JPH04101818A - Manufacture of vehicular meter cluster - Google Patents

Abstract

PURPOSE:To obviate the masking jig and, prevent the defect or turbulence in parting line from developing by a method wherein the gloss values of general part and of opening part of a formed body are changed by applying a single kind of coating on the surface of the formed body produced by a forming mold, in which the gloss values of the portions corresponding to the general part and to the opening part of the formed body are changed by embossing. CONSTITUTION:Striped pattern is formed by etching on the whole surface of a forming mold cavity, by which a meter cluster 2 having the surface consisting of general part 4 and opening part 5 interposed by parting part 6 is formed. Lustering embossing is applied to the general part 4a, which corresponds to the general part 4 of the cluster, of the forming mold cavity. Delustering embossing is applied to the opening part 5a, which corresponds to the opening part 5 of the cluster, of the forming mold cavity. Both the embossings are applied so as to have parting part 6a as parting line. When ABS resin or the like is injection-molded with the above-mentioned mold, a formed article having the lustered surface at the general part 4 and the less lustered surface at the opening part 5 is obtained. A kind of coating having the gloss value of about 4-5 is wholly applied to the formed article. In this case, the coating has the thickness of about 100-150mum. As a result, a meter cluster product having two kinds of gloss values or about 8-12 at the general part 4 and about 2-3 at the opening part 4 is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a meter cluster for a vehicle.

[Conventional technology]

Vehicles such as automobiles are equipped with an instrument panel l (commonly known as a dash board) that houses instruments 3 such as a speedometer, as shown in Figure 4, in front of the driver's seat. cluster 2a
is covered by.

The meter cluster 28 is usually made by injection molding of ABS-based thermoplastic resin, but the surface gloss is semi-matte (about 6 to 12 gloss) for the general appearance. In addition, the opening for installing the meter is required to have a matte gloss level of approximately 2) to prevent reflection of the meter, and as a countermeasure to this, paints with different gloss levels are applied to each area. Was.

[Problem to be solved by the invention]

Applying two types of paint separately in order to change the gloss level of the surface as in the conventional technique described above is not only uneconomical in terms of materials and man-hours, but also requires masking treatment to ensure a clear separation between the different paint applications. Furthermore, even if the above-mentioned jig is used for painting, there are problems such as irregularities in the parting line due to variations in work.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a vehicle meter cluster that does not have the above-mentioned drawbacks.

[Means to solve the problem]

To achieve the above object, the present invention provides a vehicle meter cluster in which a paint is applied to a molded body made by injection molding a synthetic resin to change the gloss level of the general part and the opening on the surface of the molded body. In the manufacturing method, the glossiness of the parts of the mold cavity corresponding to the crotch and opening are changed by texturing, and one type of paint is applied to the surface of the molded product formed by the mold, and the general part and the opening are coated. This is a method for manufacturing a vehicle meter cluster characterized by changing the glossiness of the part.

[Example] To explain the present invention based on the drawings, FIG. 1 is a perspective view of a meter cluster according to the present invention, FIG. 2 is a sectional view of the main part of the meter cluster, and FIG. 3 is a mold for injection molding the meter cluster. FIG. 3 is a cross-sectional view of the cavity.

As shown in Fig. 2, the meter cluster 2 whose surface consists of a general part 4 and an opening part 5 with a parting part 6 in between is made by injection molding of ABS thermoplastic resin, etc. using a mold cavity 7 shown in Fig. 3. Made by molding.

A drawing pattern is etched all over the surface of the mold cavity 7, and the general part 4a corresponding to the crotch part 4 is subjected to a drawing (texturing) process with a barb. The corresponding opening 5a is subjected to a matte drawing (texturing) process, with a parting part 6a as a parting part. Then, when ABS resin etc. is injection molded using this mold,
- The crotch part 4 is glossy, and the opening part 5 is a molded product with a surface condition with few burrs.
Apply one type of paint to the entire surface. In this case, the paint should not be applied too thick, and the coating thickness should be about 100 to 150 microns.

Through the above steps, a meter cluster product having two types of gloss, the -S part 4 having a gloss of about 8 to 12 and the opening part 5 having a gloss of about 2 to 3, is obtained.

Note that this example shows an example of a method for manufacturing a meter cluster with two types of glossiness; however, the method is not limited to this, and surfaces with two or more different glossinesses can be produced by changing the drawing pattern of the mold cavity. It is also possible to obtain a meter cluster with Furthermore, the present invention is applicable not only to meter clusters but also to other molded products.

[Effects of the Invention] According to the present invention, not only can appearances with different levels of gloss be expressed by one coating with one type of paint, but also there is no need for a coating masking jig for marking off the level of gloss. Furthermore, since there is no variation in the parting portion due to the painting process, it is possible to obtain a vehicle meter cluster with low material costs and low manufacturing costs, and with good quality.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a meter cluster according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of essential parts of the meter cluster, FIG. 3 is a cross-sectional view of a mold cavity for injection molding the meter cluster, and FIG. This is an explanatory perspective view showing a vehicle instrument panel.Instrument valve name 2a-Meter cluster meter 4.4a--General section 5a--Sekiguchi section 6.6a-Parting section mold cavity

Claims (1)

[Claims] 1. In a method for manufacturing a vehicle meter cluster in which a paint is applied to a molded body made by injection molding a synthetic resin to change the glossiness of the general part and the opening on the surface of the molded body, the above-mentioned method of the mold cavity The method is characterized in that the glossiness of the parts corresponding to the general part and the openings is changed by texturing, and the glossiness of the general parts and the openings is changed by applying one type of paint to the surface of the molded object formed by the mold. A method of manufacturing a vehicle meter cluster.