PUR light-emitting and car body color grating mask

Abstract

The utility model belongs to the technical field of automobile exterior trimming parts, and provides a PUR light-emitting and automobile body color grating mask and a manufacturing method, the PUR light-emitting and automobile body color grating mask comprises a body and a PUR layer, the PUR layer and the body are formed through double-color injection molding, and the PUR layer covers the outer portion of the body. The requirements of customers for complex product appearance modeling, large size, light emitting and vehicle body color can be met, the whole body can be formed in one mold and one-step injection molding process, the process is simple, and product appearance decoration is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile exterior parts, and particularly relates to a PUR light-emitting and body-color grille mask. Background Technique

[0002] Automobile light-emitting grille masks are mainly assembled at the front end of automobiles. For existing automobile light-emitting grille masks, after injection molding with PC materials, an anti-UV coating is generally sprayed on the outer surface of the product first, then black paint is sprayed on the back of the product, and then the paint in the area that needs to be light-transmissive is removed by laser engraving through the laser engraving process, and then white paint that can be light-transmissive is sprayed. The overall length dimension of this product exceeds 1.7 meters. It is difficult to manufacture with traditional processes, the production rhythm is low, the product cost is high, and at the same time, the painting process has large pollution, high energy consumption, and low qualification rate and high cost. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is in view of the current situation of the prior art, and provides a PUR light-emitting and body-color grille mask, which can be in one mold and one injection molding process, with simple process, realizing product appearance decoration, and can meet the requirements of customers for complex product appearance shapes, large sizes, light-emitting, and body colors.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a PUR light-emitting and body-color grille mask, characterized in that it includes a body and a PUR layer, and the PUR layer and the body are formed by two-color injection molding, and the PUR layer covers the outside of the body.

[0005] As one of the solutions, in the above-mentioned PUR light-emitting and body-color grille mask, there is also a decorative film layer between the PUR layer and the body. The decorative film layer has decorative patterns. The decorative film layer covers the outer surface of the body, and the PUR layer covers the outer surface of the decorative film layer.

[0006] In the above-mentioned PUR light-emitting and body-color grille mask, the body is made of PC transparent material, the PUR layer is transparent, and the PUR layer has a glue inlet. The size of the glue inlet meets the following dimensions: a = 50 - 100 mm; b = 20 - 50 mm; c = 5 - 20 mm; d = 50 - 100 mm; e = 10 - 20 mm.

[0007] In the above-mentioned PUR light-emitting and body-color grille mask, the thickness of the body is 3 - 4 mm, the thickness of the decorative film layer is 0.3 - 0.8 mm, and the thickness of the PUR layer is 0.5 - 1.0 mm.

[0008] In the above-mentioned PUR light-emitting and body-color grille mask, the PUR light-emitting and body-color grille mask is divided into a light-transmitting area and a non-light-transmitting area, and the decorative pattern is arranged in the non-light-transmitting area.

[0009] As another way, in the above-mentioned PUR light-emitting and body-color grille mask, the PUR layer is body-colored, the body is made of PC+ABS or PC+PET material, and there is a glue inlet on the PUR layer. The size of the glue inlet meets the following dimensions: a = 50-100mm; b = 20-50mm; c = 5-20mm; d = 50-100mm; e = 10-20mm.

[0010] In the above-mentioned PUR light-emitting and body-color grille mask, the thickness of the body is 3.3-4.8mm, and the thickness of the PUR layer is 0.5-1.0mm.

[0011] In the above-mentioned PUR light-emitting and body-color grille mask, the back of the body has a caulking rib, and the wall thickness of the caulking rib is 1 / 3-1 / 2 of the overall product thickness.

