CN108748984B

CN108748984B - Vehicle lamp part and preparation method thereof

Info

Publication number: CN108748984B
Application number: CN201810605936.5A
Authority: CN
Inventors: 卢梦奇; 顾丹; 赵磊; 黄达; 赵晶晶
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2018-06-13
Filing date: 2018-06-13
Publication date: 2020-10-16
Anticipated expiration: 2038-06-13
Also published as: CN108748984A

Abstract

The invention provides a vehicle lamp component and a preparation method thereof, wherein the preparation method comprises the following steps: (A) adding one of liquid polymer material, polymer material solid powder and metal powder together with a cosolvent and a refiner for 3D printing; (B) the heating temperature is controlled between 210 ℃ and 240 ℃, and the material is obtained by sintering and molding. The preparation method provided by the invention has the advantages that the operation steps are fully simplified, the operation is simple, the product is constructed into a 3D unit by adopting a 3D printing method and a layer-by-layer stacking principle, the product is molded in a heating and curing mode after the construction to obtain a finished product, the structural mechanical property and the surface roughness of the product are optimized in the whole manufacturing process by adding a solvent and a refiner, the product performance and the appearance performance similar to those of an injection mold product can be realized without post-treatment after the product is printed, and the preparation method is worthy of wide popularization and application.

Description

Vehicle lamp part and preparation method thereof

Technical Field

The invention relates to the field of manufacturing and processing of automobile lamp parts, in particular to an automobile lamp part and a preparation method thereof.

Background

At present, in order to meet the modeling requirements and the special requirements of the light-emitting mode of more and more automobile lamps, modeling becomes more artistic, and more artistic design modes are used. How to realize the artistic modeling in the traditional automobile lamp meets the modeling requirement of the automobile lamp as far as possible and the requirement of customers, and becomes a new popular modeling trend. The artistic sense can be increased to a greater extent through the modeling, and the consumption intensity is improved.

In the prior art, in order to manufacture car lamp parts with variable shapes and more artistic appearance, the traditional realization mode is that the part product must meet the requirement of product mass production, meet the requirement of a mold, meet the requirement of part surface treatment, meet the requirement of part temperature resistance, meet the requirement of part appearance, and be realized by better matching with the mode of mold injection molding or stamping extrusion. However, in the conventional processing mode, the mold opening period of a mold product is long, the mold design and the mold opening period of a large mold product are often realized in more than about 100 days, and the shapes of parts cannot be changed. Therefore, the production mode of the traditional vehicle lamp parts seriously influences the basic requirements of fast product acquisition, small deformation, accurate fixation and excellent performance.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a preparation method of a vehicle lamp part, which avoids the adoption of a mode of injection molding or stamping extrusion for manufacturing, the operation steps are fully simplified, the operation is simple, the 3D printing method is adopted, the product is constructed into a 3D unit according to the principle of layer-by-layer stacking, the product is molded in a heating and curing mode after construction to obtain a finished product, the structural mechanical property and the surface roughness of the product are optimized in the whole manufacturing process by adding a solvent and a refiner, the product performance and the appearance performance similar to the injection mold product can be realized without post-treatment after the product is printed, the operation flow is greatly simplified, the operation efficiency is improved, and the preparation method is worthy of wide popularization and application.

The second purpose of the invention is to provide the car lamp part prepared by the preparation method of the car lamp part, and after the car lamp part is manufactured by adopting a specific 3D printing method, the performance of a product is improved, the resolution is high, the surface roughness of the product is improved, the surface is smooth and has no rough feeling, and the pursuit of people for modern car lamps with various shapes and more artistic appearance is fully satisfied.

In order to achieve the above purpose of the present invention, the following technical solutions are adopted:

the invention provides a preparation method of a vehicle lamp part, which comprises the following steps:

(A) adding one of liquid polymer material, polymer material solid powder and metal powder together with a cosolvent and a refiner for 3D printing;

(B) the printing temperature is controlled between 210 ℃ and 240 ℃, and the printing is obtained by sintering and molding.

In the modern times, if mass production is realized only through a simple mold mode, the special requirement of the car lamp for modeling sky horse running cannot be met, the product manufactured by the mold has a serious influence on the changeability of the appearance, the mold is difficult to inject and cannot be implemented, and therefore how to meet the requirement of a customer is achieved, the special modeling is easier to realize, the appearance is better, the data processing mode is simpler, and the wide attention of people is more and more aroused.

