CN110394953A - A kind of oblique top sealing material structure of two-color headlight light distribution mirror - Google Patents

Abstract

The invention relates to an inclined top sealing material structure for a two-color light distribution mirror. The inner surface of the primary molding part of the optical distribution mirror is an injection pressure receiving surface, and the outer surface of the primary molding part is in contact with the core area of the movable mold side; The entire inner surface of the once-molded part is used as the sealing material surface. The present invention uses an integral sealing material surface to replace the original smaller sealing material surface, and completely transfers the injection molding pressure to the inner surface of the disposable product, the inner surface of the disposable product to the outer surface of the disposable product, and the outer surface of the disposable product It is transmitted to the core side of the moving model, and then transferred to the foot of the moving mold from the core side of the moving model, and then passed to the table of the machine tool from the foot of the moving mold, so as to offset the secondary injection molding pressure and avoid the occurrence of defects.

Description

A kind of oblique top sealing material structure of two-color headlight light distribution mirror

technical field

The invention relates to an inclined top sealing material structure for a two-color headlight light distribution mirror, which belongs to the technical field of injection molding of vehicle lights.

Background technique

The two-color headlight light distribution mirror is a product formed by the primary type and the secondary type. The primary product is the upper surface product, and the secondary type is the lower surface product, as shown in Figure 3.

See Figure 4-5, the secondary type 2 will produce upward injection molding pressure during the filling molding process, and the inclined roof sealing surface 4 shown in the circle of Figure 5 is not enough to offset the injection pressure, resulting in the appearance of the inclined roof save up. As shown in Figure 6-7, the wall thickness of the product after molding is deviated due to the deviation of the inner inclined roof from its position during the forming process. The position 6 in Figure 7 indicates the theoretical product boundary, and the position 7 indicates the actual product boundary. Visible appearance and performance defects.

The "primary type" mentioned in this application refers to the primary molding part, and the "secondary type" refers to the secondary molding part.

Contents of the invention

The object of the present invention is to provide a kind of oblique top sealing material structure for the light distribution mirror of the two-color headlight, which adopts the formed primary type to offset the injection molding pressure generated in the secondary type injection molding process. Specifically, it is to cancel the air-avoiding surface of the inner sloping roof, avoiding the inner sloping roof due to the small surface of the sealing material that cannot offset the secondary injection molding pressure, and completely transfer the injection molding pressure to the inner surface of the primary product. By polishing the sealing surface of the inner inclined roof, the disposable product is prevented from being crushed during the load-bearing process.

The present invention takes the following technical solutions:

A kind of oblique top sealing material structure for a two-color light distribution mirror, including the inner surface 9 of the primary molding part of the optical distribution mirror as an injection pressure receiving surface, and the outer surface 8 of the primary molding part is in contact with the core area of the movable mold side; the primary molding part The inner surface 9 of the molding part is not provided with a slanted top and a hollow surface, and the entire inner surface 9 of the one-time molding part is used as a sealing material surface.

Preferably, the core area on the movable mold side is fixed.

Preferably, the core area on the side of the movable mold is limited by the foot of the movable mold, and the foot of the movable mold is limited by the table top of the machine tool.

Preferably, the degree of polishing of the inner surface 9 of the primary molding part reaches the SA2 level of SIS055900, which is used for sandblasting and derusting metal surfaces.

Preferably, the two-color lamp is an automobile headlight.

The beneficial effects of the present invention are:

1) The molded primary mold is used to offset the injection pressure generated during the secondary mold injection molding process.

2) Cancel the air-avoiding surface of the inner inclined roof, and at the same time ensure that the polishing degree of the contact surface between the inclined roof and the disposable product reaches A2 level.

3) The integral sealing surface is used to replace the original smaller sealing surface, and the injection pressure is completely transmitted to the inner surface of the disposable product, the inner surface of the disposable product is transmitted to the outer surface of the disposable product, and the outer surface of the disposable product Transfer to the core side of the moving model (fixed), and then transfer from the core side of the moving model to the foot of the moving mold, and then to the table of the machine tool from the foot of the moving mold, so as to offset the pressure of the secondary injection molding and avoid the occurrence of defects.

4) Overcome the deviation between the theoretical product boundary and the actual product boundary of the secondary product, which leads to the problem of affecting the size and quality of the product.

Description of drawings

Fig. 1 is a front view of a light distribution mirror for an automobile bridge lighting.

Fig. 2 is a sectional view along A-A in Fig. 1, and the boxed part in the figure is the inner inclined top part.

Fig. 3 is a cross-sectional view of the primary type and the secondary type of the two-color light distribution mirror for vehicle lights and their relative positions with the mold in the prior art.

FIG. 4 is a partially enlarged view of FIG. 3 .