[0012] This patent also provides a manufacturing method of a PUR light-emitting and body-color grille mask, which is characterized by including the following steps:

[0013] Step 1: According to the input shape, through mold flow analysis, the wall thickness of the body is designed to be 3.0-4.0mm, the thickness of the decorative film layer is designed to be 0.3-0.8mm, and the thickness of the PUR layer is designed to be 0.5-1.0mm;

[0014] Step 2: According to the required pattern appearance input, first print the decorative film in the first step. Different colors of ink are printed onto the decorative film through multiple printing processes to form a decorative film layer. In the second step, film forming is carried out, and hot pressing forming or high-pressure forming process is used for forming to form the flat film into the same shape as the product contour. In the third step, film edge cutting is carried out. Through CNC or punching die, the excess material of the decorative film layer is cut off to complete the preparation work before insert injection molding of the decorative film layer;

[0015] Step 3: The body selects PC transparent material, designs an installation structure on the back of the body for product installation, designs a caulking rib and avoids the light-transmitting area of the product. The wall thickness of the caulking rib is 1 / 3-1 / 2 of the overall product thickness;

[0016] Step 4: According to the PUR layer flow simulation analysis, the reaction time of the PUR layer is controlled within 2 - 10 s, the thickness of the PUR layer is designed to be 0.5 - 1.0 mm, and the gate size of the PUR layer is generally designed as follows: a = 50 - 100 mm, b = 20 - 50 mm, c = 5 - 20 mm, d = 50 - 100 mm, e = 10 - 20 mm. At the same time, it is necessary to calculate the overflow amount of the PUR layer, which is designed according to 5% - 10% of the total PUR layer weight, and an overflow port is designed in the last filling area;

[0017] Step 5: Select a two-color injection molding machine. First, place the decorative film layer into the cavity of the first-shot mold. The edge of the decorative film layer is designed with a positioning structure. When the decorative film layer is placed in the mold cavity, it is fixed so that it will not shift during the injection molding process. Second, close the mold and inject the PC substrate. When injecting, injection pressure molding or ordinary injection molding can be selected according to the product structure. Third, after the combination of the first-shot decorative film layer and the PC substrate layer of the body is completed, the mold is opened, rotated to the second shot, and the PUR material is injected through the gate. When the PUR filling is completed, the mold is closed and held, and the PUR material will react and cure. Finally, the mold is opened to take out the part. After the product is taken out, the gate and the overflow groove are milled by CNC.

[0018] This patent also provides another method for manufacturing a PUR light-emitting and body-color grille mask, which is characterized by including the following steps:

[0019] Step 1: According to the input shape, through mold flow analysis, the wall thickness of the body is designed to be 3.3 - 4.8 mm, and the thickness of the PUR layer is designed to be 0.5 - 1.0 mm;

[0020] Step 2: Select PC + ABS or PC + PET material for the body. Design an installation structure on the back of the body for product installation, design caulking ribs and avoid the light-transmitting area of the product. The wall thickness of the caulking ribs is 1 / 3 - 1 / 2 of the overall product thickness;

[0021] Step 3: According to the input color plate, perform color paste color matching for the PUR layer, adjust the PUR layer to the body color, conduct PUR layer flow simulation analysis, control the reaction time of the PUR layer within 2 - 10 s, design the PUR thickness to be 0.5 - 1.0 mm, and the gate size of the PUR layer is generally designed as follows: a = 50 - 100 mm, b = 20 - 50 mm, c = 5 - 20 mm, d = 50 - 100 mm, e = 10 - 20 mm. At the same time, calculate the overflow amount of the PUR layer, which is designed according to 5% - 10% of the total PUR layer weight, and an overflow port is designed in the last filling area;

[0022] Step 4: Select a two-color injection molding machine. First, select PC+ABS or PC+PET materials to mold the body by clamping the mold. During injection molding, injection pressure molding or ordinary injection molding can be selected according to the product structure. Second, after the body injection molding is completed, the mold is opened and rotated to the second shot. PUR material is injected through the gate. When the PUR filling is completed, the mold is clamped and held. During this stage, the PUR material will react and cure. Finally, the mold is opened to take out the part. After the product is taken out, the gate and overflow groove are milled by CNC.

