CN115817370A - Three-color radar cover car logo with appearance effect and manufacturing process - Google Patents

Abstract

The invention discloses a three-color appearance effect radome car logo, which comprises a three-color outer plate and an inner plate insert, wherein the three-color outer plate comprises a transparent material layer, the outer side of the transparent material layer is provided with a hard coating, the inner side of the transparent material layer is provided with a high-brightness black material layer and a color material layer, the inner plate insert is fixed with the inner side of the three-color outer plate, the transparent material layer, the high-brightness black material layer and the color material layer are made of PC, ASA or AES, and the inner plate insert is made of AES, ASA or ABS; and the insert injection molding process is utilized to replace the low efficiency of glue bonding, so that the product is more stable.

Description

Three-color radar cover car logo with appearance effect and manufacturing process

Technical Field

The invention belongs to the technical field of automobile radomes, and particularly relates to a three-color radome automobile logo with an appearance effect and a manufacturing process.

Background

An Adaptive cruise control (Adaptive cruise control) system continuously senses the road condition ahead by a radar in the front of a vehicle during the running of the vehicle, and is assisted with a wheel speed sensor on a wheel to feed back the vehicle speed, so as to realize automatic acceleration and deceleration control to a certain degree. The ACC technology is an active safety technology for finding dangers in advance and protecting lives, and the most important application of the whole adaptive cruise control system is millimeter wave radar (ranging sensor), which can send out millimeter waves to obtain feedback data after scanning a front vehicle, and plays a decisive role in the safety of the whole adaptive cruise control system.

Automation and electromotion are development directions in the field of automobiles in the future, under the current government call of energy conservation and emission reduction, the electric and hybrid technology gradually becomes mature, a plurality of colors such as blue, red and the like are added in the appearance design of the radar cover car logo, the original main tone which is only black and bright silver is changed, so that car logos with various effects and various colors are produced, in order to realize the appearance effect, a plurality of processing links are needed, and the processing links often need a plurality of tools and auxiliary jigs, and the added links bring higher reject ratio, increase additional failure risks and high development cost for the development of the radar cover car logo.

Take black, blue, metal highlight color as an example.

As shown in fig. 1, it is a first three-color emblem making process in the prior art, and its process is to injection mold a transparent PC outer plate (2); spraying a surface hardening layer (1) on the outer surface of the outer plate (2); performing black printing (3) on the inner surface of the outer plate (2); performing laser engraving (4) on the basis of the black printing (3), and removing a black ink layer of a part with apparent external color; performing blue printing, and enabling the blue to pass through the transparent position which is removed in the step (4); performing PVD (6) to achieve high-gloss electroplating effect; spraying a protective layer (7) to protect the PVD; meanwhile, the vehicle logo base (8) is independently injected for standby; and (3) bonding the outer cover and the injection molding base (8) which are manufactured by the whole processes from (1) to (7) through glue to manufacture a complete radar cover car logo, wherein the appearance of the complete radar cover car logo shows three effects of black, blue and metal highlight and bright colors.

As shown in fig. 2, it is a second three-color emblem making process in the prior art, and its process is to form an outer plate (2) combining transparent PC and black PC by two-color injection molding; spraying a surface hardening layer (1) on the outer surface of the outer plate (2); blue printing (3) is carried out at the transparent position in the middle of the inner side surface; performing PVD (4) to achieve a high-gloss electroplating effect; spraying a protective layer (5) to protect the PVD and the blue printing layer; and (3) placing the outer cover manufactured by the whole processes of (1) to (5) into a base for insert injection molding (6), thereby forming a complete radar cover car logo, wherein the appearance of the complete radar cover car logo shows three effects of black, blue and metal highlight and bright colors.

