JP2012240490A - Method of manufacturing sun visor for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a sun visor capable of reducing an inventory management burden by reducing the inventory number of sun visor, and capable of preventing deformation caused by printing, while securing proper printing of printing display.SOLUTION: A caution label 12 is printed on an outer surface of an assembling completed body 1A by using an inkjet printing method. Thus, even when there is a little recess-projection on the outer surface of the assembling completed body 1A, the caution label 12 can be properly printed at any time on the outer surface of the assembling completed body 1A, and the sun visor 1 having the caution label 12 different in a kind is not required for preparing in large numbers. Moreover, heat is not added to the assembling completed body 1A in the printing of the caution label 12.

Description

  The present invention relates to a method for manufacturing a vehicle sun visor having a printed display (caution label) on which notes and the like are printed.

The vehicle is provided with a vehicle sun visor. A vehicle sun visor generally has a configuration in which foamed beads are foamed to form a plate-shaped core material, and the outer surface of the foamed core material is covered with a skin. It is arrange | positioned above a windshield and can take a storing attitude | position position and a light-shielding attitude | position position. Thus, when the vehicle sun visor is positioned at the light blocking posture position, the vehicle sun visor shields direct sunlight and dazzling light from the headlights of the oncoming vehicle.

By the way, on the outer surface of such a vehicle sun visor, since the vehicle sun visor is in a position where it is easily noticeable, as shown in Patent Document 1, a printed display (for example, A caution label is printed. As a printing method of this print display, a screen printing method, a pad printing method, a label thermal transfer, and the like can be considered. However, even if any of these is used, unevenness generated during molding of the foam core material partially appears on the outer surface of the skin in the assembled sun visor, so printing is performed on the outer surface of the assembled sun visor. Cannot be done properly. For this reason, when manufacturing a sun visor, before assembling the sun visor (before the welder), printing is performed on the outer surface of the skin, which is an assembly part of the sun visor, on the flat work surface by the above printing method such as label thermal transfer. The sun visor is assembled using the epidermis.

JP 62-68812 A

However, there are many types of precautions, such as content, language of each country, etc., and as described above, a manufacturing method is used in which a printed display is printed on the outer surface of the epidermis before assembling and used to assemble it. In such a case, a large number of sun visors having various types of print displays must be prepared in order to respond to rapid shipment. For this reason, the sun visor has a lot of inventory, and the burden of inventory management is to increase.
Moreover, in addition to the above contents, in particular, in the printing method, when label thermal transfer is performed on the skin as an assembly part, it is necessary to apply heat (for example, about 130 to 150 ° C. for about 5 seconds). There is a risk of shrinkage and deformation.

The present invention has been made in view of such circumstances, and its purpose is to reduce the inventory management burden by reducing the number of inventory of sun visors while ensuring proper printing of the print display, as well as deformation associated with printing. An object of the present invention is to provide a method of manufacturing a sun visor that can prevent the above.

  The above object is achieved by the present inventions (1) to (7) below.

(1) A method of manufacturing a vehicle sun visor having a printed display on an outer surface,
A method of manufacturing a vehicle sun visor, wherein a printed display is printed on an outer surface of an assembled vehicle sun visor assembly using an ink jet printing method in which ink is directly ejected.
According to the above configuration, even if there is some unevenness on the outer surface of the assembled vehicle sun visor assembly, it is possible to print with a clear state at any time using the inkjet printing method, It is not necessary to prepare a large number of sun visors having different types of print displays in order to respond to rapid shipment.
In addition, since the inkjet printing method is used, it is not necessary to apply heat to the assembled assembly when printing is performed.

(2) As the assembled assembly, a foamed core material and a skin covering the outer surface of the foamed core material are formed.
The method of manufacturing a vehicle sun visor according to (1), wherein an outer surface of the skin is configured as an outer surface of the finished assembly, and the printed display is printed on the outer surface of the skin.
According to the said structure, even if the unevenness | corrugation at the time of foam molding of a foam core appears on a skin, a printing display can be appropriately printed on the outer surface of the skin by a non-contact state by using an inkjet printing system.

