP, with a thickness of 6-10 mm and a gram weight of 1080-1320 g / m 2 .

[0013] Preferably, the reinforcing material comprises a PET layer and a PP layer.

[0014] Preferably, the main material and the reinforcing material are heated to soften at a temperature of 230 to 250° C. and the time is 2 to 2.5 minutes.

[0015] Preferably, the reinforcement area in the mold has an arc-shaped transition, and the thickness is reduced from 4 to 6 mm to 2 to 3 mm, preferably from 5 mm to 2.5 mm.

[0016] Further preferably, the reinforcement area is arranged between two cavities of the mold, is in the form of a concave arc, and has a width of 600 to 620 mm, preferably 610 mm.

[0017] Preferably, the method for manufacturing the automobile wheel cover fender specifically comprises the following steps:

[0018] (1) The main material and the reinforcing material are placed in a heating device to heat and soften, and the reinforcing area is fixed on the mold by hanging pins;

[0019] (2) After heating, first take out the reinforcing material and lay it flat according to the position of the hanging needle, then take out the main material and lay it flat on the mold with the non-woven fabric facing up, and then press the start button to hold the pressure for molding. The two materials are bonded together by the same physical properties;

[0020] (3) The cooled and formed parts are trimmed to obtain the formed parts.

[0021] Preferably, the mold closing and pressure holding molding time in step (3) is 70 to 90 seconds, and the pressure is 15 to 17 MPa.

[0022] A car wheel cover fender is manufactured by adopting the manufacturing method.

[0023] Preferably, the thickness of the main body area of ​​the automobile wheel cover fender is 2.5-3 mm, and the thickness of the reinforcement area is 2.5-5 mm.

[0024] In the present invention, a hanging pin is arranged beside the outermost mold of the area to be reinforced to limit the position of the reinforcing material, thereby ensuring that the reinforcing material is within a specified range and will not cause other problems due to exceeding the range.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention reduces the cost increase significantly by pressing the materials on both sides, avoiding excessive increase in labor and parts costs due to structural changes or additional processes such as adding plastic parts assembly;

[0027] 2. The non-woven fabric and the mold of the present invention are gradually reduced to avoid the poor appearance of obvious areas due to uneven thickness;

[0028] 3. The automobile wheel cover fender of the present invention has good safety performance and meets the parts strength required for such situations;

[0029] 4. The automobile wheel cover fender of the present invention is easy to install, the parts are not changed much, and there is no interference with the environment;

[0030] 5. The automobile wheel cover fender of the present invention can maintain a good appearance and keep it beautiful;

[0031] 6. The present invention has lower cost than similar solutions and will not cause excessive additional processes and manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the position of the reinforcement area of ​​the present invention;

[0033] Figure 2 This is a front view of the automobile wheel cover fender component product of the present invention;

[0034] Figure 3 This is a real picture of the reverse side of the automobile wheel cover fender component product of the present invention. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0036] Example 1

[0037] A method for manufacturing a car wheel cover fender part includes forming and manufacturing the part, and the specific steps are as follows:

[0038] a. Parts molding and manufacturing

[0039] (1) Place the main material and the reinforcement material in a heating device to heat and soften them. The area that needs to be reinforced (such as Figure 1 ), fix the reinforcement area by hanging pins;

[0040] (2) After heating, first take out the reinforcing material and lay it flat according to the position of the hanging needle. Then take out the main material and lay it flat on the mold, with the non-woven fabric facing up. Then press the start button to hold the pressure and form. The two materials are bonded together by the same physical properties.

[0041] (3) The cooled and formed parts are trimmed to obtain the formed parts.

[0042] Specifically, in this embodiment, the main material used is PET+PET+PP, that is, non-woven fabric (100g)+wheel cover carpet (1200g). The reinforcing material used is PET+PP (1200g) wheel cover carpet.

[0043] The mold adds a transition to the reinforcement area, and the thickness slowly decreases from 5mm in the reinforcement area to 2.5mm in the main body.

