CN110181830B - Method for preventing soft and hard cross-connection lines of 3D mesh coated hardware - Google Patents
Method for preventing soft and hard cross-connection lines of 3D mesh coated hardware Download PDFInfo
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- CN110181830B CN110181830B CN201910499170.1A CN201910499170A CN110181830B CN 110181830 B CN110181830 B CN 110181830B CN 201910499170 A CN201910499170 A CN 201910499170A CN 110181830 B CN110181830 B CN 110181830B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
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Abstract
The invention discloses a method for avoiding the occurrence of soft and hard cross-connecting lines in a 3D mesh coating hardware, which is characterized in that the distance L between the edge of the 3D mesh and the edge of a part is determined according to the installation position of the 3D mesh on the part, and when L is more than or equal to 15mm, the depth h of a framework groove is D1‑d2(ii) a When L is less than or equal to 2-3 mm,
h1the distance from the framework groove to the edge of the 3D mesh is 20-30 mm; h is2The skeleton groove depth to the edge region of the 3D mesh; (4) preparing the part to be clad. According to the invention, the depth of the framework groove is adjusted by determining the compression amount of the 3D mesh and the compression amount generated by manual coating tension according to the installation position of the 3D mesh on the framework, so that the phenomenon of soft and hard cross-connection of the 3D mesh coating can be effectively avoided, and the obtained coating has good appearance quality.
Description
Technical Field
The invention relates to the technical field of coating of automotive upholsteries, in particular to a method for avoiding soft and hard cross-connection lines of a 3D mesh coating.
Background
Automobiles are more and more popular in China, and the requirements of Chinese people on the appearance quality of the automobiles are higher and higher, and particularly the requirements on the touch and shape of interior trim are higher. All manufacturers accelerate the rate of change, design more internal decorations for coating parts, and improve the attraction to people.
Cladding part, especially have cladding part of 3D mesh, the design in the past is all to place the 3D mesh with unified skeleton groove depth, and the degree of depth of skeleton groove depth is the same with the height of 3D mesh promptly, because the manual cladding of later stage corresponds the pulling force regional difference, and 3D mesh can receive the compression, leads to various appearance defects easily in process of production, and especially the mark appears easily in soft or hard handing-over department. In order to avoid appearance of soft and hard cross-connecting lines and influence on appearance quality, in the prior art, die adjustment is carried out in an area with obvious soft and hard cross-connecting traces. However, this method causes a design change and a die adjustment at a later stage of the part, and is labor-consuming and requires a large cost for adjusting the die.
According to the design method, different groove depths of the 3D mesh framework are designed according to the shape of a part product and different corresponding tension areas in later manual coating from the source, so that adjustment of a later mold is avoided, and manpower, material resources and mold repairing cost are saved.
Disclosure of Invention
The invention mainly solves the technical problem of providing a method for avoiding the occurrence of software and hardware cross-connection lines in a 3D mesh coating hardware, and can solve the problems.
In order to solve the technical problems, the invention adopts a technical scheme that: the method for avoiding the occurrence of soft and hard cross-connection lines in the 3D mesh coating hardware comprises the following steps:
(1) designing a part to be coated;
(2) determining the distance L between the edge of the 3D mesh and the edge of the part according to the installation position of the 3D mesh on the part;
(3) designing the depth h of the framework groove:
when L is more than or equal to 15mm,
h＝d1-d2；
in the formula (d)1Is the thickness of the 3D mesh; d2Is the process compression of the 3D mesh;
when the L is less than or equal to 3mm,
in the formula, h1The distance from the 3D mesh edge is the skeleton groove depth of the region beyond 20 mm;
in the formula, h2The depth of the skeleton groove reaching the 3D mesh edge area;
h1and h2The transition groove depth between the two grooves adopts a tangent connection mode for transition;
(4) preparing a part to be coated: preparing a part mould with the framework groove depth in the step (3) through an injection molding tool
Obtaining a part to be coated with a corresponding skeleton groove depth;
(5) forming a coating piece: filling the part to be coated obtained in the step (4) with 3D mesh, coating and pressing
And (4) combining to obtain the 3D mesh coating part without the soft and hard cross-linking lines on the surface.
In a preferred embodiment of the present invention, in the step (3), the h1＝d1-d2(ii) a H is2＝ d1-d2-d3；
In the formula (d)3The 3D mesh compression caused by edge wrapping tension;
in a preferred embodiment of the present invention, d is3The thickness of the 3D mesh is 65-75%.
In a preferred embodiment of the present invention, in the step (5), the pressing method includes thermal pressing or vacuum pressing
And (5) performing empty die pressing.