(3) As the skin, one made of vinyl chloride resin is used,
As ink used in printing by the inkjet printing method,
The method for producing a vehicle sun visor as described in (2), wherein a material containing 40 to 60% of acrylic acid ester is used.
According to the above configuration, even when a vinyl chloride skin is used, a print display can be accurately printed on the outer surface of the skin using an appropriate ink for the skin.

(4) Forming the assembly as a completed body including a mirror unit including an opening / closing lid,
The method for manufacturing a vehicle sun visor according to (1), wherein an outer surface of the opening / closing lid of the mirror unit is configured as an outer surface of the completed assembly, and the printed display is printed on the outer surface of the opening / closing lid. .
According to the above configuration, it is possible to avoid having a large number of sun visors having different types of print displays in stock by appropriately printing print displays on the outer surface of the opening / closing lid of the mirror unit as needed.

(5) The method for manufacturing a vehicle sun visor according to (4), wherein a primer treatment is performed as a pre-process for printing the print display on an outer surface of the opening / closing lid.
According to the above configuration, even if the material of the opening / closing lid of the mirror unit is not preferable from the viewpoint of ink characteristics compared to other materials of the assembled assembly, the primer treatment on the outer surface of the opening / closing lid, Appropriate printing can be performed on the outer surface of the open / close lid, as with other materials of the completed assembly.

(6) As an ink used in printing by the inkjet printing method, an ultraviolet curable ink that is cured by ultraviolet irradiation is used.
The method for manufacturing a vehicle sun visor according to (1), wherein a printed display is printed on an outer surface of the finished assembly, and then the printed display is irradiated with ultraviolet rays.
According to the said structure, the quick-drying property of a printing display can be improved using the ultraviolet curing effect by the ultraviolet-ray with respect to an ultraviolet curing ink. For this reason, the productivity of a sun visor having a printed display can be increased.

(7) As the ultraviolet curable ink,
Acrylic acid ester: 40 to 60%, hexamethylene diacrylate: 30 to 35%, photopolymerization initiator: 10 to 15%, with the remainder being a pigment or an additive 6. A method for manufacturing a vehicle sun visor as described in 6).
According to the said structure, the quick-drying property etc. of the printing display printed on the outer surface of an assembly completion body can be improved concretely.

According to the present invention, the print display can be printed at any time with a clear state, and it is not necessary to prepare a large number of sun visors having different types of print displays. Can reduce the burden of inventory management.
In addition, since heat is not applied to the assembled assembly when printing is performed, deformation of the sun visor accompanying printing can be prevented.

It is a figure which shows one side of the sun visor which concerns on embodiment of this invention. It is a figure which shows the other surface of the sun visor which concerns on embodiment of this invention. It is an AA line expanded sectional view of FIG. It is process drawing which shows the manufacturing process which concerns on embodiment of this invention. It is explanatory drawing which shows the assembly process of a sun visor main body. FIG. 6 is an explanatory diagram showing a continuation process of FIG. 5. It is explanatory drawing which shows the accessory attachment process with respect to a sun visor main body. It is explanatory drawing which shows the primer process with respect to the cover outer surface of the mirror unit in an assembly completion body. It is explanatory drawing which shows the printing process with respect to the cover outer surface (primer process completed) of the mirror unit in a sun visor assembly completion body. It is explanatory drawing which shows the printing process with respect to the skin (the other surface) in a sun visor assembly completion body. It is explanatory drawing which shows the ultraviolet irradiation with respect to the caution label of the cover outer surface of the mirror unit in a sun visor assembly completion body. It is explanatory drawing which shows the ultraviolet irradiation with respect to the caution label of the outer skin surface in a sun visor assembly completion body.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings.

