CN116357919A - Double-color marker lamp lens and manufacturing method thereof - Google Patents

Double-color marker lamp lens and manufacturing method thereof Download PDF

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Publication number
CN116357919A
CN116357919A CN202310070395.1A CN202310070395A CN116357919A CN 116357919 A CN116357919 A CN 116357919A CN 202310070395 A CN202310070395 A CN 202310070395A CN 116357919 A CN116357919 A CN 116357919A
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China
Prior art keywords
glass
black glass
area
thickness
hollowed
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Pending
Application number
CN202310070395.1A
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Chinese (zh)
Inventor
施凯文
沈亮涵
申露华
黄梦桃
周旭
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SAIC GM Wuling Automobile Co Ltd
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SAIC GM Wuling Automobile Co Ltd
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Priority to CN202310070395.1A priority Critical patent/CN116357919A/en
Publication of CN116357919A publication Critical patent/CN116357919A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • B29D11/0074Production of other optical elements not provided for in B29D11/00009- B29D11/0073
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/12Composite shades, i.e. shades being made of distinct parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/26Manufacturing shades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2104/00Exterior vehicle lighting devices for decorative purposes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10Use or application of lighting devices on or in particular types of vehicles for land vehicles

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention belongs to the field of double-color marker light lenses, and particularly relates to a double-color marker light lens and a manufacturing method thereof, wherein the double-color marker light lens comprises black glass and white glass which are formed by injection molding, and a hollowed-out area for forming marker patterns is formed on the black glass; forming a thickening convex area corresponding to the hollowed-out area on the white glass; the thickened convex area is embedded into the hollowed-out area from the front surface of the black glass; the back of the non-hollow area on the black glass is provided with a drawing die inclined plane, the drawing die inclined plane is transited to the edge of the hollow area through the platform section, and the thickness of the platform section is equal to that of the thickened convex area, so that a flat angle is formed at the joint of the black glass and the white glass. And carrying out double-shot molding according to the designed white glass structure and the black glass structure, and spraying paint on the hollowed-out area of the black glass, wherein as the joint of the black glass and the white glass forms a flat angle, paint accumulation is avoided, and the paint accumulation position is transferred to the back surface of the black glass, namely the joint of the drawing die inclined plane and the platform section. The invention transfers the paint through the paint accumulation position, and simultaneously improves the appearance quality and the bonding strength.