The invention has the beneficial effects that: the invention relates to a method for avoiding the occurrence of soft and hard cross-connection lines in a 3D mesh coating hardware, which comprises the following steps
Determining the compression amount of the 3D mesh and the compression amount generated by manual cladding tension according to the installation position of the 3D mesh on the framework
The groove depth of the framework is adjusted, the phenomenon of soft and hard cross-connection lines of the 3D mesh coating piece can be effectively avoided, and the obtained coating piece is good in appearance quality.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a preferred embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram of a preferred embodiment 3 of the present invention;
FIG. 4 is a schematic structural diagram of a preferred embodiment 4 of the present invention;
the parts in the drawings are numbered as follows: 1, skeleton, 2.3D mesh, 3, epidermis.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention can be realized
Will be more readily understood by those skilled in the art and will thus make clearer and more definitive definitions of the scope of protection of the invention.
Referring to fig. 1-4, an embodiment of the present invention includes:
the invention discloses a method for avoiding the occurrence of soft and hard cross-connection lines in a 3D mesh coating hardware, which is characterized by comprising the following steps
The method comprises the following steps:
(1) designing a part to be coated;
(2) determining the edge of the 3D mesh and the edge of the part according to the installation position of the 3D mesh on the part
The distance L of the rim;
(3) designing the depth h of the framework groove:
when L is more than or equal to 15mm,
h＝d1-d2；
in the formula (d)1Is the thickness of the 3D mesh; d2A process compression amount which is a 3D mesh, which is related to the density of the 3D mesh, is known in the art;
when L is less than or equal to 2-3 mm,
in the formula, h1 is the skeleton groove depth of the region beyond the distance of 20-30 mm from the edge of the 3D mesh, and h1＝d1-d2；
h2Skeleton groove depth to the edge region of 3D mesh, h2＝d1-d2–d3；
d3The 3D mesh compression caused by edge wrapping tension; d is3Is 65-75% of the thickness of the 3D mesh;
h1and h2The transition groove depth between the two grooves adopts a tangent connection mode for transition;
(4) preparing a part to be coated: preparing a part mold with the framework groove depth in the step (3), and obtaining a part to be coated with the corresponding framework groove depth through an injection molding process;
(5) forming a coating piece: and (4) filling the part to be coated obtained in the step (4) with 3D mesh, and coating and pressing to obtain a 3D mesh coating part without hard-soft junction lines on the surface.
The pressing method comprises hot-pressing compounding or vacuum mould pressing.
Example 1
Take the dashboard upper cover as an example.
The 3D mesh piece is arranged on the large surface area of the instrument panel upper cover, and the distance from the edge of the instrument panel upper cover framework is more than 15mm, as shown in the attached figure 1.
The cladding is 1.1mm with epidermis thickness, 2.2mm with 3D mesh thickness, skeleton thickness 2.6mm, carries out hot pressing complex after the cladding is accomplished, and 3D mesh is compressed about 1mm, pops out 0.8mm afterwards, and it is 0.2mm to be even its permanent compression, therefore required skeleton groove depth h ═ D1-d2＝2.2-0. 2＝2.0mm。
Because the 3D mesh is not attached to the boundary of the part, the 3D mesh is not subjected to the pulling force of manual edge covering, after the part is coated, hot-pressing compounding is required because the part is large and flat in shape, and the 3D mesh is compressed under the pressure of the hot-pressing compounding, namely, the compression amount is generated.
Example 2
The difference from embodiment 1 is that 3D mesh parts are installed on both sides of the upper cover of the instrument panel and the seam is located between the two 3D mesh parts, as shown in fig. 2.
The suture region does not generate manual edge wrapping tension on the 3D mesh, so that the 3D mesh is still only subjected to the action force of hot-pressing compounding to generate a certain compression amount of 0.2mm, and the required skeleton groove depth h ═ D1-d2＝2.2-0.2＝2.0mm。
Example 3
The difference from embodiment 2 is that the 3D mesh is installed at one side of the upper cover of the instrument panel as shown in fig. 3.
Example 4
Take the door trim as an example.
The 3D mesh piece is arranged on the surface of the ornament on the door panel, and the distance between the edge of the 3D mesh piece and the edge of the trim plate (framework) on the door panel is 2mm, as shown in the attached figure 4.
The thickness of the 3D mesh is 2.1mm and the thickness of the door plate upper decorative plate is 3mm after the coating surface is 1.2 mm. And performing vacuum die pressing after the coating is finished.