The two car logo manufacturing processes have the following problems:

the above-mentioned links (3) and (5) in the first prior art and (3) in the second prior art are all process links actually existing for presenting black/blue appearance effect, which require development of corresponding coating/printing line and special jig/mask for operation, and the development cost is high;

the link (4) mentioned in the first prior art is a laser engraving link, which needs to be invested in a laser engraving machine, develop and debug corresponding programs, and develop corresponding jigs;

in terms of yield, due to the existence of coating/printing links, the possibility of pollution to other positions on the inner side of a product in the production process is greatly increased, the coating/printing process is indispensably accompanied with several dust removal and degreasing links, several spraying/printing links, several baking links and inspection links, and each long link can cause the first pass rate/one pass yield of the product to be greatly reduced;

in terms of production takt time, a special baking line is required to be equipped in the coating/printing link, so that the bottleneck of a single process which is input and elongated is increased, and the production efficiency of products is seriously influenced.

In terms of environmental pollution, coating/printing requires the use of a large amount of diluents and additives, which also causes environmental pollution problems.

In terms of wave-transmitting performance, the added coating/printing layer is thin, but the difference between the dielectric constant and the material is large, a certain interface is formed between the two, and if verification and control are not proper, the electric wave transmission performance is reduced, the reflectivity is greatly improved, and the main performance of the product is seriously influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a three-color injection molding process which directly replaces three procedures of black printing, laser engraving and blue printing in the traditional process; and the insert injection molding process is utilized to replace the low efficiency of glue bonding, so that the product is more stable, and the process is more environment-friendly.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a three-colour outward appearance effect radome car logo, includes three-colour planking and inner panel inserts, the three-colour planking includes the transparent material layer, and the outside on transparent material layer is provided with the hardcoat, and the inboard on transparent material layer is provided with high bright black material layer and colored material layer, the inner panel inserts is fixed with the inboard of three-colour planking, the material on transparent material layer, high bright black material layer and colored material layer is PC, ASA or AES, the material of inner panel inserts is AES, ASA or ABS.

Further the transparent material layer, the high bright black material layer and the colored material layer of three-colour planking are injection moulding, inner panel inserts injection moulding in the inboard of three-colour planking.

The difference of the dielectric constants of each two layers of the transparent material layer, the highlight black material layer and the color material layer of the three-color outer plate is less than 0.1; the difference between the dielectric constant of the inner plate insert material and the dielectric constant of the material in the three-color outer plate is +/-0.15.

And a PVD (physical vapor deposition) high-brightness silver layer is arranged on the surface of the three-color outer plate facing the inner plate insert, and a protective coating is arranged on the surface of the PVD high-brightness silver layer.

A manufacturing process of a three-color radar cover car logo with appearance effect comprises the following steps:

s1: the transparent material, the high-brightness black material and the color material are sequentially subjected to injection molding by using a three-color injection molding machine to form a three-color outer plate, and the outer plate is taken out by a manipulator after the injection molding is finished;

s2: spraying a hard coating on the outer side of the three-color outer plate after injection molding, wherein a mechanical arm is adopted for spraying during spraying, and the product is taken out after spraying;

s3: and transferring the product into a mold cavity of an injection molding machine, and performing injection molding on the inner side of the three-color outer plate by using the injection molding machine to obtain the inner plate insert material, thereby completing the manufacturing.

Further, before step S2, there is step S11: customizing a special shielding jig according to the actual shape of a product, shielding the part which does not need to be subjected to PVD, hanging the product loaded with the shielding jig into a PVD furnace by using a manipulator, closing the furnace after finishing hanging, vacuumizing, starting PVD operation until the PVD coating process is finished, and taking a workpiece by using the manipulator and hanging the workpiece downwards; and performing protective coating on the product subjected to the PVD operation, and performing thermal curing on the protective coating.

The transparent material, the high-brightness black material and the color material are made of PC, the molding temperature of the three PC materials is 260-310 ℃, and the molding temperature of the inner plate insert material is lower than that of the three PC materials.

Further, before step S1, the transparent material, the highlight black material and the color material pellets are dried at 100 to 120 ℃ for 4 to 8H, respectively, and then fed into a three-color injection molding machine in which the barrel temperature is 290 to 310 ℃.

Further, before the step S3, drying the material ions of the inner plate insert at 80-90 ℃ for 3-4H, wherein in the step S3, the temperature of the charging barrel is 200-230 ℃, the injection molding pressure of more than 40MPa is adopted during injection molding, the injection molding speed is more than 20mm/S, the pressure maintaining pressure is more than 5MPa, the pressure maintaining time is more than 1S, and the mold temperature is more than 70 ℃.