Description

Double-color marker lamp lens and manufacturing method thereof
Technical Field
The invention belongs to the field of bicolor marker light lenses, and particularly relates to a bicolor marker light lens and a manufacturing method thereof.
Background
In the conventional design of the conventional vehicle type marker lamp lens, a single-color injection molding process for forming a logo light transmission area after laser carving is adopted, and a double-color injection molding process for omitting the laser carving process is also adopted. The double-color molding process is to form a front cover (white glass) of the marker light lens by using light-transmitting resin, form an inner layer (black glass) for shielding a light path by using non-light-transmitting resin, and form a logo light-transmitting area by using the inner layer hollowed-out logo.
Currently, in order to reduce the production cost of parts, a bicolor injection molding process is used for replacing a high-cost monochromatic injection post-treatment laser engraving process for marking lamp lenses on the market. Most of the existing marker light lens double-color splicing structures are black glass with a layer of hollowed logo-out shape added to the back surface of white glass, so that the logo and peripheral area can be uniformly attached after post-treatment paint spraying of the lens, and a pattern drawing angle of the logo periphery black glass is 45 degrees, and the design has the following obvious defects as shown in reference to fig. 1: in the process of spraying paint, paint can gather in logo border E department (figure 1) because of the effect of surface tension, and the appearance defect that appears comparatively obvious after the long-pending lacquer of different degree makes the part chromeplate, and the white limit can be seen in the serious position of long-pending lacquer for logo boundary discontinuity, very big influence static perception quality.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a bicolor marker light lens.
The invention is realized by the following technical scheme: a double-color marker light lens comprises injection-molded black glass and white glass, wherein a hollowed-out area for forming marker patterns is formed on the black glass; forming a thickening convex area corresponding to the hollowed-out area on the white glass; the thickened convex area is embedded into the hollowed-out area from the front surface of the black glass; the back of the non-hollow area on the black glass is provided with a pattern drawing inclined plane, the pattern drawing inclined plane is transited to the edge of the hollow area through the platform section, so that the non-hollow area of the black glass is spliced together through the thickened convex area of the platform section and the white glass, and the thickness of the platform section is equal to that of the thickened convex area, so that a flat angle is formed at the joint of the black glass and the white glass.
The invention also provides a manufacturing method of the bicolor marker light lens, which comprises the following steps:
design thickness d of white glass 0 Thickness d of black glass 2
Designing a black glass structure: designing a hollowed-out area of the black glass according to the mark pattern, and designing a pattern drawing inclined plane and a platform section on the back surface of a non-hollowed-out area of the black glass, wherein the pattern drawing inclined plane transits to the edge of the hollowed-out area through the platform section;
designing a white glass structure: a thickened convex area corresponding to the hollowed-out area is designed on the back surface of the white glass, and the thickness of the thickened convex area is equal to that of the platform section, so that a flat angle is formed at the joint of the black glass and the white glass after the thickened convex area is embedded into the hollowed-out area;
design of the thickness d of the thickened convex region 1 And the length l of the platform section;
performing double-shot molding according to the designed white glass structure and black glass structure to obtain a black glass-white glass splicing structure;
and the hollow area of the black glass is sprayed with paint, and as the joint of the black glass and the white glass forms a flat angle, paint accumulation is avoided, and the paint accumulation position is transferred to the back surface of the black glass, namely the joint of the drawing die inclined surface and the platform section.
Further, a metal layer is plated on the hollow area after paint spraying, so that the hollow area presents a metal color in a non-lighting state.
Further, the thickness d of the white glass is designed according to the minimum wall thickness capable of enabling the used injection molding material to meet the strength requirement 0 Thickness d of black glass 2
Further, the thickness d of the thickened convex region is designed according to the wall thickness requirement that no shrink printing occurs 1 : thickening the thickness of the raised regiond 1 Should not be less than 1mm and not more than 0.6d 0
Further, according to the thickness d of the injection molding material in the thickened convex region 1 The minimum dimension that meets normal injection pressure designs the platform section length l.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention improves the black glass structure and the white glass structure at the same time: the thickened convex area is added on the white glass, the platform section is added on the black glass, a new embedded splicing structure is formed, and a flat angle is formed at the joint of the black glass and the white glass, so that paint accumulation is not easy to occur at the flat angle relative to an acute angle and an obtuse angle; the paint accumulation position is transferred to the back surface of the black glass, namely the junction of the drawing inclined surface and the platform section, white edges generated after paint accumulation are shielded by the black glass and cannot be visually perceived, and the static perception quality is improved.