The invention solves the technical problems in the prior art by adopting a 3D printing mode, constructs a product into a 3D unit by adopting a 3D printing method and a layer-by-layer stacking principle, and molds the product in a heating and curing mode after construction to obtain a finished product.

The selection of the three main materials, namely, the liquid polymer material, the polymer material solid powder and the metal powder, is determined according to the specific characteristics of the vehicle lamp component to be manufactured, and the raw materials are selected according to actual conditions, and any one of the liquid material, the solid powder and the metal powder can be selected as the main material to manufacture the vehicle lamp component.

Preferably, in the step (a), the addition amount of the cosolvent is less than 10 wt%, the addition amount of the refiner is less than 5 wt%, and the balance is one of a liquid high molecular material, a high molecular material solid powder and a metal powder.

Preferably, the addition amount of the cosolvent is 1-7 wt%, and the addition amount of the refiner is 1-4 wt%.

Preferably, in the step (a), the metal powder includes one or more of an aluminum alloy powder, a titanium alloy powder, a magnesium alloy powder, and a copper-based alloy powder.

Preferably, in the step (a), the liquid polymer material and the polymer material in the polymer material solid powder include one or a mixture of several of polyurethane material, polyamide material and polyester material.

Preferably, in the step (a), the cosolvent includes one or more of sodium benzoate, sodium salicylate, p-aminobenzoic acid, urea, nicotinamide and acetamide.

Preferably, in the step (a), the refiner comprises one of a titanium boron refiner, an aluminum titanium boron block, a salt refiner and a sodium modifier.

Preferably, the thickness of the printing layer during printing is controlled below 0.08 mm.

The invention also provides the car lamp part prepared by the preparation method of the car lamp part, and the car lamp part can comprise one of a lens, a lamp body, a car lamp internal decorative ring, a reflector, a mounting bracket, an optical internal fitting, a light guide and a thick-wall injection molding.

The car lamp part prepared by the preparation method has improved surface roughness, smooth surface and no roughness, and fully meets the pursuit of people for the car lamp with changeable modern modeling and more artistic appearance.

Preferably, the resolution of the vehicle lamp component is over 1200 dpi.

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

(1) the preparation method of the automobile lamp part has the advantages that the operation steps are fully simplified, the operation is simple, the product is constructed into a 3D unit by adopting a 3D printing method and a layer-by-layer stacking principle, and the product is molded in a heating and curing mode after construction to obtain a finished product;

(2) the preparation method disclosed by the invention is simple in operation steps and mild in operation conditions, and the mechanical property and the surface roughness of the product structure are optimized in the whole manufacturing process by adding the solvent and the refiner, so that the product performance and the appearance performance similar to those of an injection mold product can be realized without post-treatment after the product is printed, the operation flow is greatly simplified, the operation efficiency is improved, and the preparation method is worthy of wide popularization and application;

(3) after the vehicle lamp part prepared by the invention is manufactured by adopting a specific 3D printing method, the performance of the product is improved, the resolution is high, the surface roughness of the product is improved, the surface is smooth and has no rough feeling, and the pursuit of people for modern vehicle lamps with changeable shapes and more artistic appearance is fully met.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

The selection of the three main materials of the liquid polymer material, the polymer material solid powder and the metal powder in the raw materials is determined according to the specific characteristics of the car lamp component to be manufactured, and the raw materials are selected according to actual conditions, and one of the liquid material, the solid powder and the metal powder can be selected as the main material to manufacture the car lamp component.

In the raw materials, the cosolvent is mainly filled in a material area needing to be molded, the molecular gap of the powder type material is completely filled, then the area materials needing to be cured are bonded together in a thermal energy control heating mode to form a solid continuous part, and the refiner is used for spraying and printing on the surface of the cured part, filling the part with higher surface roughness, optimizing the roughness of the product and improving the precision of the product.

Preferably, the addition amount of the cosolvent is 1-7 wt%, the addition amount of the refiner is 1-4 wt%, and the balance is one of a liquid high molecular material, a high molecular material solid powder and a metal powder.

The addition amount of the cosolvent in the invention may be 2 wt%, 3 wt%, 4 wt%, etc., and the addition amount of the refiner may be 1.5 wt%, 2.5 wt%, 3.5 wt%, etc.