[0023] Compared with the prior art, the advantages of the present utility model are that the PUR in-mold reaction molding process is adopted to meet the requirements of customers for high and low configuration products. It can not only meet the requirements of customers for complex product appearance shapes, large sizes, lighting, and body colors, but also can achieve product appearance decoration in a single mold and one-step injection molding process with simple technology. Description of the Drawings

[0024] Figure 1 is an exploded view of a PUR light-emitting and body-color grille mask with a transparent PUR layer;

[0025] Figure 2 is an exploded view of a PUR light-emitting and body-color grille mask with a body-color PUR layer;

[0026] Figure 3 is a front view of a PUR light-emitting and body-color grille mask showing the light-transmitting and non-light-transmitting structures;

[0027] Figure 4 is a schematic view of the gate structure of the PUR layer;

[0028] Figure 5 is a schematic view of the PUR light-emitting and body-color grille mask after overall injection molding;

[0029] Figure 6 is a schematic view of the overall injection molding process of the PUR light-emitting and body-color grille mask. Detailed Embodiments

[0030] The following are specific embodiments of the present utility model in combination with the drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0031] In the figure, body 100; PUR layer 200; decorative film layer 300; light-transmitting area 400; non-light-transmitting area 500; decorative pattern 600; gate 700.

[0032] As Figure 5As shown in the figure, the present PUR light-emitting and body-color grille mask includes a body 100 and a PUR layer 200. The PUR layer 200 and the body 100 are formed by two-color injection molding, and the PUR layer 200 covers the outside of the body 100. Here, the present patent uses the PUR in-mold reaction molding process to meet the requirements of high and low configuration products for customers. PUR is made by the reaction of polyol (A material) and isocyanate (B material). It is usually transparent. When adding a color paste component and mixing it with the A material and B material for molding, the body color can be achieved. When mica powder or aluminum powder is added to the color paste, the metallic body color can be achieved.

[0033] When the customer has a local light-emitting requirement for the front grille, that is, a specific decorative pattern 600 is displayed when not lit, and light transmission of a specific pattern is achieved when lit. By changing the lighting sequence of the LEDs, different lighting effects can be achieved. This utility model uses the film IML process to achieve this decorative effect.

[0034] Specifically, the present patent mainly has two solutions, as Figure 1 shown, the first is the PUR layer 200, the body 100, and the decorative film layer 300. The decorative film layer 300 is located between the PUR layer 200 and the body 100. The decorative film layer 300 has a decorative pattern 600. The decorative film layer 300 covers the outer surface of the body 100, and the PUR layer 200 covers the outer surface of the decorative film layer 300. Here, mainly the transparent PUR layer 200 plays a protective role. The decorative film layer 300 is combined with the body 100. The body 100 is made of PC transparent material, and the PUR layer 200 is transparent, as Figure 4 shown, the PUR layer 200 has a glue inlet 700, and the size of the glue inlet 700 meets the following dimensions: a = 50 - 100 mm; b = 20 - 50 mm; c = 5 - 20 mm; d = 50 - 100 mm; e = 10 - 20 mm. The thickness of the body 100 is 3 - 4 mm, the thickness of the decorative film layer 300 is 0.3 - 0.8 mm, and the thickness of the PUR layer 200 is 0.5 - 1.0 mm, as Figure 3 shown, the PUR light-emitting and body-color grille mask is divided into a light-transmitting area 400 and a non-light-transmitting area 500. The decorative pattern 600 is arranged at the non-light-transmitting area 500. The back of the body 100 has a glue-beading rib. The wall thickness of the glue-beading rib is 1 / 3 - 1 / 2 of the overall product thickness. Because there is a PUR layer 200 on the outermost surface, the surface shrinkage can be reduced through the glue-beading rib. When designing the glue-beading rib, the light-transmitting area 400 of the product needs to be avoided.