Fig. 5 is an enlarged view of the sealing surface of the inclined roof in Fig. 4 .

Fig. 6 Schematic diagram of the dynamic failure of the inner inclined roof.

Fig. 7 is a partially enlarged view of Fig. 6, in which the theoretical product boundary and the actual product boundary of the secondary product are shown.

Fig. 8 is a schematic diagram of the inclined top sealing material structure of the two-color light distribution mirror of the present invention.

In the figure, 1. Primary type, 2. Secondary type, 3. Parting surface, 4. Inclined roof sealing surface, 5. Inclined roof avoidance surface, 6. Theoretical product boundary, 7. Actual product boundary, 8. One-time outer surface, 9. One-time inner surface, 10. Inner inclined ejector rod, 11.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As a comparative embodiment: due to the corresponding features on the product, as shown in Figure 5, the effect of the inclined top sealing material surface 4 is exactly to ensure that the primary type (transparent part) and iron The molds are completely fitted, and the gap is less than 0.06mm. In this way, it is avoided that the black part is filled with the gap between the transparent part and the mold, resulting in the defect of material penetration. The design function of the inner sloping roof avoidance surface 4 is to avoid the one-time contact of the large area of the mold with the product.

Embodiments of the invention:

Referring to Fig. 8, a kind of oblique top sealing material structure for a two-color light distribution mirror, the inner surface 9 of the primary molding part including the optical distribution mirror is the injection pressure receiving surface, and the outer surface 8 of the primary molding part is in contact with the core area of the movable mold side ; The inner surface 9 of the primary molding part is not provided with a slanted roof avoidance surface, and the entire inner surface 9 of the primary molding part is used as a sealing material surface.

In this embodiment, the movable mold side core area is stationary.

In this embodiment, referring to FIG. 8 , the core area on the side of the movable mold is limited by the foot of the movable mold, and the mold foot of the movable mold is limited by the table top of the machine tool.

In this embodiment, as a preferred solution, the degree of polishing of the inner surface 9 of the primary molding part reaches the SA2 level of SIS055900, which is used for sand blasting and rust removal on metal surfaces.

In this embodiment, the two-color light is a car headlight.

The improved one-shot force-bearing surface is an integral surface, and at the same time, the injection pressure is completely transmitted to the inner surface of the one-shot product, the inner surface of the one-shot product is transmitted to the outer surface of the one-shot product, and the outer surface of the one-shot product is transmitted to the dynamic model core side (fixed), then the core side of the moving model is transmitted to the foot of the moving mold, and the foot of the moving mold is passed to the machine table, so as to offset the pressure of the secondary injection molding and avoid the occurrence of defects. That is, the force is transmitted layer by layer through the mold until it reaches the machine table. The machine tool table is considered to be stable and unchanged during the injection molding production process of the product, so it can be considered that the way of offsetting through transmission is effective. As shown in Figure 8.

The invention adopts the formed primary type to offset the injection pressure generated in the secondary type injection molding process; cancels the avoidance surface of the inner inclined roof, and at the same time ensures that the polishing degree of the contact surface between the inclined roof and the primary product reaches A2 level; adopts the overall Type sealing material surface to replace the original smaller sealing material surface, completely transfer the injection pressure to the inner surface of the one-shot product, the inner surface of the one-shot product to the outer surface of the one-shot product, and the outer surface of the one-shot product to the dynamic model The core side (fixed), then the core side of the moving model is transferred to the movable mold foot, and the movable mold foot is passed to the machine table, thereby offsetting the secondary injection molding pressure and avoiding defects; overcoming the secondary product Theoretical product boundary of the product deviates from the actual product boundary, which leads to problems affecting the size and quality of the product.

Claims (5)

1. a kind of bi-colour light lens oblique top envelope material structure, it is characterised in that:

The inner surface (9) of one-pass molding part including lens is injection pressure receiving surface, the outer surface of one-pass molding part (8) it is contacted with dynamic model side core region；

The whole of the inner surface (9) of the one-pass molding part is used as envelope charge level.

2. bi-colour light lens oblique top envelope material structure as described in claim 1, it is characterised in that: dynamic model side core region It is fixed.

3. double-colored headlight lens oblique top envelope material structure as described in claim 1, it is characterised in that: dynamic model side core area Limit of the domain by dynamic model support block, limit of the dynamic model support block by lathe table top.

4. bi-colour light lens oblique top envelope material structure as described in claim 1, it is characterised in that: the one-pass molding part The polishing degree of inner surface (9) reaches the SA2 rank that derusting by sandblasting standard in metal surface uses SIS055900.

5. bi-colour light lens oblique top envelope material structure as described in claim 1, it is characterised in that: the bi-colour light is before automobile Illuminator.