The proportion of the added cosolvent and the added refiner can be adjusted according to the actual situation, but the addition amount cannot be too high, otherwise, the performance of the actually manufactured automobile lamp parts can be influenced.

Preferably, in the step (a), the metal powder includes one or more of an aluminum alloy powder, a titanium alloy powder, a magnesium alloy powder, and a copper-based alloy powder. When the preparation is carried out specifically, the temperature resistance is generally controlled between 200 ℃ and 400 ℃, and the layer thickness is controlled between 0.02mm and 0.1 mm.

The specific type of the polymer material is not particularly limited, and examples thereof include common engineering plastic materials, PC, PMMA, ABS, PC + ABS, PBT-based hybrid materials, PA 6-based hybrid materials, PC-based hybrid materials, PP-based hybrid materials, LCP-based hybrid materials, polycarbonate, polypropylene, and organic glass.

Preferably, the thickness of the printing layer during printing is controlled below 0.08mm to improve the quality of printing.

In the actual operation process, the stacking molding is performed in a laser sintering mode, the laser temperature needs to be controlled between 210 ℃ and 240 ℃, the product cannot be molded into an effective product due to the fact that the product is burnt at an excessively high temperature, the product is poorly molded due to the excessively low temperature, and the changeability characteristic exists, so that the appropriate operation temperature needs to be controlled in the 3D printing process.

The surface roughness of the car lamp part prepared by the preparation method is improved, the surface is smooth and has no rough feeling, and the pursuit of the modern car lamp with variable shape and more artistic appearance is fully met.

Preferably, the resolution of the vehicle lamp part is over 1200dpi, the resolution is high, and the definition is good.

In fact, any vehicle lamp component can be manufactured by the manufacturing method of the present invention, for example, parts for interior and exterior automotive lamps in general, and other parts that can be fixed and installed by injection molding can be manufactured by the manufacturing method of the present invention in addition to the vehicle lamp components listed above.

For example, common parts can be realized by surface treatment, including surface treatment modes of aluminizing, chroming, painting, hard films, antifogging coatings, laser engraving, hot stamping and the like which can be used on lamps, and can be realized on parts prepared by the preparation method.

The scheme of the invention is further illustrated by the following specific embodiments:

example 1

The preparation method of any one of the lens, the lamp body, the internal decorative ring of the car lamp, the reflector, the mounting bracket, the optical internal fitting, the light guide and the thick-wall injection molding piece is as follows:

1) the method comprises the following steps of placing a liquid nylon material in a 3D printing machine, and leading the machine to print a 3D product according to a digital-analog state through the introduction of a digital-analog;

2) the liquid nylon material is piled up and molded in a laser sintering mode in the printing process, the laser temperature is between 210 ℃ and 240 ℃, the heating and the curing are carried out to mold the product, and meanwhile, cosolvent sodium benzoate and refiner AlTiB are added to optimize the structural mechanical property and the surface roughness of the product;

3) after sintering and forming, the obtained lens product has the surface roughness below 0.01mm, the resolution above 1200dpi and the tensile strength above 15 MPa.

Example 2

The preparation method of any one of the lens, the lamp body, the inner decorative ring of the car lamp, the reflector and the mounting bracket comprises the following steps:

1) placing the aluminum alloy powder in a 3D printing machine, and leading the machine to print a 3D product according to a digital-analog state through the introduction of a digital-analog;

2) the aluminum alloy powder is subjected to stacking forming in a laser sintering mode in the printing process, the laser temperature is between 210 ℃ and 240 ℃, the aluminum alloy powder is heated and cured to form a product, and meanwhile, a cosolvent sodium salicylate and a salt refiner are added to optimize the structural mechanical property and the surface roughness of the product, wherein the aluminum alloy powder accounts for 85 wt%, the sodium salicylate accounts for 10 wt% and the salt refiner accounts for 5 wt% in mass percentage;

3) after sintering and forming, the obtained mounting bracket product has the surface roughness below 0.02mm, the resolution above 1200dpi and the tensile strength above 15 MPa.