First, before describing a manufacturing method according to an embodiment of the present invention, a vehicle sun visor (hereinafter referred to as a sun visor) 1 manufactured by the manufacturing method will be described with reference to FIGS.
The sun visor 1 includes a plate-like foam core material 2 and a skin 3 that covers the foam core material 2 and constitutes the outer surface of the sun visor 1. The foam core material 2 is formed by foaming using foam beads (for example, polypropylene) or the like, and the shape thereof is formed in a substantially rectangular shape in plan view so as to form a substantially entire shape of the sun visor 1. As the skin 3, a vinyl chloride sheet is used in the present embodiment.

Further, in the present embodiment, as shown in FIG. 3, a storage recess 5 is formed in one surface 4 of the sun visor 1 (foamed core material 2) in a substantially central region, and a mirror is provided in the storage recess 5. The unit 6 is stored and held. The mirror unit 6 includes a makeup mirror 7 (glass mirror), a frame body 8 that is held in the storage recess 5 and holds the makeup mirror 7, and is pivoted to the frame body 8 via a pivot shaft 9. And a cover 10 as an opening / closing lid that is supported so as to cover the cosmetic mirror 7. As shown in FIG. 3, the cover 10 is substantially surfaced with respect to one surface 4 of the sun visor 1 when closed. The opening of the storage recess 5 is covered with one state. For this reason, the outer surface 10 a of the cover 10 constitutes a part of the outer surface of the sun visor 1 on one surface 4 of the sun visor 1. In the present embodiment, the cover 10 is molded using a polypropylene resin.

On one surface 4 and the other surface 11 of the sun visor 1, as shown in FIGS. 1 and 2, a caution label 12 (note display) as a print display is printed. On one surface 4 of the sun visor 1, a caution label 12 is printed on the cover outer surface 10a of the mirror unit 6, and a primer is placed between the cover outer surface 10a and the caution label 12 for accurate printing. Layer 13 is interposed. In the present embodiment, the primer layer 13 is formed by primer treatment of a primer treatment liquid having a composition that takes into consideration the ink carrying property and the familiarity with respect to the polypropylene resin cover 10. On the other surface 11 of the sun visor 1, a caution label 12 is printed directly on the skin 3. This is because the vinyl chloride skin 3 has good ink carrying properties, familiarity, etc., and there is no need to interpose the primer layer 13 between the skin 3 and the caution label 12. Of course, it is more preferable to perform primer treatment to interpose the primer layer 13 between the skin 3 and the caution label 12.
In FIG. 3, the thickness is exaggerated to clarify the presence of the primer layer 13 and the caution label 12.

The sun visor 1 as described above is manufactured under the steps shown in FIG.
First, the assembly process of the sun visor 1 is executed, and the assembly completed body (sun visor on which the caution label 12 is not printed) 1A is completed. This is for printing on the outer surface of the finished assembly 1A.

Specifically, the assembling process of the sun visor 1 includes the assembling process of the sun visor main body (a sun visor in which the caution label 12 is not printed and no accessories such as the mirror unit 6 are attached) 1B, and the accessories for the sun visor main body 1B. And an attachment process. In the assembly process of the sun visor main body 1B, first, the foam core material 2 and the skin 3 (vinyl chloride sheet) are prepared. The foam core material 2 is obtained by foaming foam beads (for example, polypropylene), and the shape thereof is the basic shape of the sun visor 1 as described above. A storage recess 5 is formed for storing and holding the container. As the skin 3 (vinyl chloride sheet), two sheets larger than the foam core 2 are prepared. The caution label 12 is not yet printed on the surface of each skin 3.