Further, in step S11, when the thermosetting protective coating film is used, the protective coating needs to be stored in a shade at a temperature of 20-30 ℃ and a humidity of 60 + -15%, the density of the protective coating is 0.6-0.7g/cm < 3 >, the protective coating is directly cured at a temperature of 70-80 ℃ on line for 40 minutes, and the thickness of the cured coating is 15-20 μm.

Compared with the prior art, the invention has the beneficial effects that:

the three processes of black printing, laser engraving and blue printing in the traditional process are directly replaced by a three-color injection molding process, and an insert injection molding process is utilized to replace a low-efficiency construction method of glue adhesion;

by three-color injection molding, the process of transparent PC outer cover, black effect and blue effect is completed in one process, three processes of black printing, laser engraving and blue printing are replaced, and the production yield is greatly improved; meanwhile, a series of jigs/covers required by black and blue two-pass coating and laser engraving are saved, two sets of printing equipment and one set of laser engraving equipment are saved, and the cost is greatly reduced. Three links are omitted, so that the production efficiency is greatly improved;

through the insert injection molding process, the injection molding time of a few seconds is used for replacing the gluing time of more than ten hours, so that the production takt is greatly reduced. Meanwhile, the manufacturing cost of hundreds of sets of jigs is saved, and a special baking line is also provided. Glue is not used in the whole process, so that the problem of environmental pollution caused by volatilization of the glue is solved. In the aspect of safety, because the outer cover and the base are finally combined into a whole through injection molding, the inner structure is firmly combined without a gap, and water vapor cannot enter. The finished product has no risk of disengagement, and wave transmission stability and safety are guaranteed;

because the influence of paint/printing layer is avoided, the dielectric constants of the materials are consistent, and the electric wave transmission performance is excellent;

the process eliminates the painting/printing link, greatly reduces the pressure of factory discharge and pollution, and is more friendly to the environment.

Drawings

FIG. 1 is a diagram of a first three-color emblem making process in the prior art;

FIG. 2 is a diagram of a second three-color emblem making process of the prior art;

FIG. 3 is a schematic view of a three-color radome emblem of the present invention;

FIG. 4 is a schematic view of a second embodiment of a three-color radome emblem of the invention;

FIG. 5 is a schematic view of a third embodiment of a three-color radome emblem of the invention;

FIG. 6 is a schematic view of a third embodiment of a three-color radome emblem of the invention;

FIG. 7 is a flow chart of a process for making a three-color appearance effect radome emblem of the present invention;

fig. 8 is a schematic view of a three-color injection molding machine used in the present invention.

Reference numerals: 1. a transparent PC layer; 2. a sapphire blue PC layer; 3. a highlight black PC layer; 4. PVD highlight silver layer; 5. a protective coating; 6. a hard coating; 7. a disc; 71. a primary injection molding cavity; 72 secondary injection molding cavity; 73. a third injection molding cavity; 81. a primary injection molding device; 82. a secondary injection molding device; 83. and (5) performing tertiary injection molding on the device.

Detailed Description

Embodiments of the three-color appearance effect radome emblem and the manufacturing process of the invention will be further described with reference to fig. 3 to 8.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" or "a number" means two or more unless explicitly specified otherwise.

In the following embodiments of the present application, the transparent material layer, the highlight black material layer, and the color material layer are all made of PC, the material layer is set to sapphire blue, and the inner plate insert is made of AES.

The first embodiment is as follows:

the utility model provides a three-colour outward appearance effect radome car logo, includes three-colour planking and inner panel inserts, the three-colour planking includes the transparent material layer, and the outside on transparent material layer is provided with hardcoat 6, and the inboard on transparent material layer is provided with high bright black material layer and colored material layer, the inner panel inserts is fixed with the inboard of three-colour planking.

In this embodiment the transparent material layer, the high bright black material layer and the colored material layer of three-colour planking are injection moulding, inner panel insert injection moulding is in the inboard of three-colour planking.