In the area with the distance from the edge of the 3D mesh being more than or equal to 20-30 mm, the thickness of the compressed 3D mesh is 1.9mm, namely the process compression amount is 0.2mm, and the depth h of the framework groove1Is 1.9 mm.
h2A skeleton groove depth in the region of 2mm distance from the edge of the 3D mesh, h2Is 0.5 mm; h is1And h2The transition groove depth between the grooves adopts a tangent connection mode for transition.
The invention discloses a method for avoiding the occurrence of soft and hard cross-connecting lines on a 3D mesh coating hardware, which is implemented on a framework according to the 3D mesh hardware
The installation position determines the compression amount of the 3D mesh and the compression amount generated by manual cladding tension to adjust the groove depth of the framework, and the method can effectively adjust the groove depth of the framework
The phenomenon of soft and hard cross-connecting lines of the 3D mesh coating piece is avoided, and the obtained coating piece is good in appearance quality.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A method for avoiding the occurrence of soft and hard cross-connection lines in a 3D mesh coating hardware is characterized by comprising the following steps:
(1) designing a part to be coated;
(2) determining the distance L between the edge of the 3D mesh and the edge of the part according to the installation position of the 3D mesh on the part;
(3) designing the depth h of the framework groove:
when L is more than or equal to 15mm,
h＝d1-d2；
in the formula (d)1Is the thickness of the 3D mesh; d2Is the process compression of the 3D mesh;
when the L is less than or equal to 3mm,
in the formula, h1The distance from the 3D mesh edge is the skeleton groove depth of the region beyond 20 mm; h is1＝d1-d2；
In the formula, h2The skeleton groove depth is the region 2mm away from the edge of the 3D mesh; h is2＝d1-d2-d3(ii) a In the formula (d)3Amount of 3D mesh compression due to hemming tension, D365-75% of the thickness of the 3D mesh;
h1and h2The transition groove depth between the two grooves adopts a tangent connection mode for transition;
(4) preparing a part to be coated: preparing a part mold with the framework groove depth in the step (3), and obtaining a part to be coated with the corresponding framework groove depth through an injection molding process;
(5) forming a coating piece: and (4) filling the part to be coated obtained in the step (4) with 3D mesh, and coating and pressing to obtain a 3D mesh coating part without hard-soft junction lines on the surface.
2. The method for avoiding the occurrence of soft and hard cross-linking lines in the 3D mesh coating hardware as claimed in claim 1, wherein in the step (5), the pressing method comprises hot-press compounding or vacuum die pressing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910499170.1A CN110181830B (en) | 2019-06-11 | 2019-06-11 | Method for preventing soft and hard cross-connection lines of 3D mesh coated hardware |
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| CN201910499170.1A CN110181830B (en) | 2019-06-11 | 2019-06-11 | Method for preventing soft and hard cross-connection lines of 3D mesh coated hardware |
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| CN110181830B true CN110181830B (en) | 2021-07-13 |
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| CN101547812A (en) * | 2006-05-25 | 2009-09-30 | 约翰逊控制技术公司 | Molded article including decorative element and method of attaching a decorative element to a vehicle component |
| CN204432561U (en) * | 2014-12-26 | 2015-07-01 | 东风伟世通汽车饰件***有限公司 | A kind of door panel arm rest skeleton seam wire casing structure |
| CN104908328A (en) * | 2015-06-03 | 2015-09-16 | 常熟英提尔汽车饰件有限公司 | Automobile dashboard coating process |
| CN109398256A (en) * | 2018-10-01 | 2019-03-01 | 辽宁金兴汽车内饰有限公司 | Automobile interior decoration sewing and cladding process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2880835B1 (en) * | 2005-01-19 | 2009-03-13 | Visteon Global Tech Inc | METHOD FOR MANUFACTURING A COMPOSITE PIECE COMPRISING AT LEAST TWO DIFFERENT ASPECTS OR TOUCHERS |
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- 2019-06-11 CN CN201910499170.1A patent/CN110181830B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| CN101547812A (en) * | 2006-05-25 | 2009-09-30 | 约翰逊控制技术公司 | Molded article including decorative element and method of attaching a decorative element to a vehicle component |
| CN204432561U (en) * | 2014-12-26 | 2015-07-01 | 东风伟世通汽车饰件***有限公司 | A kind of door panel arm rest skeleton seam wire casing structure |
| CN104908328A (en) * | 2015-06-03 | 2015-09-16 | 常熟英提尔汽车饰件有限公司 | Automobile dashboard coating process |
| CN109398256A (en) * | 2018-10-01 | 2019-03-01 | 辽宁金兴汽车内饰有限公司 | Automobile interior decoration sewing and cladding process |
Non-Patent Citations (1)
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