In the assembly process of the sun visor main body 1B, as shown in FIGS. 5 and 6, the two cores 3 are encapsulated so that the foam core material 2 is sandwiched therebetween, and then the foam core material 2 is provided. Welder welding, fusing, and the like are performed on the skin 3 along the peripheral edge. Thereby, the sun visor main body 1B which coat | covered the outer skin 3 on the outer surface of the foaming core material 2 is obtained. In FIG. 6, reference numeral 14 denotes a portion where the welder is melted. When the assembly process of the sun visor body 1B is finished, as shown in FIG. 7, an attachment part attaching process to the sun visor body 1B is executed. In the accessory mounting process, the mirror unit 6 is stored and held in the storage recess 5, and the knob 15, the shaft 16 and the like are mounted at predetermined positions. Thereby, the assembly process of the sun visor 1 is completed, and an assembly complete body 1A of the sun visor 1 is obtained.

  When the assembly process of the sun visor 1 is completed and the assembly completion body 1A is completed, the assembly completion body 1A basically does not immediately shift to the next primer treatment process but is stored as an inventory. When the necessary caution label 12 is printed on the outer surface of the completed assembly 1A as necessary, the sun visor having different types of caution labels is stored in advance as an inventory. This is because the number of stocks can be reduced. Of course, when the assembled finished product 1A is not in stock and the sun visor 1 having a caution label is required at the time of completion of the assembled finished product 1A, immediately after the assembly process of the sun visor, the assembled finished product 1A is used as the next primer. Transferred to processing step.

In the primer treatment step, as shown in FIGS. 4 and 8, the primer treatment is performed on the cover outer surface 10 a of the mirror unit 6 constituting the outer surface of the assembly 1 </ b> A of the sun visor 1. In consideration of the material of the cover 10 (polypropylene in the present embodiment), the primer layer 13 (in each figure, the thickness is shown to clarify the existence) so that the caution label 12 can be appropriately printed even on the outer surface 10a of the cover. Is exaggeratedly displayed). For this reason, in consideration of the material of the cover 10 (polypropylene in this embodiment), a primer treatment liquid having the following composition is used.
Composition of primer treatment liquid Synthetic resin: 1-6%
Toluene: 98%

When the primer processing step is finished, the printing processing step is performed as shown in FIGS. This is because the caution label 12 is printed on the outer surface of the finished assembly 1A.
Among the outer surfaces of the finished assembly 1A, the printing process includes the outer cover surface 10a of the mirror unit 6 (with the primer treatment layer 13: see FIG. 9) and the outer skin 3 of the finished assembly 1A (the other side). Surface 11: see FIG. 10).

As the printing method, an ink jet printing method in which ink is directly ejected is used. By using the ink jet printing method, the cover outer surface 10a of the mirror unit 6 and the skin 3 (the other surface of the assembled finished product 1A) in the finished assembly 1A. 11), the caution label 12 is printed in a non-contact state. This is for properly printing the caution label 12 even if there is some unevenness on the printing object (surface) by utilizing the non-contact property with respect to the printing object of the inkjet printing method, and also on the outer skin 3 and the cover outer surface 10a. This is because heat that causes shrinkage and deformation is not applied. As shown in FIGS. 9 and 10, this printing processing method is executed by an ink jet printer 17. However, the ink jet printer 17 is non-contact type and can print even on a printing surface having some unevenness. As long as possible, the type (continuous type, on-demand type (piezo method, thermal method, etc.)) may be of any type.

The ink used for the printing process is basically from the viewpoint that proper printing (riding property, familiarity, quick drying, etc.) can be performed on the skin 3 (vinyl chloride) and the primer-treated cover outer surface 10a (polypropylene). The composition is determined.