[0035] Here, the manufacturing method of the first type of PUR light-emitting and body-color grille mask mainly includes the following steps:

[0036] As Figure 6As shown, in Step 1, according to the input shape, through mold flow analysis, the wall thickness of the body 100 is designed to be 3.0 - 4.0 mm, the thickness of the decorative film layer 300 is designed to be 0.3 - 0.8 mm, and the thickness of the PUR layer 200 is designed to be 0.5 - 1.0 mm; in Step 2, according to the required pattern appearance, first print the decorative film. Through multiple printing processes, inks of different colors are printed onto the decorative film to form the decorative film layer 300. Second, perform film forming. Use thermoforming or high-pressure forming processes to form the flat film into a shape consistent with the product contour. Third, perform film edge cutting. Through CNC or punching dies, cut off the excess material of the decorative film layer 300 to complete the preparation work before insert injection molding of the decorative film layer 300; in Step 3, select PC transparent material for the body 100. Design an installation structure on the back of the body 100 for product installation, design glue ribs and avoid the product light-transmitting area 400. The wall thickness of the glue ribs is 1 / 3 - 1 / 2 of the overall product thickness; in Step 4, according to the flow simulation analysis of the PUR layer 200, the reaction time of the PUR layer 200 is controlled within 2 - 10 s, the thickness of the PUR layer 200 is designed to be 0.5 - 1.0 mm. The dimensions of the feed port 700 of the PUR layer 200 are generally designed as follows: a = 50 - 100 mm, b = 20 - 50 mm, c = 5 - 20 mm, d = 50 - 100 mm, e = 10 - 20 mm. At the same time, it is necessary to calculate the overflow amount of the PUR layer 200, which is designed according to 5% - 10% of the total weight of the PUR layer 200, and design an overflow port in the final filling area; in Step 5, select a two-color injection molding machine. First, place the decorative film layer 300 into the cavity of the first-shot mold. Design a positioning structure at the edge of the decorative film layer 300. When the decorative film layer 300 is placed into the mold cavity, the decorative film layer 300 is fixed so that it will not shift during the injection molding process. Second, close the mold and inject the PC base material. When injecting, injection pressure injection or ordinary injection can be selected according to the product structure. Third, after the combination of the first-shot decorative film layer 300 and the PC base material layer of the body 100 is completed, the mold is opened, rotated to the second shot, and PUR material is injected through the feed port 700. When the PUR filling is completed, the mold is closed and held. The PUR material will react and cure. Finally, the mold is opened to take out the part. After the product is taken out, CNC milling is performed on the feed port 700 and the overflow groove.

[0037] As Figure 2As shown, this is the second solution for the PUR light-emitting and body-color grille mask. It mainly realizes the combination of metallic body-color PUR and a black substrate. The difference from the first solution here is that the decorative film layer 300 is cancelled, and the transparent PUR material is replaced with body-color PUR material. Correspondingly, the wall thickness of the body 100 will increase by the thickness of one film, that is, 0.3 - 0.8 mm. This PUR light-emitting and body-color grille mask includes a body 100 and a PUR layer 200. The PUR layer 200 and the body 100 are formed by two-color injection molding, and the PUR layer 200 covers the outside of the body 100. The PUR layer 200 is in body color. The body 100 is made of PC + ABS or PC + PET material. The PUR layer 200 has a gating port 700, and the size of the gating port 700 meets the following dimensions: a = 50 - 100 mm; b = 20 - 50 mm; c = 5 - 20 mm; d = 50 - 100 mm; e = 10 - 20 mm. The thickness of the body 100 is 3.3 - 4.8 mm, and the thickness of the PUR layer 200 is 0.5 - 1.0 mm. The back of the body 100 has a caulking rib. The wall thickness of the caulking rib is 1 / 3 - 1 / 2 of the overall product thickness. Because there is a PUR layer 200 on the outermost surface, the surface shrinkage can be reduced through the caulking rib. When designing the caulking rib, the light-transmitting area of the product needs to be avoided.

