JPS61106215A - Manufacture of molding for vehicle - Google Patents

Abstract

PURPOSE:To unnecessitate edge processing and secondary work therefor and obtain the molding for vehicles abundant in cushioning property by a method wherein an expandable member, pinched by a hard synthetic resin base and a resin surface skin, is pressed between a bottom force electrode and a top force electrode having a recess while high-frequency is applied on both electrodes to integrate the hard synthetic resin base, the expandable member and the resin surface skin. CONSTITUTION:The top force electrode 22 is formed with the recess 23, having the same configuration as the profile of the molding for vehicles, at the lower surface thereof while the outer rim section 24 thereof is protruded toward the bottom force electrode 20 and is provided with a sharp configuration. The hard synthetic resin base 10, the expandable member 11 and the surface skin 12 are piled on the bottom force electrode 20 and the top force electrode 22 is pushed against them to press and compress them by the outer rim section 24. In this case, high-frequency is applied on both electrodes 20, 22 and the compressed parts are fused whereby these three parts are jointed. The expandable member 11 is compressed and deformed under applying tension on the surface skin 12 and the outer periphery as well as the edge of the expandable member 11 are profiled by the recess 23 and the side wall 25 whereby the outer periphery and the edge are provided with roundness in confirming to the same of the side wall 25.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of application in wood industry] The present invention relates to a method for manufacturing moldings for vehicles, and particularly to a method for manufacturing moldings that do not require end treatment.

[Conventional technology]

Conventionally, in vehicle molding, as shown in FIGS. 7 and 8, the end of a molding material l made by extrusion molding a molten synthetic resin is placed in a molding space 2 consisting of a lower mold and an upper mold as shown in FIG. The above-mentioned protrusion 5 is formed. This end cap 5 gives roundness to the end of the material 1 to ensure safety.

[Problem that the invention seeks to solve]

However, according to the conventional manufacturing method of a vehicle molding, a secondary process is required to process the terminal. In addition, since the molding material 1 is extruded, the foaming ratio of the material 1 can only be set to about 1.3 times at most, which gives the molding cushioning properties and an excellent feel. It had the disadvantage that it could not be

[Means for solving problems]

In the present invention, a foam member is sandwiched between a hard synthetic resin substrate and a resin skin between a lower mold electrode and an upper mold electrode having a recessed part, and is pressed, and high frequency waves are applied between both electrodes to form a hard synthetic resin substrate and foam. To manufacture a molding for a vehicle that does not require end treatment or secondary processing by integrating a member and a resin skin, and is rich in cushioning properties.

[Effect]

According to the present invention, the resin skin and the outer peripheral side and end side of the foam member fit into the side wall of the recessed part of the upper electrode, so that roundness is imparted.
Furthermore, by increasing the foaming ratio of the foamed member, the cushioning properties will be enhanced.

〔Example〕

1 and 2 are a side view and a sectional view showing an example of a molding manufactured by the method for manufacturing a molding for a vehicle according to the present invention, in which the outer periphery and end side of the resin skin 12 covering the figure are made of hard synthetic resin. It is joined to the substrate 11 by welding. A decorative pattern 13 is formed on the surface of the resin skin 12 by printing, hot stamping, or the like. In addition,
The hard synthetic resin substrate 11 is made of, for example, hard vinyl chloride.

Made of EVA, ABS, etc., the foaming ratio of the foam member is 3~3
It is set as large as about 5 times. Further, the skin 12 is made of soft vinyl chloride or the like. In this case, since the foamed member 11 is not formed by extrusion molding as in the prior art, it has a rich cushioning property, and the molding can be made to have an excellent feel.

Next, a method of manufacturing such a molding for a vehicle will be described below with reference to FIGS. 3 to 5.

In FIGS. 3 to 5, 20 is a lower mold electrode, on the surface of which an insulating layer 21 of fluorocarbon resin or the like is integrated, and an upper mold electrode 22 is opposed to the lower mold electrode 20.

A recess 23 having almost the same shape as the outer shape P of the vehicle molding shown in FIG. 2 is formed on the lower surface of the upper electrode 22, and the depth N of the bottom surface 24 of this recess 23 is equal to
The outer edge 24 of the recess 23 has a sharp shape protruding toward the lower electrode 20.

A hard synthetic resin substrate 10 is placed on the lower mold electrode 20. Foamed member 1
12. By placing the overlapping materials of the skin 12 on top of each other and pressing the upper electrode 22 on top of it, compression can be achieved at the outer edge 25. At this time, both electrodes 20.
By applying a high frequency to 22, the material 11 is compressed and deformed, and its outer periphery and end conform to the side wall 25 of the recess 23, thereby giving the outer periphery and end a roundness corresponding to the side wall 25. In addition, since the depth N is set large, the central part of the skin 12 is pressed. In the present invention, the foamed member 11 is 11a, 1 as shown in FIG.
1b, or the width of this foamed member may be set in advance to the optimal width for forming the molding, and the outer skin 12 may be formed into the same shape as the molding by vacuum forming. It may also be shaped.

〔Effect of the invention〕

As explained above, according to the present invention, a foamed member is formed using a hard synthetic resin substrate and a resin skin between an upper mold electrode and a lower mold electrode, which have a concave portion having approximately the same shape as the outer shape of a 1,1 molding for a vehicle. Since the product was manufactured by increasing the high frequency between both electrodes while pressing the sandwiched material, the end of the molding can be shaped to have a rounded shape that corresponds to the side wall of the recess of the upper mold electrode, making it easy to process the end. Processes and secondary processing can be made unnecessary, and moreover, it is possible to provide cushioning properties to the molding.

[Brief explanation of the drawing]

1 and 2 are a side view and a sectional view showing an example of a molding manufactured by the method of the present invention, and FIGS. 3 to 5
FIG. 6 is a sectional view showing another embodiment of the method for manufacturing a molding for a vehicle according to the present invention; FIG.
8 are a perspective view and a sectional view showing an example of a conventional method of manufacturing a molding for a vehicle. 10...Synthetic resin substrate, 11...Foamed member, 12.
...Resin skin, 13.. Decorative pattern, 20.. Lower mold electrode, 22.. Upper mold electrode, 23.. Recessed portion. Agent Patent Attorney Jun Miyazono - Procedural Amendment (December 2, 1982, Name of Invention Method for Manufacturing Vehicle Molding 3, Relationship with the Amendment Case Patent Applicant (Seigo Yooki Kanen) International Patent Office

Claims (1)

[Claims] A lower mold electrode, and an upper mold electrode having a concave portion having substantially the same shape as the outer shape of the molding for a vehicle to be molded on the opposite surface side of the lower mold electrode, and between the lower mold electrode and the upper mold electrode, A method for producing a molding for a vehicle, characterized in that a foamed member is sandwiched between a hard synthetic resin substrate and a resin skin, and the outer edges are welded by applying high frequency waves between both electrodes while pressing.