In particular, in the present embodiment, an ultraviolet curable ink (UV pigment ink) that is cured and fixed by causing a polymerization reaction by irradiation with ultraviolet rays is used as the ink. The ink on the caution label 12 can be instantly dried, can be printed directly on plastic (non-absorbent material), the generation of volatile organic compounds (VOC) can be eliminated, the friction resistance, and the chemical resistance This is because it has been considered that it is excellent. In the present embodiment, the following composition is used as a preferable ultraviolet curable ink in consideration of the above contents and the like.
(1) UV curable ink (black)
Acrylic acid ester: 40-60%
Hexamethylene diacrylate: 30-35%
Photopolymerization initiator: 10 to 15%
Carbon black: 0.1-5%
Additive: 0.1-5%
(2) UV curable ink (magenta)
Acrylic acid ester: 40-60%
Hexamethylene diacrylate: 30-35%
Photopolymerization initiator: 10 to 15%
Quinacridone compound: 0.1 to 5%
Additive: 0.1-5%
(3) UV curable ink (yellow)
Acrylic acid ester: 40-60%
Hexamethylene diacrylate: 30-35%
Photopolymerization initiator: 10 to 15%
Nickel compound: 0.1 to 5%
Additive: 0.1-5%
(4) UV curable ink (cyan)
Acrylic acid ester: 40-60%
Hexamethylene diacrylate: 30-35%
Photopolymerization initiator: 10 to 15%
Copper phthalocyanine compound: 0.1 to 5%
Additive: 0.1-5%
(5) UV curable ink (white)
Acrylic acid ester: 40-60%
Hexamethylene diacrylate: 20-30%
Diphenyl-2,4,6-trimethylbenzoylphosphine-oxide (photopolymerization initiator): 10 to 15%
Titanium oxide: 10-15%
Additive: 0.1-5%

When the printing process is completed, an ultraviolet irradiation process is performed as shown in FIGS. 4, 11, and 12. This is because the ink (caution label 12) ejected for printing on the outer skin 3 and the primer-treated cover outer surface 10a is photopolymerized to be immediately cured and fixed.
The ultraviolet ray UV is irradiated by an ultraviolet irradiation device (not shown), and the wavelength of the irradiated ultraviolet ray is determined in consideration of the ink composition, the ink thickness, and the like. Specifically, those having a wavelength of 254 nm and 365 nm are used.

Through this ultraviolet irradiation step, the sun visor 1 shown in FIGS. 1 to 3, that is, the sun visor 1 on which the caution label 12 is printed is obtained.

Accordingly, after the completed assembly 1A of the sun visor 1 is completed, the caution label 12 can be printed with a clear state even if there is some unevenness on the outer surface of the completed assembly 1A. Only the completed assembly 1A that does not have is prepared, and the necessary types of caution labels 12 can be printed on the outer surface of the completed assembly 1A as needed. For this reason, it is possible to eliminate a large number of sun visors 1 having different types of caution labels 12 as inventory, and the inventory management burden is reduced.
In addition, since printing is performed by the ink jet printing method and it is not necessary to apply heat to the skin 3 and the cover outer surface 10a, the skin 3 and the cover 10 are prevented from contracting or deforming.

Although the embodiments have been described above, the present invention includes the following aspects.
(1) The caution label 12 is printed only on one side of the sun visor 1.
(2) The primer treatment may be performed not only on the cover outer surface 10a of the mirror unit 6 but also on other parts of the sun visor 1 (skin 3 part (vinyl chloride part)).
(3) The present invention is applied to the sun visor 1 that does not include the mirror unit 6.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Sun visor 1A Assembly completion body 2 Foam core material 3 Skin 6 Mirror unit 10 Cover 10a Cover outer surface (outer surface of assembly completion body)
12 Caution label (printed)
13 Primer layer 17 Inkjet printer

Claims (2)

A method of manufacturing a vehicle sun visor having a printed display on an outer surface,
A method of manufacturing a vehicle sun visor, wherein a printed display is printed on an outer surface of an assembled vehicle sun visor assembly using an ink jet printing method in which ink is directly ejected. As an ink used in printing by the inkjet printing method, an ultraviolet curable ink that is cured by ultraviolet irradiation,
The method for manufacturing a vehicle sun visor according to claim 1, wherein after the printed display is printed on the outer surface of the assembled assembly, the printed display is irradiated with ultraviolet rays.

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