2. The junction of black glass and white glass forms the flat angle, does not take place the cross-section abrupt change, consequently be difficult to produce the crackle in the junction of black glass and white glass, cross-section abrupt change (the junction of draft inclined plane and platform section) all is located black glass simultaneously, the inside intermolecular force of black glass is greater than the shrink energy, be difficult to produce the crackle on black glass, just be difficult to take place the phenomenon that paint got into the crackle then, improve product quality and life-span, can keep the intensity of bonding force between black glass and the white glass for a long time, unexpected effect has been obtained.
3. The platform section increases the bonding area of the black glass and the white glass, and simultaneously, due to the fact that the thickening convex area of the white glass is embedded into the hollowed-out area of the black glass, the combination between the black glass and the white glass is firmer, and the product quality and the service life are improved.
4. The periphery of the hollowed-out area is transited to the non-hollowed-out area through the platform section, so that the product is easier to injection mold, the injection molding pressure is reduced, the production cost is reduced, and meanwhile, the stability of production equipment is improved.
5. The size of the thickened convex region is designed to avoid the reduction of marks caused by abrupt thickness changes.
Drawings
FIG. 1 is a schematic diagram of a prior art dual-color sign light lens;
FIG. 2 is a schematic view of the structure of a white glass in the present embodiment;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic diagram of a split structure of white glass and black glass;
FIG. 5 is a schematic diagram of a dual-color sign lens according to the present embodiment;
fig. 6 is a B-B cross-sectional view of fig. 5.
Detailed Description
Most of the existing marker light lens double-color splicing structures are black glass with a layer of hollowed logo-out shape added to the back of white glass, so that the logo and peripheral areas can be uniformly attached after post-treatment paint spraying of the lens, a pattern drawing angle of the logo peripheral black glass is 45 degrees, and the design has obvious defects in appearance quality as shown in reference to FIG. 1: (1) In the process of spraying paint, paint can gather in logo border E department (figure 1) because of the effect of surface tension, and the appearance defect that appears comparatively obvious after the long-pending lacquer of different degree makes the part chromeplate, and the white limit can be seen in the serious position of long-pending lacquer for logo boundary discontinuity, very big influence static perception quality.
The existing marker light lens double-color splicing structure has structural defects:
(2) Because the black glass of the logo circumference is sharp, the wall thickness is thinner, PMMA molecular chains at the sharp corners are cooled and fixed without enough time to recover to a crimping state with the lowest energy in the mold forming process, and the molecular chains are heated to obtain energy to shrink again in the subsequent annealing process, and when the energy is larger than the acting force between the black glass molecules of Bai Bo, cracking phenomenon occurs at the logo circumference E (figure 1). And after the tail end starts to have micro cracks, the organic solvent in the paint can continuously remain in the cracks at the two-color splicing position in the paint spraying process, and the bonding force between the two colors can be weaker and weaker after the organic solvent is soaked, so that the cracking of the lens at the two-color splicing position can be greatly accelerated, and the cracking phenomenon is more and more serious.
(3) The wall thickness of the position is thinner due to the sharp angle design of the black glass of the logo periphery, and larger injection molding and pressure maintaining pressure are needed in the injection molding process, otherwise, short shot is easily formed at the black glass sharp angle, so that the uneven appearance defect of the logo periphery is caused, and the quality is influenced; the use of larger injection molding pressure for molding results in narrower molding process window, serious loss of machine equipment in the production process, and reduced service life of the mold.
The present invention overcomes the above-mentioned drawbacks and is further described in detail below with reference to the accompanying drawings:
a method of manufacturing a bi-color marker light lens comprising the steps of:
s1: design thickness d of white glass 0 Thickness d of black glass 2 The method comprises the steps of carrying out a first treatment on the surface of the According to the filling requirement that the injection molding material can meet the strength requirement and the shrink mark does not occur, the thickness d of the white glass is designed 0 Thickness d of black glass 2 . In the invention, white glass refers to a transparent injection molding piece, and black glass refers to a non-transparent injection molding piece.
S2: designing a black glass structure: and designing a hollowed-out area of the black glass according to the mark pattern, and designing a pattern drawing inclined plane and a platform section on the back surface of the non-hollowed-out area of the black glass, wherein the pattern drawing inclined plane is transited to the edge of the hollowed-out area through the platform section. The periphery of the hollowed-out area is transited to the non-hollowed-out area through the platform section, so that the product is easier to injection mold, the injection molding pressure is reduced, the production cost is reduced, and meanwhile, the stability of production equipment is improved.
S3: designing a white glass structure: and designing a thickening convex area corresponding to and matched with the hollowed-out area on the back surface of the white glass, wherein the thickness of the thickening convex area is equal to that of the platform section, so that a flat angle is formed at the joint of the black glass and the white glass after the thickening convex area is embedded into the hollowed-out area.
