Metal working – Means to assemble or disassemble – Overedge assembling means
Reexamination Certificate
2002-03-21
2003-04-15
Wilson, Lee (Department: 3723)
Metal working
Means to assemble or disassemble
Overedge assembling means
C029S251000, C029S243500, C269S060000
Reexamination Certificate
active
06546609
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a riveting apparatus, and in particular to a riveting apparatus having automatic feeding and automatic withdrawal of a workpiece.
2. Related Art
In numerous fields of manufacturing, riveting is widely used to combine parts. Most contemporary riveting processes are merely semi-automatic. That is, a workpiece is placed on a riveting apparatus. The workpiece is manually pushed to a riveting position. After completion of riveting, the workpiece is manually withdrawn from the apparatus. This process is not only unduly slow, but also prone to cause accidental injury to an operator's hands and arms.
In order to increase productivity, fully automatic riveting apparatuses have been developed. Such apparatuses can perform feeding and withdrawal automatically. However, such apparatuses typically have a complicated structure and occupy a large space. Moreover, the apparatus is relatively expensive and consumes much energy, thereby inflating production costs.
Thus, a riveting apparatus which overcomes the abovementioned problems is desired.
BRIEF SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a riveting apparatus which can complete automatic feeding and automatic withdrawal readily and securely.
Another object of the present invention is to provide a riveting apparatus which has a simple structure.
A further object of the present invention is to provide a riveting apparatus which prevents operators from being accidentally injured.
To achieve the above-mentioned objects, an automatic riveting apparatus comprises a base, a feeding device and a riveting device. The base has a U-shaped support frame. A pair of photoelectric relays extends upwardly from the base. The feeding device comprises two parallel sliding rails, a lower die plate for supporting a workpiece, and a feed cylinder driving the lower die plate to slide along the rails. The riveting device has an upper cylinder and a riveting head. In operation, the feed cylinder is started up to drive the lower die plate together with the workpiece to a riveting position. The lower die plate touches a photoelectric contact point to actuate the upper cylinder. A piston rod of the upper cylinder drives the riveting head downwardly to rivet the workpiece. Then, the piston rod moves back up, and the lower die plate returns to its original position.
REFERENCES:
patent: 5249902 (1993-10-01), Stankiewicz
patent: 5291644 (1994-03-01), Musil
patent: 5329691 (1994-07-01), Roberts et al.
patent: 5778505 (1998-07-01), Mangus et al.
patent: 6408526 (2002-06-01), Montesanti et al.
He YaQiang
Lee Sheng Ching
Meng ZhaoLai
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Wilson Lee
LandOfFree
Automatic riveting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic riveting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic riveting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3083692