Example 3

1) placing PP material solid powder in a 3D printing machine, and leading the machine to print a 3D product according to a digital-analog state through the introduction of a digital-analog;

2) the PP material solid powder is subjected to stacking forming in a laser sintering mode in the printing process, the laser temperature is between 210 ℃ and 240 ℃, heating and curing are carried out to form the product, cosolvent sodium salicylate and nicotinamide are added, and salt refiner is added to optimize the structural mechanical property and the surface roughness of the product, wherein in the mass ratio of each component, the PP material solid powder accounts for 91 wt%, the sodium salicylate and the nicotinamide account for 5 wt%, and the salt refiner accounts for 4 wt%;

3) after sintering and forming, the obtained reflector product has the surface roughness below 0.01mm, the resolution ratio above 1300dpi and the tensile strength above 16 MPa.

Example 4

2) the PP material solid powder is subjected to stacking forming in a laser sintering mode in the printing process, the laser temperature is between 210 ℃ and 240 ℃, heating and curing are carried out to form a product, cosolvent sodium salicylate and p-aminobenzoic acid are added at the same time, and aluminum titanium boron block refiner is added to optimize the structural mechanical property and the surface roughness of the product, wherein in the mass ratio of each component, the PP material solid powder accounts for 91 wt%, the sodium salicylate and the p-aminobenzoic acid account for 2 wt%, and the aluminum titanium boron block refiner accounts for 7 wt%;

Example 5

The other operation steps are consistent with those of example 4, except that 91 wt% of PP material solid powder, 1 wt% of sodium salicylate and p-aminobenzoic acid and 8 wt% of aluminum-titanium-boron block refiner are adopted, the detected surface roughness of the obtained reflector product is below 0.01mm, the resolution is above 1300dpi, and the tensile strength is above 16 MPa.

Comparative example 1

The surface roughness of a lens product obtained by detection is 0.05mm-0.06mm, the resolution is 1000dpi, and the tensile strength is 10MPa-13 MPa.

As can be seen from the above-mentioned method for manufacturing a vehicle lamp component, the vehicle lamp component manufactured by the method of the present invention is easy to handle, and the obtained vehicle lamp component is excellent in various performances.

While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

1. A method for manufacturing a vehicle lamp component is characterized by comprising the following steps:

(B) the printing temperature is controlled between 210 ℃ and 240 ℃, and the printing is obtained by sintering and molding;

the cosolvent is mainly filled in a material area needing to be formed, the gaps of the powder type material molecules are completely filled, and then the materials in the area needing to be solidified are bonded together in a thermal energy control heating mode to form a solid continuous part;

the refiner is used for spraying and printing on the surface of the solidified part and filling the part with higher surface roughness;

the cosolvent comprises one or more of sodium benzoate, sodium salicylate, p-aminobenzoic acid, urea, nicotinamide and acetamide;

the refiner comprises one of a titanium boron refiner, an aluminum titanium boron block, a salt refiner and a sodium modifier.

2. The method for manufacturing a vehicular lamp component according to claim 1, wherein in the step (a), an amount of the cosolvent is controlled to be 10 wt% or less, an amount of the refiner is controlled to be 5 wt% or less, and the balance is one of a liquid high molecular material, a solid powder of a high molecular material, and a metal powder.

3. The method for manufacturing a vehicular lamp component according to claim 2, wherein the amount of the co-solvent is controlled to be 1 to 7 wt%, and the amount of the refiner is controlled to be 1 to 4 wt%.

4. The method for manufacturing a vehicular lamp component according to any one of claims 1 to 3, wherein in the step (A), the metal powder comprises one or more of an aluminum alloy powder, a titanium alloy powder, a magnesium alloy powder and a copper-based alloy powder.

5. The method for manufacturing vehicular lamp components according to any one of claims 1 to 3, wherein in the step (A), the liquid polymer material and the polymer material in the polymer material solid powder comprise one or more of polyurethane materials, polyamide materials and polyester materials.

6. The method for manufacturing a vehicular lamp component according to claim 1, wherein a thickness of the printed layer during printing is controlled to 0.08mm or less.

7. The vehicular lamp component produced by the process for producing a vehicular lamp component according to any one of claims 1 to 6.

8. The vehicular lamp component according to claim 7, comprising one of a lens, a lamp body, a vehicular lamp inner bezel, a reflector, a mounting bracket, an optical trim, a light guide, and a thick-walled injection molded part.

9. The vehicular lamp component according to claim 7, wherein the resolution of the vehicular lamp component is 1200dpi or more.