JPS6144053B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention primarily relates to a method of manufacturing an instrument panel for an automobile.

Conventionally, as a method of this kind, a method is known in which a synthetic resin sheet c is vacuum-press-molded on a core material b having a recess a for mounting instruments and other objects, as shown in the first diagram, but in this case, the recess is Generally, a is evacuated through a guide hole d, so that the sheet c is drawn into the recess a and adhered thereto by the suction force of the exhaust, as shown in the figure. According to this, when the upper surface of the sheet c is to be removed to be exposed in the recess a in preparation for installation, the work is likely to be difficult. That is, for example, it is removed by making a cut with a trim blade, but when the amount of cut is small, it becomes difficult to remove, and when the amount of cut is large, the core material b is damaged, thus causing the inconvenience of making the work troublesome. The object of the present invention is to provide a method free of such inconveniences, which involves vacuum-pressing a synthetic resin sheet onto a core material having recesses for mounting instruments and other parts. The sheet is characterized in that a slit or other cut is made at a portion of the sheet facing the recess prior to the vacuum crimping to communicate the inside of the recess with the outside air and prevent the sheet from being drawn in.

An example of implementing the present invention will be explained with reference to the attached drawings.

Figures 2 and 3 show one example.
2 indicates a core material, and 2 indicates a synthetic resin sheet to be molded and bonded to this core material 1. The core material 1 has a relatively large recess 3 formed in advance on its upper surface in preparation for mounting instruments and other components. . The core material 1 is, for example,
The sheet 2 is made of ABS resin, for example, a relatively thin leather sheet 2 made of polyvinyl chloride or other material.
A and a relatively thick foam sheet 2b such as polypropylene foam are laminated one above the other to form a composite sheet.

The core material 1 and the sheet 2 are, for example, as shown in the second figure, overlapped with each other by closing an upper mold 4 and a lower mold 5 and bonded to each other with an adhesive or the like, and in this case, the recess 3 The interior is generally evacuated through the guide hole 6, which is a disadvantage despite the above-mentioned disadvantages.

The present invention eliminates such inconvenience, and the upper mold 4
A heat cutter or other cutter 7 is prepared in advance so as to face the upper side of the recess 3, so that when the upper mold 4 and the lower mold 5 close each other, that is, when molding between the two molds 4 and 5, the recess 3 On the upper side of the sheet 2, a slit-like or other cut 8 is formed by the cutter 7. Thus, the inside of the recess 3 is the cut 8.
The sheet 2 is communicated with the outside air through the recess 3 to eliminate the influence of evacuation, and the sheet 2 is closed at the upper side, leaving a space inside the recess 3. The product thus obtained is, for example, as shown in Figure 3, and the sheet 2 is then easily removed by cutting the trim blade 9 above the recess 3.

As described above, according to the present invention, the synthetic resin sheet is cut in advance at the upper part of the recess of the core material, and there is no disadvantage of the conventional method in which the sheet is drawn into the recess and adhered thereto. Next, it has the effect of simplifying and facilitating the operation of removing the sheet from above the recess.

[Brief explanation of the drawing]

FIG. 1 is an explanatory line diagram of a conventional example, FIG. 2 is a cutaway side view illustrating an example of the method of the present invention, and FIG. 3 is a side view of the product taken out. 1...core material, 2...synthetic resin sheet, 3...recess, 8...cut.

Claims (1)

[Claims] 1. In a type in which a synthetic resin sheet is vacuum-pressed onto a core material having a recess for mounting instruments and other parts, a portion of the sheet facing the recess,
A method for manufacturing an instrument panel, characterized in that prior to the vacuum crimping, a slit or other cut is made to communicate the inside of the recess with outside air to prevent the sheet from being drawn in.