As shown in fig. 3, in this embodiment, as seen from the cross-sectional view of the overlapped part, the hard coating layer 6, the transparent PC layer 1, the highlight black PC layer 3, and the sapphire blue PC layer 2 are sequentially arranged from the outer layer to the inner layer of the product, and the layers adopt the same PC substrate property, so that they are integrated and will not be peeled off from each other, thereby making the boundary clear.

When the structure is applied, the PVD highlight silver layer 4 is not provided, and the blue color presented by the traditional paint spraying or ink printing is replaced by the material of the sapphire blue PC layer 2, so that the protection of the protective coating 5 is not needed; wherein, the hard coating 6 and the transparent PC layer 1 are combined to present a high transparent crystal effect; the high bright black PC layer 3 shows a high bright black effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the sapphire blue PC layer 2 presents a sapphire blue effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; on the other hand, the part (overlapping part) of the sapphire blue PC layer 2 shielded by the highlight black PC layer 3 cannot be seen from the appearance surface, and is thus perfectly shielded.

In the preferred embodiment, the difference of the dielectric constants of each two layers of the transparent PC layer 1, the high-brightness black PC layer 3 and the sapphire blue PC layer 2 of the three-color outer plate is less than 0.1; the difference between the dielectric constant of the AES inner plate insert and the dielectric constant of the PC material in the three-color outer plate is +/-0.15.

The loss tangent of the four materials is 0.02 or less; the molding temperature of the three PC materials is 260-310 ℃, and the molding temperature of the selected AES material is required to be lower than the molding temperature of the three PC materials.

Example two:

the difference from the first embodiment is only that the positions of the sapphire blue PC layer 2 and the highlight black PC layer 3, which are bonded to the transparent PC layer 1, are different, and as shown in fig. 4, the hard coating layer 6, the transparent PC layer 1, the highlight black PC layer 3, and the sapphire blue PC layer 2 are sequentially arranged from the outer layer to the inner layer of the part as seen from the cross-sectional view of the overlapped part.

With this structure, the protection of the protective coating 5 is also not required. Wherein, the hard coating 6 and the transparent PC layer 1 are combined to present a high transparent crystal effect; the high bright black PC layer 3 shows a high bright black effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the sapphire blue PC layer 2 presents a sapphire blue effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the sapphire blue PC layer 2 is shielded by the high-brightness black PC layers 3, cannot be displayed on the appearance surface and is perfectly shielded, so that a sapphire blue effect in a thin area can be displayed to the appearance, under the irradiation of sunlight and sufficient peripheral light sources, a blue stripe-shaped light effect is emitted or thin characters emit light effects in the daytime, the boundary is clear, and new energy sense is displayed.

Example three:

the difference from the first embodiment is only that the positions of the sapphire blue PC layer 2 and the highlight black PC layer 3, which are combined with the transparent PC layer 1, are different, and as shown in fig. 5, as can be seen from the cross-sectional view of the overlapped part, the hard coating 6, the transparent PC layer 1, the sapphire blue PC layer 2 and the highlight black PC layer 3 are sequentially arranged from the outer layer to the inner layer of the part.

With this structure, the protection of the protective coating 5 is also not required. Wherein, the hard coating 6 and the transparent PC layer 1 are combined to present a high transparent crystal effect; the sapphire blue PC layer 2 presents a sapphire blue effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the high bright black PC layer 3 shows a high bright black effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the structure realizes the reverse wrapping of the high bright black PC layer 3 on the sapphire blue PC and the transparent PC layer 1, the whole form is very stable and firm, and the high bright black effect is formed in one step, but can be displayed at a plurality of positions such as the inner side and the outer side of blue; the highlight black PC layer 3 is shielded by the sapphire blue PC layer 2, cannot be presented to the appearance surface and is perfectly shielded.

Example four:

as shown in fig. 6, the surfaces of the three-color outer plates facing the inner plate insert in the embodiment are provided with PVD high-brightness silver layers 4, and the surfaces of the PVD high-brightness silver layers 4 are provided with protective coatings 5, wherein the PVD high-brightness silver layers 4 are arranged at the outermost surfaces of the three-color outer plates.

