JPS5949947A - Molding method of internal trim of vehicle - Google Patents

Abstract

PURPOSE:To obtain efficiently the titled material for an instrument panel or the like by a method wherein a heated skin material is sucked for plastic deformation, a pattern is formed simultaneously on the surface of the skin material, foaming resin is filled thereafter on the back surface thereof, an insert plate is fitted on the resin, and then foam molding is performed. CONSTITUTION:A heated skin material 2 is made to contact with the air-permeable female die 10 of a mold 9 and sucked for plastic deformation by a suction apparatus, while a pattern is formed simultaneously on the surface of said material by pattern-forming protrusions formed on the wall surface 10'' of the cavity 10' inside the female die 10. Thereafter foaming resin 7 is filled on the back surface of the skin material 2 held in the deformed state, and a male die 11, which is fitted with an insert plate 6, is clamped down on the female die 10. Foam molding is then performed to mold the insert plate 6, the foaming resin 7 and the skin material 2 into one body, whereby the desired internal trim material is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Disclosed technology 61 belongs to the technical field of molding interior materials such as instrument panels of self-help vehicles.

Therefore, in this invention, a heated skin material is vacuum-sucked to plastically deform it, and at the same time a pattern such as a shibe stitch is engraved on the surface thereof, and then a foamed resin such as urethane is injected into the inner surface of the molded skin material. This invention relates to a method of molding interior material for a vehicle so as to attach an insert plate, and in particular, the foamed resin is injected and filled into the back surface of the II pattern skin material in the processed state, and the foamed resin is ) The invention relates to a method of molding an interior material for a vehicle, in which the insert plate is mounted on a grease-resistant surface, and the foamed resin, the skin material, and the insert sleeve are integrally molded.

As is well known, cushion members are often used as interior materials for automobiles, such as instrument panels, headrests, and door trims.

Furthermore, the surface G of the nuclide cushion member is generally engraved with patterns such as grains and stitches for aesthetic design purposes.

As shown in FIGS. 1 to 30, the cushion member 1 having the pattern is molded by heating the resin soft skin material 2 with a heater 3, and then molding the female mold 4' with a vacuum mold 4. The molded skin material 2 is made by plastically deforming it into a predetermined shape according to
'.

Thereafter, the molded skin material 2' is removed from the vacuum mold 4 and transported to the next step, where the molded skin material 2' is attached to the female mold 5' of the foam molding pad 5.

In theory, the female mold 5' has the same shape as the female mold 4' of the vacuum forming mold 4.

Further, on the male mold 5'' side of the foaming mold 5, a hard insert panel 6, which has been formed in a predetermined manner, is installed, and on the other hand,
Urethane 7 as a foamed resin is on the back side of the oval skin material 2'.
from the injection head 8, and then immediately fill the male mold 5.
``Put the gold on the female 195'!''! ;Cry and mold.

After aging at ℃, the reaction of urethane 7 is 1.
After storage, the mold is opened to take out the cushion member 1 as an interior material formed in a predetermined manner.

Therefore, conventionally, when molding the cushion member 1, a vacuum mold 4 and a foam mold 5 are required, which has the disadvantage of increasing space occupancy and increasing equipment costs. There was also the inconvenience of complicating the process.

In addition, since the pattern is engraved in the vacuum mold 4, the positioning of the variable pattern becomes conical when it is attached to the foam mold 5 in the next step, and in particular, even if a slight deviation occurs, There was a problem when nZ'FF4 collapsed after mold clamping.

The purpose of the present invention is to solve the above-mentioned technical problem of molding interior materials for automobiles and other vehicles, and to solve the problem by simplifying the process, occupying less space in the equipment, making the work easier, and preventing the skin pattern from collapsing. The object of the present invention is to provide an excellent molding method that not only prevents the formation of molding, but also allows the pattern to be engraved more clearly, thereby benefiting the field of interior material application in the vehicle industry such as automobiles.

In order to solve the above-mentioned problems, a pre-heated skin material is set in the smoky female mold of the mold, and then the lower mold is depressurized. The skin material is deformed by suction IIW in the female mold, and a pattern is engraved on the surface of the skin material by the suction pressure, and then the back surface of the molded skin material is filled with foamed resin from an injection head, On the other hand, during that time, an insert panel was attached to the male die corresponding to the female die of the above-mentioned mold, and the foamed resin was then filled and the mold was tightened to perform foam molding. 9.

