Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1995-04-17
1996-09-24
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
15624412, 15624427, 264 405, 26417124, 26417720, 425113, B29C 4702
Patent
active
055588280
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method of mounting a trim member on a flange of a panel, such as a door panel or a panel forming a wheel arch section, for a vehicle.
BACKGROUND OF THE INVENTION
Conventionally, when a panel is constructed as a door panel 1' for a vehicle, as shown in FIG. 8, a first flange 3' formed on the upper edge of an inner panel 2' and a second flange 5' formed on the upper edge of an outer panel 4' are joined by spot welding 7'. Then, as shown in FIGS. 9(A) and 9(B), a trim member (called weatherstrip, molding or welt) 11' is mounted on the edges (upper ends) of the joined first and second flanges 3' and 5' as the latter flanges 3' and 5' are inserted into an insertion groove formed on the trim member 11'.
Such a trim member 11' is disclosed in Japanese Laid-Open Patent Publication No. 2-68240, for example.
When the first flange 3' of the inner panel 2' is joined to the second flange 5' of the outer panel 4', the joined flanges 3' and 5' may sometimes be joined with their position shifted in a vertical direction, as shown in FIG. 8, or the joined flanges 3' and 5' may sometimes be joined with their upper ends partly opened, as shown in FIG. 10.
When the first and the second flanges 3' and 5' are joined with their position shifted in a vertical direction as shown in FIG. 8, in the mounting position shown in FIG. 9(B) where the upper ends of the joined flanges 3' and 5' are inserted into the trim member 11', a distance H' required between a reference position of the door panel 1', such as a center P' of a through hole 6 formed through the outer panel 4', and the upper edge of the trim member 11' is increased by the amount L' corresponding to the above-noted shift of position. As a result, there arise problems that the trim member 11' is mounted obliquely relative to the upper edge of the joined flanges 3' and 5', or that the trim member 11' interferes with other parts assembled therearound, such as a door glass.
When the flanges 3' and 5' are joined with the upper ends partly opened, as shown in FIGS. 10 and 11, it is difficult to insert the upper ends of the flanges 3' and 5' into the trim member 11', and additionally, the insertion groove of the trim member 11' remains open, thus impairing appearance of the mounted trim member 11'.
In case of a panel 101' forming a wheel arch section for a vehicle, as shown in FIGS. 12 and 13(A) to 13(C), a flange 103' formed by bending the panel 101' along the wheel arch section is inserted into an insertion groove formed on a trim member 111'. In this case, the distance from the bend to the edge of the flange 103' tends to vary to be slightly larger or smaller than a normal distance S, or the bending angle tends to vary to be larger or smaller than a normal angle .theta.. As a result, the trim member 111' cannot be mounted in a desired condition, and appearance of the mounted trim member 111' is impaired.
DISCLOSURE OF THE INVENTION
In view of the above-noted problems, it is an object of the present invention to provide a method of mounting a trim member on a flange of a panel, in which the trim member can be mounted on the flange accurately with a desired outer shape.
The method of mounting a trim member on a flange of a panel according to the invention comprises the steps of preparing an extrusion molding die having a supply passage for supplying a molding material for a trim member, an extrusion port communicating with the supply passage and an insertion slit communicating with and extending laterally from the extrusion port for insertion of a flange of a panel, inserting the flange into the extrusion port through the insertion slit, thereby defining between the extrusion port and the flange a molding space which corresponds to the trim member, extruding the molding material supplied through the material supply passage forwardly of the extrusion port through the molding space, and providing continuous relative movement of the molding die and the flange, while adjusting the amount of insertion of the flange into the extr
REFERENCES:
patent: 3491176 (1970-01-01), Wahlstrom
patent: 4519962 (1985-05-01), Schlienkamp
patent: 4859391 (1989-08-01), Jackson
patent: 5362428 (1994-11-01), Tsujino et al.
patent: 5385703 (1995-01-01), Shanok et al.
Niwa Takeaki
Yada Yukihiko
Thurlow Jeffery R.
Tokai Kogyo Kabushiki Kaisha
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