[0038] The manufacturing method of the second type of PUR light emission and body-color grille mask mainly includes the following steps: Step 1: According to the input shape, through mold flow analysis, the wall thickness of the main body 100 is designed to be 3.3 - 4.8 mm, and the thickness of the PUR layer 200 is designed to be 0.5 - 1.0 mm; Step 2: The main body 100 is made of PC + ABS or PC + PET material. An installation structure is designed on the back of the main body 100 for product installation, and glue injection ribs are designed while avoiding the light-transmitting area of the product. The wall thickness of the glue injection ribs is 1 / 3 - 1 / 2 of the overall product thickness; Step 3: According to the input color plate, the color paste of the PUR layer 200 is color-matched to make the PUR layer 200 the body color. The flow simulation analysis of the PUR layer 200 is carried out, and the reaction time of the PUR layer 200 is controlled within 2 - 10 s. The PUR thickness is designed to be 0.5 - 1.0 mm. The dimensions of the glue inlet 700 of the PUR layer 200 are generally designed as follows: a = 50 - 100 mm, b = 20 - 50 mm, c = 5 - 20 mm, d = 50 - 100 mm, e = 10 - 20 mm. At the same time, the overflow amount of the PUR layer 200 is calculated and designed according to 5% - 10% of the total weight of the PUR layer 200. An overflow port is designed in the last filling area; Step 4: A two-color injection molding machine is selected. First, PC + ABS or PC + PET material is selected to close the mold and inject the main body 100. During injection molding, injection-pressure injection or ordinary injection can be selected according to the product structure. Second, after the injection molding of the main body 100 is completed, the mold is opened and rotated to the second shot. The PUR material is injected through the glue inlet 700. When the PUR filling is completed, the mold is closed and held. During this stage, the PUR material will react and cure. Finally, the mold is opened to take out the part. After the product is taken out, the glue inlet 700 and the overflow groove are milled by CNC.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications to the described specific embodiments or use similar methods for substitution, but will not deviate from the scope defined by the spirit of the present utility model.

Claims

1. A PUR luminous and body-color grille mask, characterized in that, It includes a main body and a PUR layer, the PUR layer and the main body are formed by two-color injection molding, and the PUR layer is covered on the outside of the main body, and there is a decorative film layer between the PUR layer and the main body, and the decorative film layer has a decorative pattern, the decorative film layer is covered on the outer surface of the main body, and the PUR layer is covered on the outer surface of the decorative film layer.

2. A PUR luminous and body-colored grille mask according to claim 1, characterized in that: The main body is made of PC transparent material, the PUR layer is transparent, and the PUR layer is provided with a glue inlet, the size of which meets the following dimensions: a=50-100mm; b=20-50mm; c=5-20mm; d=50-100mm; e=10-20mm.

3. A PUR luminous and body-colored grille mask according to claim 2, characterized in that: The thickness of the main body is 3-4 mm, the thickness of the decorative film layer is 0.3-0.8 mm, and the thickness of the PUR layer is 0.5-1.0 mm.

4. A PUR luminous and body-colored grille mask according to claim 1, characterized in that: The PUR luminous and body-color grille mask is divided into a light-transmitting area and a non-light-transmitting area, and the decorative pattern is arranged in the non-light-transmitting area.

5. A PUR luminous and body-color grille mask according to claim 1, characterized in that: The PUR layer is in the color of the vehicle body, the main body is made of PC+ABS or PC+PET material, and the PUR layer is provided with a glue inlet, the size of which meets the following dimensions: a=50-100mm; b=20-50mm; c=5-20mm; d=50-100mm; e=10-20mm.

6. A PUR luminous and body-colored grille mask according to claim 5, characterized in that: The thickness of the main body is 3.3-4.8 mm, and the thickness of the PUR layer is 0.5-1.0 mm.

7. A PUR luminous and body-color grille mask according to claim 2 or 5, characterized in that: The back of the main body is provided with a glued rib, and the wall thickness of the glued rib is 1 / 3-1 / 2 of the thickness of the whole product.

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