The cross-sectional view of the overlapped part shows that the hard coating 6, the transparent PC layer 1, the high-brightness black PC layer 3, the sapphire blue PC layer 2, the PVD high-brightness silver layer 4 and the protective coating 5 are sequentially arranged from the outer layer to the inner layer of the part. Wherein, the hard coating 6 and the transparent PC layer 1 are combined to present a high transparent crystal effect; the high bright black PC layer 3 shows a high bright black effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the sapphire blue PC layer 2 presents a sapphire blue effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the PVD high brightness silver layer 4 shows a high brightness high reflection silver mirror effect to the appearance surface through the hard coating 6 and the transparent PC layer 1; the part (overlapped part) of the sapphire blue PC layer 2 shielded by the highlight black PC layer 3, and the part (overlapped part) of the PVD highlight silver layer 4 shielded by the sapphire blue PC layer 2 and the highlight black PC layer 3 cannot be displayed on the appearance surface, and are therefore perfectly shielded.

When the icons of the first to third embodiments are manufactured, the following process is adopted:

as shown in fig. 7, steps C and D within the dashed box are not present.

Wherein, the hardened layer on the outer surface of the three-color outer plate A is sprayed; b is three-color injection molding of a three-color outer plate; c, performing PVD metal plating on the inner surface; d is an inner surface protective paint coating; e, inner plate insert injection molding.

A manufacturing process of a radar cover car logo with three-color appearance effect comprises the following steps:

s1: the transparent material, the high-brightness black material and the color material are sequentially subjected to injection molding by using a three-color injection molding machine to form a three-color outer plate, and the outer plate is taken out by a manipulator after the injection molding is finished;

s2: spraying a hard coating 6 on the outer side of the three-color outer plate after injection molding, spraying by using a mechanical arm during spraying, and taking out the product after the spraying;

s3: and transferring the product into a mold cavity of an injection molding machine, and performing injection molding on the inner side of the three-color outer plate by using the injection molding machine to finish the manufacturing.

As shown in fig. 8, it has a rotatable disc 7 and an injection molding device, the injection molding device includes a boiled transparent PC material one-time injection molding device 81, a black PC material two-time injection molding device 82 and a blue PC material three-time injection molding device 83, the disc 7 has one-time injection molding cavity 71, two-time injection molding cavity 72 and three-time injection molding cavity 73, one two-time injection molding cavity and one three-time injection molding cavity are respectively located at 120 °, 240 ° and 360 ° positions of the disc 7, the specific action mode is, one state: the primary injection molding cavity 71 is aligned with the primary injection molding device 81, the secondary injection molding cavity 72 is aligned with the secondary injection molding device 82, and the tertiary injection molding cavity 73 is aligned with the tertiary injection molding device 83; the second state: the primary injection molding cavity 71 is aligned with the secondary injection molding device 82, the secondary injection molding cavity 72 is aligned with the tertiary injection molding device 83, and the tertiary injection molding cavity 73 is aligned with the primary injection molding device 81; three states: the once-injection molding cavity 71 is aligned with the three-time injection molding device 83, the twice-injection molding cavity 72 is aligned with the once-injection molding device 81, and the three-time injection molding cavity 73 is aligned with the twice-injection molding device 82, so that a product in the once-injection molding cavity 71 is subjected to three-color molding, ejection and part taking are realized, the mold adopts an inverted structure, and the disc 7 rotates and the injection molding device is fixed during production. The mould adopts a hot runner system, all the hot runner systems are controlled by sequence valves, the injection molding start and end time of each point position needs to be adjusted by a valve needle, a material handle is not allowed at the front end, and the ejection system is only started at the third color (blue PC) position and a manipulator is used for taking a part.