Next, one embodiment of the present invention will be described below with reference to the drawings in FIG.

A resin soft skin material 2 heated in advance by the heater 3 of FIG. 1a is set in contact with the air-permeable female mold 10 of the mold 9 which has been opened.

Next, as shown in Figure 4b, the inside of the female mold 1o is vacuum-formed by vacuum-forming (not shown) to form the skin material 2.

Then, as shown in FIG.
It is plastically deformed along the inner cavity IO', and its surface is compressed by well-known pattern-forming protrusions formed on the wall Ifi1o'' of the cavity IO' to form grains and stitches. Ru.

Thereafter, urethane 7 as a foamed resin is injected and filled from an upper injection head 8 onto the back surface of the mold #, with the skin material 2' still inscribed in the cavity IO'.

Meanwhile, the male mold 1 for the female/Iu'IO of the mold 9 is
1 has a hard insert plate '6t-I.

Then, as shown in FIG. 4c, when the male die 11 is clamped to the female die 10 after filling the set amount of the urethane 7 mentioned above, the insert plate 6 is attracted to the urethane 7.
At the same time, due to the mold clamping pressure, the surface of the molded skin material '2' is brought into hard contact with the pattern forming protrusions, and the grains and
The stitches are clearly engraved and transferred.

After being molded in the mold 9 for a predetermined period of time, the mold is opened and the cushion part control as a product interior material in which the molded skin material 2' cretan foam 7 and insert plate 6 are integrated is taken out and one step is carried out. finish.

It goes without saying that the embodiment of the present invention is not limited to the two-part embodiment. For example, an insert plate may be attached to the male mold in the process shown in FIG. 4b, or one foaming! Various methods can be adopted, such as injection of fat after mold clamping.

According to the present invention, as described in 1.
In the previous method, the foamed resin and insert plate were filled and adsorbed on the back side of the skin while it remained deformed, so basically the molding process was continuous with one mold. It can be carried out accurately and the process can be simplified.
It has an excellent effect of improving work efficiency.

In addition, since the vacuum forming of the skin removal and the integral residual foam or →K are done in one "hollow mold", there is no mold deviation, and the skin az
' +r (1/1" has the advantage that the engraved Sensho-sama will not collapse and the product defect rate will be significantly reduced.
There is also the advantage that the space occupied by the equipment +I++ product is reduced compared to the conventional multiple process process, and the installation 11a cost can be reduced.

Therefore, when the mold is clamped, the vacuum-formed surface material remains as it is.
By being pressed against one plate, the pattern formed on the surface is due to the pressure from the insert plate, and
With the foaming pressure of the resin, the engraving is clearly engraved and transferred, resulting in an excellent effect of achieving a design aesthetic that is superior to that of the original design.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the heating state of the skin material, Figs.
The figure is an explanatory diagram of the vacuum forming process of the skin material, Figures 3a to 3c are explanatory diagrams of the foaming and coloring process, Figure 4a and the following are process diagrams of the embodiment of this invention, and Figure 4a is a diagram of the process of forming the mold. An explanatory diagram of the state in which the skin material is set, Figure 4b is an explanatory diagram of the vacuum forming state,
Figure 4c shows foaming (σ (fat filling state i12 clear diagram, Figure 4d)
The figure shows mold clamping state explanation 14. 2...Hyderika publication, 2'...formed skin material, 7...
Foamed resin, 6... insert plate, 1...
Interior materials. No. 1〉Niko 3

Claims (1)

[Claims] The heated skin material is subjected to suction plastic deformation, and at the same time a pattern is formed on the surface of the skin material, after which a pattern is formed on the surface of the skin material, and then foaming, dark fat, and an insert plate are attached to the back side of the skin material to form a car-width interior material. In the method, the above skin material is left plastically deformed on its facet? +l l, Fill the foamed resin marked J- and attach the insert plate marked L to the foamed resin to form a foamed shape, and then integrally mold the insert plate, the foamed resin, and the skin material marked -. Vehicle interior materials and shaped blades are designed to suit the needs of the vehicle.