S4: design of the thickness d of the thickened convex region 1 And the length l of the platform section; the thickness d of the thickened convex region is designed according to the wall thickness requirement that no shrink printing occurs 1 : thickness d of thickened convex region 1 Should not be less than 1mm and not more than 0.6d 0 . According to the thickness d of the injection molding material in the thickened convex region 1 And the length l of the platform section is designed to meet the requirement of normal injection molding pressure.
S5: and performing double-shot molding according to the designed white glass structure and black glass structure (designing corresponding molds according to the white glass structure and the black glass structure, and performing injection molding by adopting the molds) to obtain the black glass-white glass splicing structure.
The junction of black glass and white glass forms the flat angle, does not take place the cross-section abrupt change, consequently in injection moulding in-process, be difficult to produce the crackle at the junction of black glass and white glass, cross-section abrupt change (the junction of draft inclined plane and platform section) all is located black glass simultaneously, and the intermolecular force of black glass is greater than the shrink energy, is difficult to produce the crackle on black glass.
S6: and the hollow area of the black glass is sprayed with paint, and as the joint of the black glass and the white glass forms a flat angle, paint accumulation is avoided, and the paint accumulation position is transferred to the back surface of the black glass, namely the joint of the drawing die inclined surface and the platform section.
The joint of the black glass and the white glass forms a flat angle, and paint accumulation is not easy to occur at the flat angle relative to an acute angle and an obtuse angle; the paint accumulation position is transferred to the back surface of the black glass, namely the junction of the drawing inclined surface and the platform section, white edges generated after paint accumulation are shielded by the black glass and cannot be visually perceived, and the static perception quality is improved.
S7: and plating a metal layer on the hollow area after paint spraying, so that the hollow area presents a metal color in a non-lighting state, and the internal structure of the lamp is prevented from being exposed through transparent glass. After the paint is sprayed, the metal layer can be better attached to the surface of the product, and can be plated with chromium, zinc, copper and the like.
Referring to fig. 2 to 6, the structure of the dual-color marker light lens manufactured according to the above method includes a black glass 2 and a white glass 1 that are injection molded, and a hollowed-out area 202 for forming a marker pattern is formed on the black glass 2; a thickened convex area 101 is formed on the white glass 1 corresponding to the hollowed-out area 202; the thickened convex region 101 is embedded into the hollowed-out region 202 from the front surface of the black glass 2; the back of the non-hollow area on the black glass 2 is provided with a pattern drawing inclined plane, the pattern drawing inclined plane is transited to the edge of the hollow area 202 through the platform section 201, so that the non-hollow area 202 of the black glass 2 is spliced with the thickening convex area 101 of the white glass 1 through the platform section 201, and the thickness of the platform section 201 is equal to the thickness of the thickening convex area 101, so that a flat angle is formed at the joint of the black glass 2 and the white glass 1.
The bonding area of the black glass 2 and the white glass 1 is increased by the platform section 201, and meanwhile, due to the fact that the thickened convex area 101 of the white glass 1 is embedded into the hollowed-out area 202 of the black glass 2, the combination between the black glass 2 and the white glass 1 is firmer, and the product quality and the service life are improved.
Referring to fig. 6, since the junction of the black glass 2 and the white glass 1 forms a flat angle, paint accumulation is avoided, and the paint accumulation position is transferred to the back surface of the black glass, namely the junction F of the drawing inclined surface and the platform section.
In the specific embodiment, injection molding materials adopted by the white glass 1 and the black glass 2 are PMMA; thickness d of white glass 1 0 Is a range of values: d is less than or equal to 2.3mm 0 Less than or equal to 2.7mm; thickness d of black glass 2 2 The value range of (2.3 mm is less than or equal to d) 2 Less than or equal to 2.7mm. Preferably, d 0 =d 2 =2.5mm。
In this embodiment, the thickness d of the thickened convex region 101 1 D is 1mm or less 1 Less than or equal to 1.5mm; the thickness ensures that the white glass 1 does not generate shrinkage marks (the shrinkage marks are shrinkage pits generated in the injection molding and cooling process of plastic parts), and the white glass is free from short shot (lack of glue) during independent filling, thereby meeting the requirement of normal injection molding pressure.
In the present embodiment, the length l of the platform section 201 is 1 mm.ltoreq.l.ltoreq.1.5 mm, and the thickness d of the raised area 101 is thickened 1 (plateau 201 has a thickness equal to the thickness d of the thickened convex region 101 1 ) The dimensions satisfying the normal injection molding pressure.
In this embodiment, the draft angle of the draft inclined plane is 45 °, and the draft is easy.
The foregoing technical solution is only one embodiment of the present invention, and various modifications and variations can be easily made by those skilled in the art based on the principles disclosed in the present invention, and are not limited to the technical solutions described in the foregoing specific examples of the present invention, therefore, the foregoing description is only preferred and not in any limiting sense.

