Ultrasonic Blade Design for Scoring Double Angle Groove And Products Therefrom

a technology of ultrasonic blades and grooves, applied in the direction of manufacturing tools, pedestrian/occupant safety arrangements, vehicular safety arrangements, etc., can solve the problems of affecting the work environment, affecting the quality of work, so as to prevent the front side of the skin from being readout at a reasonable high rate of speed, the effect of preventing the side of the groove from slipping

Inactive Publication Date: 2007-05-17
COLLINS & AIKMAN PROD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017] It is therefore an object of the present invention to provide a knife-blade having a double angle design which allows for the removal of sufficient material from the tear seam to prevent healing of the sides of the groove back together.
[0018] It is a further object of the present invention to provide a double angle knife-blade which provides an invisible tear seam by removing a portion of the skin material at an angle that prevents healing while leaving sufficient material remaining at the base of the groove or tear seam such that readout on the front side of the skin is prevented.
[0019] It is a further object of the present invention to provide a knife blade design which can be used on both freshly molded as well as aged shells and allow scoring at a reasonably high rate of speed.

Problems solved by technology

Additionally, some higher powered laser weakening systems may cause degradation of the skin surface where it has been thinned or weakened, resulting in a tear seam that remains tacky.
A further issue with these systems is the smoke produced, making the work area quite unpleasant.

Method used

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  • Ultrasonic Blade Design for Scoring Double Angle Groove And Products Therefrom
  • Ultrasonic Blade Design for Scoring Double Angle Groove And Products Therefrom

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Embodiment Construction

[0023]FIG. 1 illustrates a side view of the preferred ultrasonic blade that can be used in accordance with the present invention. However, it should be appreciated that in broad context, any blade that operates to provide the V-shaped groove described herein is contemplated.

[0024] With attention directed to FIG. 2, as illustrated therein the blade contains a double angle V-shaped configuration. Shown at 10 is the first angle cutting surface A which angle is less than the angle of cutting surface B which is shown generally at 12. In the context of the present invention, angle A is preferably between 5-30 degrees and angle B is between 75-150 degrees. In addition it should be understood that the present invention contemplates all values therebetween in one (1) degree increments. More preferred ranges therefore include angle A of 10-20 degrees and angle B of 90-130 degrees. In a most preferred embodiment, angle A is about 15 degrees and angle B is about 110 degrees. Attention is direc...

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Abstract

The present invention relates to the formation of a double angle V-groove in the backside of plastic shells to provide a preweakened section for a vehicle application. The double angle V-groove may be located at the airbag deployment opening of a vehicle.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional of U.S. application Ser. No. 10 / 664,829, filed Sep. 17, 2003, which claims the benefit of the filing date of U.S. Provisional Patent Application Ser. No. 60 / 411,458, filed Sep. 17, 2002, the teachings of which are incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention relates to a method for scoring double-angle weakening grooves in skin material and products produced therefrom. The invention has particular utility in the field of automotive applications, specifically, the backside of skin sections covering airbag deployment systems. BACKGROUND OF THE INVENTION [0003] A common type of interior trim panel or cover used to cover and hide the air bag in a motor vehicle may comprise a thin elastic plastic outer skin having a non-glaring grained outer surface, a rigid retainer or substrate and an intermediate layer of soft plastic foam between the skin and substrate. In some case...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B29C59/02B29C59/00B60RB60R21/16B60R21/2165
CPCB29C59/007B29L2031/3008B60R21/2165
Inventor LELAND, RICHARD L.FUSSELL, GARY
Owner COLLINS & AIKMAN PROD CO
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