Before step S1, the transparent PC material, the highlight black PC material, and the sapphire blue PC material are dried at 100-120 ℃ for 4-8H, and then sucked into the primary injection molding device 81, the secondary injection molding device 82, and the tertiary injection molding device 83, respectively. The barrel temperature was set at 290-310 ℃. Three-colour PC layer shaping link needs key management and control speed of moulding plastics, injection pressure, pressurize pressure, dwell time, mould temperature, cooling time isoparametric, because each product size, weight diverse, consequently above-mentioned management and control parameter need carry out concrete debugging, treats behind the outward appearance, the dimensional stability of the product of making, and each technological parameter of record is reserve. The performance of the corresponding part is particularly sensitive to the thickness, so that the thickness of the semi-finished product needs to be strictly controlled, the first and last piece detection and the sampling inspection can be carried out, and the thickness tolerance of the semi-finished product needs to be controlled according to +/-0.05 mm. The three-color link provided by the scheme is particularly important, the original plastic particles must be uniformly colored, and the minimum width of the plastic particles in the size of an area arranged on a product cannot be smaller than 0.8mm.

Before the step S3, drying the material ions of the inner plate insert at 80-90 ℃ for 3-4H, in the step S3, controlling the temperature of a charging barrel to be 200-230 ℃, adopting injection molding pressure of more than 40MPa during injection molding, wherein the injection molding speed is more than 20mm/S, the pressure maintaining pressure is more than 5MPa, the pressure maintaining time is more than 1S, and the mold temperature is more than 70 ℃, performing inner plate insert injection molding, so that the back clamping mounting structure and the outer cover are integrated, completing the whole manufacturing process, and then taking the part by a mechanical arm and feeding the part to an inspection area.

In this embodiment, the whole number of finished products needs to be subjected to thickness detection and millimeter wave transmission performance detection. The thickness is controlled within a tolerance range of +/-0.1 mm, the evaluated area is a square or oval range taking the center of the cambered surface of the front surface of the vehicle logo as the center, the evaluation area is determined according to the irradiation range of the relevant radar, and the inspection items of the wave transmission performance are attenuation, reflection and angle errors. Wherein the attenuation is not allowed to exceed 1.5dB in one direction or 3.0dB in two directions, and the requirement is satisfied that the reflection value is less than-15 dB, and the angle error caused by the process is not allowed to exceed +/-0.3 deg.

Regarding the wave-transparent area, it is necessary to ensure that the emblem completely covers the irradiation area of the radar, and the wall thickness within the irradiation area must be uniform, all the claws, the screw posts, the lettering information, and the structures on the corresponding environment members (grids) must be arranged outside the irradiation area of the radar, interference of the internal structures with the irradiation area of the radar is strictly prohibited after the assembly error range of the radar and the emblem is included, and breakage or detachment due to thermal deformation or external impact is not allowed within the irradiation area of the radar.

In the fourth embodiment, the following process is adopted:

s1: the transparent material, the high-brightness black material and the color material are sequentially subjected to injection molding by using a three-color injection molding machine to form a three-color outer plate, and the outer plate is taken out by a manipulator after the injection molding is finished;

s11: the special shielding jig is customized according to the actual shape of a product, the part which does not need to be subjected to PVD is shielded, then the product loaded with the shielding jig is hung into a PVD furnace by using a mechanical arm, and before and after plating, the contact or wiping of a film coating area is strictly forbidden so as to prevent foreign matters from polluting an inner layer.

After finishing hanging, closing the furnace, vacuumizing, starting PVD operation until the PVD coating process is finished, and taking a workpiece by using a manipulator and hanging the workpiece; then, carrying out protective coating on the product finished by the PVD operation, and adopting thermal curing protective coating;

specifically, a thermal curing protective coating is used for protecting the PVD coating. The used protective layer coating needs to be stored in a shade place with the temperature of 20-30 ℃ and the humidity of 60 +/-15 percent, and the density of the protective layer coating is 0.6-0.7g/cm ³ It is not easy to volatilize. And directly curing at 70-80 ℃ on line for 40 minutes, wherein the thickness of the cured film is 15-20 mu m. And then immediately brought on line and sent to an insert molding station.

S2: spraying a hard coating 6 on the outer side of the three-color outer plate after injection molding, spraying by using a mechanical arm during spraying, and taking out the product after the spraying;

s3: and transferring the product into a mold cavity of an injection molding machine, and performing injection molding on the inner side of the three-color outer plate by using the injection molding machine to finish the manufacturing.