Claims (10)

1. The double-color marker light lens is characterized by comprising black glass and white glass which are formed by injection molding, wherein a hollowed-out area for forming marker patterns is formed on the black glass; forming a thickening convex area corresponding to the hollowed-out area on the white glass; the thickened convex area is embedded into the hollowed-out area from the front surface of the black glass; the back of the non-hollow area on the black glass is provided with a pattern drawing inclined plane, the pattern drawing inclined plane is transited to the edge of the hollow area through the platform section, so that the non-hollow area of the black glass is spliced together through the thickened convex area of the platform section and the white glass, and the thickness of the platform section is equal to that of the thickened convex area, so that a flat angle is formed at the joint of the black glass and the white glass.
2. The bi-color beacon light lens of claim 1, wherein the white glass and the black glass are both made of PMMA; thickness d of white glass 0 Is a range of values: d is less than or equal to 2.3mm 0 Less than or equal to 2.7mm; thickness d of black glass 2 The value range of (2.3 mm is less than or equal to d) 2 ≤2.7mm。
3. The bi-color beacon light lens of claim 2, wherein d 0 =d 2 =2.5mm。
4. A bi-color beacon light lens as claimed in claim 3, wherein the thickness d of the thickened convex region 1 D is 1mm or less 1 Less than or equal to 1.5mm; the length l of the platform section is more than or equal to 1mm and less than or equal to 1.5mm.
5. The bi-color sign light lens of claim 1 wherein the draft angle of the draft bevel is 45 °.
6. A method of manufacturing a bi-color marker light lens comprising the steps of:
design thickness d of white glass 0 Thickness d of black glass 2
Designing a black glass structure: designing a hollowed-out area of the black glass according to the mark pattern, and designing a pattern drawing inclined plane and a platform section on the back surface of a non-hollowed-out area of the black glass, wherein the pattern drawing inclined plane transits to the edge of the hollowed-out area through the platform section;
designing a white glass structure: a thickened convex area corresponding to the hollowed-out area is designed on the back surface of the white glass, and the thickness of the thickened convex area is equal to that of the platform section, so that a flat angle is formed at the joint of the black glass and the white glass after the thickened convex area is embedded into the hollowed-out area;
design of the thickness d of the thickened convex region 1 And the length l of the platform section;
performing double-shot molding according to the designed white glass structure and black glass structure to obtain a black glass-white glass splicing structure;
and the hollow area of the black glass is sprayed with paint, and as the joint of the black glass and the white glass forms a flat angle, paint accumulation is avoided, and the paint accumulation position is transferred to the back surface of the black glass, namely the joint of the drawing die inclined surface and the platform section.
7. The method of manufacturing a bi-color beacon light lens of claim 6, wherein the painted hollowed-out area is plated with a metal layer such that the hollowed-out area exhibits a metallic color in a non-lighted state.
8. The method of manufacturing a two-color marker light lens according to claim 6, wherein the thickness d of the white glass is designed so that the injection molding material used satisfies the strength requirement and the filling requirement without occurrence of offset 0 Thickness d of black glass 2
9. The method of manufacturing a bi-color sign light lens according to claim 8, wherein the thickness d of the thickened convex region is designed according to a wall thickness requirement that no shrink printing occurs 1 : thickness d of thickened convex region 1 Should not be less than 1mm and not more than 0.6d 0
10. The method of manufacturing a dual color marker light lens according to claim 9, wherein the thickness d of the injection molding material in the thickened convex region is set to 1 And the length l of the platform section is designed to meet the requirement of normal injection molding pressure.
CN202310070395.1A 2023-01-31 2023-01-31 Double-color marker lamp lens and manufacturing method thereof Pending CN116357919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310070395.1A CN116357919A (en) 2023-01-31 2023-01-31 Double-color marker lamp lens and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310070395.1A CN116357919A (en) 2023-01-31 2023-01-31 Double-color marker lamp lens and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN116357919A true CN116357919A (en) 2023-06-30

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ID=86926429

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310070395.1A Pending CN116357919A (en) 2023-01-31 2023-01-31 Double-color marker lamp lens and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN116357919A (en)

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