[0044] During the heating and softening process of the material, the temperature of the heating equipment is controlled at 230-250°C.

[0045] The adhesion force between the main material and the reinforcement material can reach 30N.

[0046] The automobile wheel cover fender parts (such as Figures 2-3 ) has the following properties:

[0047] 1. Tensile strength: can reach 2000N in longitudinal and transverse directions.

[0048] 2. Pull win rate: It can reach more than 30% after the parts are formed.

[0049] 3. Anti-stone impact performance: no abnormal phenomena such as deformation, cracking, breakage, falling off and wear.

[0050] 3. Water shock resistance: can meet 450mm depth 10 cycles; 30mm depth 10 cycles (speed 65+5kph).

[0051] 4. Appearance: No obvious traces of double-layer material splicing.

[0052] Comparative Example

[0053] 1. The mold does not have a reinforced area, the water impact resistance effect cannot be guaranteed, the material size cannot be confirmed, and the customer's cost may increase.

[0054] 2. The thickness of the reinforcement area is not transitional. Maintaining 2.5mm will result in poor die punching effect. The overlapping area of ​​the two layers of material will cause a large area to be obviously white and shiny, with obvious splicing marks and poor appearance.

[0055] 3. If non-woven fabric is replaced with surface carpet, the gram weight will increase, and the back of the surface carpet needs to be powdered to ensure the adhesion between the materials, which will increase the material cost. Secondly, it is impossible to make a one-piece material, and the labor force of workers will increase during the molding process. From laying two carpets to laying three, the efficiency of workers will decrease, and the labor cost will increase.

[0056] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A method for manufacturing a car wheel cover fender, characterized in that: The following steps are involved: (1) Heat and soften the main material and the reinforcing material; (2) First, place the reinforcing material in the reinforcing area of ​​the mold, and then place the main material in the mold and above the reinforcing material; (3) Close the mold and maintain pressure to form the reinforcement material and the main material.

2. The method for manufacturing a car wheel cover fender according to claim 1, characterized in that: The main material comprises a composite non-woven fabric and a wheel arch carpet, and step (2) brings the wheel arch carpet of the main material into contact with the reinforcing material.

3. The method for manufacturing a car wheel cover fender according to claim 2, characterized in that: The non-woven fabric is made of PET, has a thickness of 0.5-2 mm, and a gram weight of 90-110 g / m 2 .

4. The method for manufacturing a car wheel cover fender according to claim 2, characterized in that: The wheel cover carpet is made of PET+PP, with a thickness of 6-10 mm and a gram weight of 1080-1320 g / m 2 .

5. The method for manufacturing a car wheel cover fender according to claim 4, characterized in that: The reinforcing material is made of PET+PP, with a thickness of 6-10 mm and a gram weight of 1080-1320 g / m 2 .

6. The method for manufacturing a car wheel cover fender according to claim 1, characterized in that: The main material and the reinforcing material are heated to soften at a temperature of 230 to 250° C. and the time is 2 to 2.5 minutes.

7. The method for manufacturing a car wheel cover fender according to claim 1, characterized in that: The reinforcement area in the mold has an arc-shaped transition, and the thickness is reduced from 4 to 6 mm to 2 to 3 mm.

8. The method for manufacturing a car wheel cover fender according to claim 7, characterized in that: The reinforcement area is arranged between two mold cavities of the mold, presents a concave arc, and has a width of 600-620 mm.

9. The method for manufacturing a car wheel cover fender according to claim 1, characterized in that: The specific steps include: (1) The main material and the reinforcing material are placed in a heating device to heat and soften, and the reinforcing area is fixed on the mold by hanging pins; (2) After heating, first take out the reinforcing material and lay it flat according to the position of the hanging needle, then take out the main material and lay it flat on the mold with the non-woven fabric facing up, and then press the start button to hold the pressure for molding. The two materials are bonded together by the same physical properties; (3) The cooled and formed parts are trimmed to obtain the formed parts.

10. A car wheel cover fender, characterized in that: The invention is prepared by the production method according to any one of claims 1 to 9.

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