The remaining technical features are the same as those of the first to third manufacturing embodiments.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. The utility model provides a three-colour outward appearance effect radome car logo which characterized in that: including three-colour planking and inner panel inserts, the three-colour planking includes transparent material layer, and the outside on transparent material layer is provided with the hardcoat, and the inboard on transparent material layer is provided with high bright black material layer and color material layer, the inner panel inserts is fixed with the inboard of three-colour planking, the material on transparent material layer, high bright black material layer and color material layer is PC, ASA or AES, the material of inner panel inserts is AES, ASA or ABS.

2. The three-color appearance effect radome emblem of claim 1, wherein: the transparent material layer, the high bright black material layer and the colored material layer of three-colour planking are injection moulding, inner panel inserts injection moulding is in the inboard of three-colour planking.

3. The three-color appearance effect radome emblem of claim 2, wherein: the difference value of the dielectric constants of each two layers of materials in the transparent material layer, the highlight black material layer and the color material layer of the three-color outer plate is less than 0.1; the difference between the dielectric constant of the inner plate insert material and the dielectric constant of the material in the three-color outer plate is +/-0.15.

4. The three-color appearance effect radome emblem of claim 3, wherein: the surface of the three-color outer plate facing the inner plate insert is provided with a PVD (physical vapor deposition) high-brightness silver layer, and the surface of the PVD high-brightness silver layer is provided with a protective coating.

5. A manufacturing process of a three-color radar cover car logo with appearance effect is characterized by comprising the following steps:

s1: the transparent material, the high-brightness black material and the color material are sequentially subjected to injection molding by a three-color injection molding machine to form a three-color outer plate, and the three-color outer plate is taken out by a manipulator after the injection molding is finished;

s2: spraying a hard coating on the outer side of the injection-molded three-color outer plate, adopting a mechanical arm for spraying, and taking out the product after the spraying is finished;

s3: and transferring the product into a mold cavity of an injection molding machine, and performing injection molding on the inner side of the three-color outer plate by using the injection molding machine to finish the manufacturing.

6. The process of manufacturing a three-color appearance effect radar-covered car logo according to claim 5, wherein before step S2, the process further comprises step S11: customizing a special shielding jig according to the actual shape of a product, shielding the part which does not need to be subjected to PVD, hanging the product loaded with the shielding jig into a PVD furnace by using a manipulator, closing the furnace after finishing hanging, vacuumizing, starting PVD operation until the PVD coating process is finished, and taking a workpiece by using the manipulator and hanging the workpiece downwards; and performing protective coating on the product subjected to the PVD operation, and performing thermal curing on the protective coating.

7. The process of making a three-color appearance effect radome emblem of claim 6, wherein: the transparent material, the high-brightness black material and the color material are made of PC, the molding temperature of the three PC materials is 260-310 ℃, and the molding temperature of the inner plate insert material is lower than the molding temperature of the three PC materials.

8. The process of making a three-color appearance effect radome emblem of claim 7, wherein: before step S1, the transparent material, the highlight black material and the color material particles are respectively dried at 100-120 ℃ for 4-8H, and then sent to a three-color injection molding machine, wherein the temperature of a charging barrel is 290-310 ℃.

9. The process of making a three-color appearance effect radar-covered emblem of claim 8, wherein: before the step S3, drying the material ions of the inner plate insert at 80-90 ℃ for 3-4H, wherein in the step S3, the temperature of the charging barrel is 200-230 ℃, and the injection molding pressure of more than 40MPa is adopted during injection molding, the injection molding speed is more than 20mm/S, the pressure maintaining pressure is more than 5MPa, the pressure maintaining time is more than 1S, and the mold temperature is more than 70 ℃.

10. The process of making a three-color appearance effect radar-covered emblem of claim 9, wherein: in step S11, when the thermosetting protective coating is adopted, the protective coating needs to be stored in a shade place with the temperature of 20-30 ℃ and the humidity of 60 +/-15%, the density of the protective coating is 0.6-0.7g/cm < 3 >, the protective coating is directly cured on line at the temperature of 70-80 ℃, the curing time is 40 minutes, and the thickness of the cured coating is 15-20 μm.

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