CN102962186A - Double color paint spraying method for lampshade of vehicle lamp - Google Patents

Abstract

The invention relates to a double color paint spraying method for a lampshade of a vehicle lamp, which is characterized by comprising the following steps: 1, drying the colorless and transparent lampshade of the vehicle lamp; 2, spraying black paint; 3, carrying out secondary drying; 4, spraying red paint; and 5, carrying out triple drying. The double color paint spraying method can realize a complex double-color pattern paint spraying effect without the need of a double-color die injection product. The double color paint spraying method has the characteristics of low cost, good coloring power and strong stereoscopic impression.

Description

A kind of two-tone finish method of car light lampshade

Technical field

The invention belongs to the automotive lighting field, be specifically related to a kind of two-tone finish method that automobile lamp is used lampshade.

Technical background

Present automobile lamp is rear combination lamp particularly, according to its functional requirement, has many needs to use double-colored lampshade, so lampshade need to adopt conventional lampshade secondary injection molding or the injection mo(u)lding of double-color mold structure.Wherein lampshade quadric injection mould mould carries out the total member of lampshade that successively injection moulding obtains two kinds of colors according to the order of injection moulding again owing to need to make separately the different mould of two covers.And this product generally causes the seam out-of-flatness in two kinds of color stitching section branches, has face poor, or the defective such as be out of shape, leak.And the product of double-color mold structure injection mo(u)lding generally can not produce the said goods defective, but the size of its mould is generally larger, material require adopts the steel of higher level, so the die cost price is 4-6 times of common die, and need large-scale double-shot moulding machine equipment processing (generally be import, price is also very high).And the decorative pattern of product part (crimson color part) is long and narrow, and is comprised of three parts, and bicolor injection mould is difficult the realization, decorative pattern has Three regions, adopt double color mould structure meeting more complicated, and the mould strength part is not very good, the lampshade surface also has three and advances the glue point, affects outward appearance; The quadric injection mould mould product of beating inserts has obvious finedraw two kinds of color splicings place, and easily out-of-flatness affects outward appearance.

Summary of the invention

For above problem, the object of the present invention is to provide a kind of car light lampshade two-tone finish method, by water white transparency PMMA lampshade is carried out two-tone finish, obtain two kinds of color effects that the client needs, the high die cost of having avoided the quadric injection mould mould to produce.

Technical scheme of the present invention is achieved in the following ways; A kind of car light lampshade two-tone finish method is characterized in that: may further comprise the steps:

1), water white transparency car light lampshade oven dry: with one-time formed water white transparency car light lampshade, the smooth baking oven of putting into 80 ± 2 ℃ toasted 30 ± 2 minutes;

2), spray black paint: taking out lampshade, is that the transfer membrane paster of PVC is attached to lampshade inner surface with material, stays the decorative pattern part, paster is opened, make lampshade inner surface up, shelter from the peripheral part of lampshade with special tooling, at lampshade inner surface spray black paint;

3), secondary drying: lampshade inner surface is placed on the machine frame up, 50 ± 2 ℃ baking oven bakings 10 ± 2 minutes;

4), crimson look paint: take out lampshade, the decorative pattern part of tearing paster, more crimson look paint;

5), three oven dry: will spray good lampshade inner surface more up, and be placed on the machine frame 50

Baking oven baking 60 ± 2 minutes, take out product, naturally cool off and namely get the lampshade with dark red double-colored decorative pattern.

The present invention does not need the double-color mold injection product, just can realize the complicated double-colored floral designs effect of spraying paint.Have characteristics with low cost, that color is puted forth effort, third dimension is strong.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention.

Fig. 2 is the decorative pattern paster top view of lampshade inner surface.

Fig. 3 is the 100 Ge 1.0*1.0mm grid schematic diagrames of drawing that carry out after lampshade inner surface sprays paint.

Fig. 4 is the hundred lattice test of carrying out after lampshade inner surface sprays paint, gummed paper pull-up schematic diagram.

Fig. 5 is after lampshade inner surface sprays paint, and peeling paint is judged schematic diagram.

The specific embodiment

A kind of car light lampshade two-tone finish method is to spray two-tone paint at 1 minute secondary of water white transparency car light lampshade, and present embodiment is black and redness, as shown in Figure 1, may further comprise the steps:

1, water white transparency car light lampshade oven dry: with water white transparency car light lampshade PMMA routinely after the injection moulding out, the smooth baking oven of putting into 80 ± 2 ℃ toasted 30 ± 2 minutes;

2, spray black paint: take out lampshade, be that the transfer membrane paster 3 of PVC is attached to lampshade inner surface with material, as shown in Figure 2, again paster (except the decorative pattern part) is opened, make lampshade inner surface up, shelter from the peripheral part of lampshade with special tooling, in lampshade inner surface spray CP1234(main component: the mixtures such as thermoplastic acrylic resin, second fat) black paint;

3, secondary drying: take out lampshade, inner surface was placed on the machine frame up again, 50 ± 2 ℃ baking oven bakings 10 ± 2 minutes;

4, crimson look paint: take out lampshade, the decorative pattern part of tearing paster is sprayed the CP1233(main component: the mixtures such as thermoplastic acrylic resin, second fat) red paint again;

5, three oven dry: will spray good lampshade inner surface up, and be placed on the machine frame 50

Baking oven baking 60 ± 2 minutes, take out product, naturally cool off namely obtain satisfactoryly having the lampshade 1(of dark red double-colored alternate decorative pattern 2 by shown in Figure 1).

The present invention, by hundred lattice test checks: 1, draw 100 Ge 1.0*1.0mm grids (such as Fig. 3) with anchor clamps and Jie's cutter at product, cut is advisable with show-through material, 2, gummed paper is attached to paint and upward compresses (bubble can not be arranged) with finger, with hand gummed paper one end is kept the 90 degree rapid pull-ups in right angle (such as Fig. 4) again, 3, repeat 2 operation 5 times, notice that every less important usefulness newly moulds Paper.Judge: the quantity that comes off be no more than 5% Qie No have integral lattice to come off to be judged to be qualified, otherwise be defective (such as Fig. 5).Realize double color mould effect (annotating: black and the red color that can be replaced by according to client's needs other).

Claims (1)

1. car light lampshade two-tone finish method is characterized in that: may further comprise the steps:

1), water white transparency car light lampshade oven dry: with water white transparency car light lampshade routinely after the injection moulding out, the smooth baking oven of putting into 80 ± 2 ℃ toasted 30 ± 2 minutes;

2), spray black paint: taking out lampshade, is that the transfer membrane paster of PVC is attached to lampshade inner surface with material, stays the decorative pattern part, paster is opened, make lampshade inner surface up, shelter from the peripheral part of lampshade with special tooling, at lampshade inner surface spray black paint;

3), secondary drying: take out lampshade, inner surface was placed on the machine frame up again, 50 ± 2 ℃ baking oven bakings 10 ± 2 minutes;

4), crimson look paint: take out lampshade, the decorative pattern part of tearing paster, more crimson look paint;

5), three oven dry: will spray good lampshade inner surface up, and be placed on the machine frame 50

Baking oven baking 60 ± 2 minutes, take out product, naturally cool off the lampshade that namely obtains having dark red double-colored decorative pattern.

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